TChilkatZip Delphi ActiveX Reference Documentation

TChilkatZip

Current Version: 9.5.0.73

Zip compression component.

Importing the Chilkat ActiveX into Delphi

Important: When upgrading to a new version of Chilkat, make sure to re-imported ActiveX DLL into Delphi to regenerate the files described below.

Two things are required to use an ActiveX in Delphi:

  1. The ActiveX DLL needs to be registered via regsvr32 on the system where the Delphi application runs. See How To Register ActiveX DLLs for detailed information.
  2. See also: ActiveX Registration Tutorial
  3. The ActiveX component needs to be "imported". Use the Delphi Import Component Wizard to import the Chilkat type library. This creates the following files: Chilkat_v9_5_0_TLB.pas and Chilkat_v9_5_0_TLB.dcr. The Chilkat_v9_5_0_TLB.pas should be added to your project.

To import the Chilkat type library, do the following:

  1. In the Delphi RAD Studio, select the menu item "Component" --> "Import a Type Library".
  2. Find "Chilkat ActiveX v9.5.0" in the list and select it. This will only appear in the list if the ChilkatAx-9.5.0-win32.dll (or ChilkatAx-9.5.0-x64.dll) has been registered w/ regsvr32.
  3. Check the "Generate Component Wrappers" checkbox.
  4. Select a directory where the unit files (.pas and .dcr) should be generated.
  5. Select "Create Unit" and then "Finish".
  6. Add the .pas to your Delphi project.

To use a Chilkat ActiveX object in your Delphi code, add "Chilkat_v9_5_0_TLB" to the "uses" statement. For example:

uses
  Winapi.Windows, Winapi.Messages, System.SysUtils, System.Variants, System.Classes, Vcl.Graphics,
  Vcl.Controls, Vcl.Forms, Vcl.Dialogs, Vcl.StdCtrls, Chilkat_v9_5_0_TLB;

Object Creation

var
obj: TChilkatZip;
...
begin
obj := TChilkatZip.Create(Self);
...
// When finished, free the object instance.
obj.Free();

Properties

AbortCurrent
property AbortCurrent: Integer
Introduced in version 9.5.0.58

When set to 1, causes the currently running method to abort. Methods that always finish quickly (i.e.have no length file operations or network communications) are not affected. If no method is running, then this property is automatically reset to 0 when the next method is called. When the abort occurs, this property is reset to 0. Both synchronous and asynchronous method calls can be aborted. (A synchronous method call could be aborted by setting this property from a separate thread.)

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AppendFromDir
property AppendFromDir: WideString

When files are added to a Zip archive, they are appended from this directory. For example, to add all the files under c:/abc/123/myAppDir, this property could be set to "c:/abc/123", and "myAppDir/*" would be passed to AppendFiles. The path that is saved in the .zip would be "myAppDir/". (The value of the AppendFromDir property does not become part of the file path saved in the .zip.)

More Information and Examples
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AutoRun
property AutoRun: WideString

(Relevant only when running on a Microsoft Windows operating system.) Optional when creating Windows-based self-extracting EXEs. This is the name of an executable contained within the to-be-created EXE that will automatically be run after extraction. (This is typically something like "setup.exe")

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AutoRunParams
property AutoRunParams: WideString

(Relevant only when running on a Microsoft Windows operating system.) Command line parameters that get passed to the AutoRun executable.

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AutoTemp
property AutoTemp: Integer

(Relevant only when running on a Microsoft Windows operating system.) This option applies to creating Windows-based self-extracting EXEs. If 1, the to-be-created EXE will automatically select and create a temporary directory for unzipping. This property is often used in conjunction with the AutoRun property to create a self-extracting EXE that automatically unzips to a temp directory and runs a setup.exe without interaction with the user.

Note: To create a self-extracting EXE with no user-interaction, set the following properties to these values:

ExeSilentProgress = 0
ExeNoInterface = 1
ExeFinishNotifier = 0

The default AutoTemp value is 0.

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CaseSensitive
property CaseSensitive: Integer

If 1 then all methods that get or search for zip entries by name will use case-sensitive filename matching. If 0 then filename matching will be case insensitive. Methods affected by this property include GetEntryByName, UnzipMatching, FirstMatchingEntry, etc.

The default value is 0.

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ClearArchiveAttribute
property ClearArchiveAttribute: Integer

Set this to 1 to clear the FILE_ATTRIBUTE_ARCHIVE file attribute of each file during a zipping operation.

The default value is 0.

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ClearReadOnlyAttr
property ClearReadOnlyAttr: Integer

If 1, the read-only attribute is automatically cleared when unzipping. The default value of this property is 0, which leaves the read-only attribute unchanged when unzipping.

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Comment
property Comment: WideString

The global Zip file comment.

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DebugLogFilePath
property DebugLogFilePath: WideString

If set to a file path, causes each Chilkat method or property call to automatically append it's LastErrorText to the specified log file. The information is appended such that if a hang or crash occurs, it is possible to see the context in which the problem occurred, as well as a history of all Chilkat calls up to the point of the problem. The VerboseLogging property can be set to provide more detailed information.

This property is typically used for debugging the rare cases where a Chilkat method call hangs or generates an exception that halts program execution (i.e. crashes). A hang or crash should generally never happen. The typical causes of a hang are:

  1. a timeout related property was set to 0 to explicitly indicate that an infinite timeout is desired,
  2. the hang is actually a hang within an event callback (i.e. it is a hang within the application code), or
  3. there is an internal problem (bug) in the Chilkat code that causes the hang.

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DecryptPassword
property DecryptPassword: WideString

When opening a password-protected or AES encrypted Zip, this is the password to be used for decryption. Encrypted Zips may be opened without setting a password, but the contents cannot be unzipped without setting this password.

Note:The SetPassword method has the effect of setting both this property as well as the EncryptPassword property. The SetPassword method should no longer be used. It has been replaced by the DecryptPassword and EncryptPassword properties to make it possible to open an encrypted zip and re-write it with a new password.

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DiscardPaths
property DiscardPaths: Integer

If 1, discards all file path information when zipping. The default value is 0.

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Encryption
property Encryption: Integer

Indicate whether the Zip is to be strong encrypted or not. Valid values are 0 (not encrypted) or 4 (AES encrypted). When this property is set to the value 4, WinZip AES compatible encrypted zip archives are produced.

Note: Prior to Chilkat v9.4.1, other possible values for this property were: 1 (blowfish), 2 (twofish), and 3 (rijndael). These settings originally provided a way to produce strong encrypted zips prior to when the AES encrypted Zip standard existed. Using these legacy values (1, 2, or 3) produced encrypted zips that only applications using Chilkat could read. Chilkat no longer supports these custom modes of encryption. If using an older version of Chilkat with one of these deprecated encryption modes, make sure to decrypt using the old Chilkat version and re-encrypt using mode 4 (WinZip compatible AES encryption) prior to updating to the new Chilkat version.

Important:The Encryption and PasswordProtect properties are mutually exclusive. PasswordProtect corresponds to the older Zip 2.0 encryption, commonly referred to as a "password-protected" zip. If the PasswordProtect is set to 1, the Encryption property should be set to 0. If the Encryption property is set to a non-zero value, then PasswordProtect should be set to 0. A zip cannot be both password-protected and strong-encrypted.

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EncryptKeyLength
property EncryptKeyLength: Integer

The encryption key length if AES, Blowfish, Twofish, or WinZip-compatible AES encryption is used. This value must be 128, 192, or 256. The default value is 128.

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EncryptPassword
property EncryptPassword: WideString

The password used when writing a password-protected or strong-encrytped Zip.

Note:The SetPassword method has the effect of setting both this property as well as the DecryptPassword property. The SetPassword method should no longer be used. It has been replaced by the DecryptPassword and EncryptPassword properties to make it possible to open an encrypted zip and re-write it with a new password.

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ExeDefaultDir
property ExeDefaultDir: WideString

(Relevant only when running on a Microsoft Windows operating system.) Specifies the default unzip directory path to appear in the user-interface dialog box when the Windows-based self-extracting EXE is run.

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ExeFinishNotifier
property ExeFinishNotifier: Integer

(Relevant only when running on a Microsoft Windows operating system.) If set to 1, a "Finished" dialog box is displayed when the self-extracting EXE is finished extracting. The caption, title, and button text of the finish notifier dialog may be customized by calling SetExeConfigParam. The default value is 0.

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ExeIconFile
property ExeIconFile: WideString

(Relevant only when running on a Microsoft Windows operating system.) Applies to creating self-extracting EXEs. This property can be set to a pre-existing icon filename (.ico) that will be embedded within the to-be-created EXE and set as its default icon.

Note: This property is only possible for 32-bit applications. (Meaning that the application that is creating the self-extracting EXE must be a 32-bit application if an ExeIconFile is to be used.)

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ExeNoInterface
property ExeNoInterface: Integer

(Relevant only when running on a Microsoft Windows operating system.) Applies to creating Windows-based self-extracting EXEs. When set to 1, the to-be-created EXE will run without a user-interface. The default value is 0.

Note: The ExeSilentProgress property needs to be set to 1 for the extract to be truly silent.

Important: If the AutoTemp property = 1 and there is no AutoRun EXE, and there is no ExeUnzipDir set, then the self-extracting EXE will always display a dialog to get the unzip directory. The reason is that it makes no sense to silently unzip to an auto-selected (and unknown) temp directory without anything happening afterwards.

Important: If the self-extracting EXE is encrypted, a password dialog will be displayed. The password dialog may be suppressed if the password is provided on the command line via the -pwd command-line option.

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ExeSilentProgress
property ExeSilentProgress: Integer

(Relevant only when running on a Microsoft Windows operating system.) Determines whether a progress dialog is displayed when the self-extracting EXE is run. If ExeNoInterface = 0 (i.e. there is a main dialog with the ability to select the unzip directory), then the progress dialog is (by default) shown as a progress bar within the main dialog -- and this property has no effect. If ExeNoInterface = 1, then a progress-only dialog is displayed if ExeSilentProgress = 0. The default value of ExeSilentProgress is 1.

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ExeTitle
property ExeTitle: WideString

(Relevant only when running on a Microsoft Windows operating system.) Applies to creating Windows-based self-extracting EXEs. Sets the title of the main user-interface dialog that appears when the self-extracting EXE runs.

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ExeUnzipCaption
property ExeUnzipCaption: WideString

(Relevant only when running on a Microsoft Windows operating system.) Applies to creating MS Windows-based self-extracting EXEs. Sets the unzipping caption of the main user-interface dialog that appears when the self-extracting EXE runs.

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ExeUnzipDir
property ExeUnzipDir: WideString

(Relevant only when running on a Microsoft Windows operating system.) Applies to creating MS Windows self-extracting EXEs. Stores a pre-defined unzip directory within the self-extracting EXE so that it automatically unzips to this directory without user-intervention.

Environment variables may be included if surrounded by percent characters. For example: %TEMP%. Environment variables are expanded (i.e. resolved) when the self-extracting EXE runs.

Note: To create a self-extracting EXE with no user-interaction, set the following properties to these values:

ExeSilentProgress = 0
ExeNoInterface = 1
ExeFinishNotifier = 0

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ExeWaitForSetup
property ExeWaitForSetup: Integer

(Relevant only when running on a Microsoft Windows operating system.) If 1, the self-extracting EXE will wait for the AutoRun EXE to complete before it exits. If 0, the self-extracting EXE dialog (or process if running silently with no user-interface), is allowed to exit prior to the completion of the AutoRun EXE. The default value is 1.

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ExeXmlConfig
property ExeXmlConfig: WideString

(Relevant only when running on a Microsoft Windows operating system.) Allows for an XML config document to be used to specify all possible options for self-extracting EXEs. This property is a string containing the XML config document.

The XML should have this format:

<SfxConfig>
	<ErrPwdTitle>Title for incorrect password dialog</ErrPwdTitle>
	<ErrPwdCaption>Caption for incorrect password dialog</ErrPwdCaption>
	<FinOkBtn>Text on finish notifier button</FinOkBtn>
	<PwdOkBtn>Text on password challenge dialog's "OK" button.</PwdOkBtn>
	<PwdCancelBtn>Text on password challenge dialog's Cancel button.</PwdCancelBtn>
	<ErrInvalidPassword>Incorrect password error message.</ErrInvalidPassword>
	<MainUnzipBtn>Text on main dialog's unzip button</MainUnzipBtn>
	<MainCloseBtn>Text on main dialog's quit/exit button</MainCloseBtn>
	<MainBrowseBtn>Text on main dialog's browse-for-directory button.</MainBrowseBtn>
	<MainUnzipLabel>Caption displayed in main dialog.</MainUnzipLabel>
	<AutoTemp>"1|0 (Maps to the AutoTemp property)"</AutoTemp>
	<Cleanup>"1|0 (Deletes extracted files after the SetupExe is run.)"</Cleanup>
	<Debug>"1|0  (If 1, the EXE will not extract any files.)"</Debug>
	<Verbose>"1|0 (If 1, then verbose information is sent to the log.)"</Verbose>
	<ShowFin>"1|0" Maps to ExeFinishNotifier property.</ShowFin>
	<ShowMain>"1|0" Maps to ExeNoInterface property.</ShowMain>
	<ShowProgress>"1|0" Maps to ExeSilentProgress property.</ShowProgress>
	<WaitForSetup>"1|0" Maps to ExeWaitForSetup property.</WaitForSetup>
	<Encryption>"1|0"  1=Yes, 0=No</Encryption>
	<KeyLength>128|192|256</KeyLength>
	<SetupExe>EXE to run after extracting. (Maps to AutoRun property)</SetupExe>
	<UnzipDir>Pre-defined unzip directory. (Maps to ExeUnzipDir property)>
	<DefaultDir>Default unzip directory to appear in the main dialog. 
                                                (Maps to ExeDefaultDir property)</DefaultDir>
	<IconFile>Icon file to be used (Maps to ExeIconFile property)</IconFile>
	<Url>Maps to ExeSourceUrl property.</Url>
	<MainTitle>Maps to ExeTitle property.</MainTitle>
	<MainCaption>Maps to ExeUnzipCaption property.</MainCaption>
	<FinTitle>Title for the finish notifier dialog.</FinTitle>
	<FinCaption>Caption for the finish notifier dialog.</FinTitle>
	<ProgressTitle>Title for the progress dialog.</ProgressTitle>
	<ProgressCaption>Caption for the progress dialog.</ProgressCaption>
	<PwTitle>Title for the password challenge dialog.</PwTitle>
	<PwCaption>Caption for the password challenge dialog.</PwCaption>
</SfxConfig>

A self-extracting EXE can be run from the command line with the "-log {logFilePath}" option to create a log with information for debugging.

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FileCount
property FileCount: Integer readonly

The number of files (excluding directories) contained within the Zip.

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FileName
property FileName: WideString

The path (absolute or relative) of the Zip archive. This is the path of the file that is created or overwritten when the zip is saved.

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HasZipFormatErrors
property HasZipFormatErrors: Integer readonly

1 if the opened zip contained file format errors (that were not severe enough to prevent the zip from being opened and parsed).

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HeartbeatMs
property HeartbeatMs: Integer

The number of milliseconds between each AbortCheck event callback. The AbortCheck callback allows an application to abort any method call prior to completion. If HeartbeatMs is 0 (the default), no AbortCheck event callbacks will fire.

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IgnoreAccessDenied
property IgnoreAccessDenied: Integer

If 1, then files that cannot be read due to "access denied" (i.e. a file permission error) will be ignored and the call to WriteZip, WriteZipAndClose, WriteExe, etc. will return a success status. If 0, then the "access denied" filesystem errors are not ignored and any occurrence will cause the zip writing to fail. The default value is 1.

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LastBinaryResult
property LastBinaryResult: OleVariant readonly
Introduced in version 9.5.0.52

The binary data returned by the last (binary data returning) method called. Only available if Chilkat.Global.KeepBinaryResult is set to 1. This provides a means for obtaining large varbinary results in the SQL Server environment (where limitations exist in getting large amounts of data returned by method calls, but where temp tables can be used for binary properties).

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LastErrorHtml
property LastErrorHtml: WideString readonly

Provides information in HTML format about the last method/property called. If a method call returns a value indicating failure, or behaves unexpectedly, examine this property to get more information.

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LastErrorText
property LastErrorText: WideString readonly

Provides information in plain-text format about the last method/property called. If a method call returns a value indicating failure, or behaves unexpectedly, examine this property to get more information.

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LastErrorXml
property LastErrorXml: WideString readonly

Provides information in XML format about the last method/property called. If a method call returns a value indicating failure, or behaves unexpectedly, examine this property to get more information.

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LastMethodSuccess
property LastMethodSuccess: Integer
Introduced in version 9.5.0.52

Indicate whether the last method call succeeded or failed. A value of 1 indicates success, a value of 0 indicates failure. This property is automatically set for method calls. It is not modified by property accesses. The property is automatically set to indicate success for the following types of method calls:

  • Any method that returns a string.
  • Any method returning a Chilkat object, binary bytes, or a date/time.
  • Any method returning a standard boolean status value where success = 1 and failure = 0.
  • Any method returning an integer where failure is defined by a return value less than zero.

Note: Methods that do not fit the above requirements will always set this property equal to 1. For example, a method that returns no value (such as a "void" in C++) will technically always succeed.

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LastStringResult
property LastStringResult: WideString readonly
Introduced in version 9.5.0.52

The string return value of the last (string returning) method called. Only available if Chilkat.Global.KeepStringResult is set to 1. This provides a means for obtaining large string results in the SQL Server environment (where limitations exist in getting long strings returned by method calls, but where temp tables can be used for string properties).

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LastStringResultLen
property LastStringResultLen: Integer readonly
Introduced in version 9.5.0.53

The length, in characters, of the string contained in the LastStringResult property.

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NumEntries
property NumEntries: Integer readonly

The number of entries in the Zip, including both files and directories.

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OemCodePage
property OemCodePage: Integer

Sets the OEM code page to be used for Unicode filenames. This property defaults to the OEM code page of the computer.

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OverwriteExisting
property OverwriteExisting: Integer

Determines whether existing files are overwritten during unzipping. The default is 1, which means that already-existing files will be overwritten. Set this property = 0 to prevent existing files from being overwritten when unzipping.

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PasswordProtect
property PasswordProtect: Integer

1 if the Zip should be password-protected using older Zip 2.0 encryption, commonly referred to as "password-protection".

This property is set when a zip archive is opened by any of the Open* methods, such as OpenZip, OpenFromMemory, etc.

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PathPrefix
property PathPrefix: WideString

A prefix that is added to each filename when zipping. One might set the PathPrefix to "subdir/" so that files are unzipped to a specified subdirectory when unzipping.

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PercentDoneScale
property PercentDoneScale: Integer
Introduced in version 9.5.0.49

This property is only valid in programming environment and languages that allow for event callbacks.

Sets the value to be defined as 100% complete for the purpose of PercentDone event callbacks. The defaut value of 100 means that at most 100 event PercentDone callbacks will occur in a method that (1) is event enabled and (2) is such that it is possible to measure progress as a percentage completed. This property may be set to larger numbers to get more fine-grained PercentDone callbacks. For example, setting this property equal to 1000 will provide callbacks with .1 percent granularity. For example, a value of 453 would indicate 45.3% competed. This property is clamped to a minimum value of 10, and a maximum value of 100000.

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PwdProtCharset
property PwdProtCharset: WideString
Introduced in version 9.5.0.73

For older password-protected Zip archives (Zip 2.0 encryption), specifies the charset used for the binary representation of the decrypt password. The default value is "ansi". Other possible choices are cp850, cp437, or any of the code pages listed at the link below.

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TempDir
property TempDir: WideString

The temporary directory to use when unzipping files. When running in ASP or ASP.NET, the default value of TempDir is set to the directory where the .zip is being written. Set this property to override the default.

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TextFlag
property TextFlag: Integer

If set to 1, the component will set the "text flag" for each file having these filename extensions: .txt, .xml, .htm, and .html. It will also preserve the "text flag" for existing zips that are opened and rewritten. By default, this property is set to 0.

It is generally not necessary to set the text flag for a zip entry.

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VerboseLogging
property VerboseLogging: Integer

If set to 1, then the contents of LastErrorText (or LastErrorXml, or LastErrorHtml) may contain more verbose information. The default value is 0. Verbose logging should only be used for debugging. The potentially large quantity of logged information may adversely affect peformance.

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Version
property Version: WideString readonly

Version of the component/library, such as "9.5.0.63"

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Zipx
property Zipx: Integer

Starting in v9.4.1, Chilkat Zip will automatically unzip ZIPX files using any of the following compression methods: BZIP2, PPMd, LZMA, and Deflate64 ("Deflate64" is a trademark of PKWare, Inc.)

This property, however, controls whether or not a ZipX is automatically produced where the best compression algorithm for each file is automatically chosen based on file type. This property is for writing zip archives. It does not apply to when unzipping ZIPX archives, Chilkat Zip automatically handles the various compression algorithms when unzipping.

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ZipxDefaultAlg
property ZipxDefaultAlg: WideString

The default compression algorithm to be used when creating ZIPX archives. The default value is "deflate". Other possible values are "ppmd", "lzma", "bzip2" and "deflate64". When writing a ZIPX archive, if the file extension does not indicate an obvious choice for the appropriate compression algorithm, then the ZipxDefaultAlg is used.

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Methods

AddEmbedded
function AddEmbedded(exeFilename: WideString; resourceName: WideString; zipFilename: WideString): Integer;

(Relevant only when running on a Microsoft Windows operating system.) Embeds a Zip file into an EXE as a custom resource. This resource can be opened by the EXE containing it at runtime by using the OpenMyEmbedded method.

Important: In Visual Studio 2010, the linker has a property "Randomized Base Address" (Project Properties/Linker) that defaults to "YES", but the default is "NO" in Visual Studio 2008. (The property is nonexistent in Visual Studio 2005 and earlier.) This enables ASLR ( Address Space Layout Randomization) in Vista and up, and prevents the proper code injection in the executable address space. To successfully embed a .zip as a resource within an EXE, this Visual Studio property must be set to "NO".

Returns 1 for success, 0 for failure.

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AddNoCompressExtension
procedure AddNoCompressExtension(fileExtension: WideString);

Attempting to compress already-compressed data is usually a waste of CPU cycles with little or no benefit. In fact, it is possible that attempting to compress already-compressed data results in a slightly increased size. The Zip file format allows for files to be "stored" rather than compressed. This allows the file data to be streamed directly into a .zip without compression.

An instance of the Zip object has an internal list of "no compress" extensions. A filename with a "no compress" extension is "stored" rather than compressed. Additional "no compress" extensions may be added by calling this method (once per file extension). You should pass the file extension, such as ".xyz" in fileExtension.

"no compress" extensions may be removed by calling RemoveNoCompressExtension.

The default "no compress" extensions are: .zip, .gif, .jpg, .gz, .rar, .jar, .tgz, .bz2, .z, .rpm, .msi, .png

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AppendBase64
function AppendBase64(fileName: WideString; encodedCompressedData: WideString): TChilkatZipEntry;

Creates a new Zip entry and initializes it with already-compressed data that is Base64 encoded. (The ZipEntry.CopyBase64 method can be used to retrieve the compressed data in Base64 format.)

Note 1: This method only updates the zip object. To update (rewrite) a zip file, either the WriteZip or WriteZipAndClose method would need to be called.

Note 2: It is assumed that the compressed data is unencrypted deflated data. (Meaning data compressed using the "deflate" compression algorithm.)

Returns nil on failure

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AppendBd
function AppendBd(pathInZip: WideString; byteData: TChilkatBinData): TChilkatZipEntry;
Introduced in version 9.5.0.70

Appends the contents of byteData as a new entry to this zip object. The zip entry object containing the data is returned.

Returns nil on failure

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AppendCompressed
function AppendCompressed(filename: WideString; inData: OleVariant): TChilkatZipEntry;

Append memory data that is already Zip-compressed to the Zip object. The ZipEntry object containing the compressed data is returned. Note: This method appends the compressed data for a single zip entry. To load an entire in-memory .zip, call OpenFromMemory instead.

Note 1: This method only updates the zip object. To update (rewrite) a zip file, either the WriteZip or WriteZipAndClose method would need to be called.

Note 2: It is assumed that the compressed data is unencrypted deflated data. (Meaning data compressed using the "deflate" compression algorithm.)

Returns nil on failure

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AppendData
function AppendData(fileName: WideString; inData: OleVariant): TChilkatZipEntry;

Appends in-memory data as a new entry to a Zip object. The ZipEntry object containing the data is returned.

Note: This method only updates the zip object. To update (rewrite) a zip file, either the WriteZip or WriteZipAndClose method would need to be called.

Returns nil on failure

More Information and Examples
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AppendDataEncoded
function AppendDataEncoded(filename: WideString; encoding: WideString; data: WideString): TChilkatZipEntry;
Introduced in version 9.5.0.59

Appends in-memory data as a new entry to a Zip object. The filename is the filename of the entry as it will appear within the zip. The encoding is the encoding of the data, such as "base64", "hex", etc. The full list of encodings is listed at the web page linked below.

Returns the zip entry object.

Note: This method only updates the zip object. To update (rewrite) a zip file, either the WriteZip or WriteZipAndClose method would need to be called.

Returns nil on failure

More Information and Examples
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AppendFiles
function AppendFiles(filePattern: WideString; recurse: Integer): Integer;

Appends one or more files to the Zip object. The filePattern can use the "*" wildcard character for 0 or more of any characterSet recurse equal to True to recursively add all subdirectories, or False to only add files in the current directory.

Note: This method only updates the zip object. To update (rewrite) a zip file, either the WriteZip or WriteZipAndClose method would need to be called.

Returns 1 for success, 0 for failure.

More Information and Examples
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AppendFilesAsync (1)
function AppendFilesAsync(filePattern: WideString; recurse: Integer): TChilkatTask;

Creates an asynchronous task to call the AppendFiles method with the arguments provided. (Async methods are available starting in Chilkat v9.5.0.52.)

Note: Async method event callbacks happen in the background thread. Accessing and updating UI elements existing in the main thread may require special considerations.

Returns nil on failure

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AppendFilesEx
function AppendFilesEx(filePattern: WideString; recurse: Integer; saveExtraPath: Integer; archiveOnly: Integer; includeHidden: Integer; includeSystem: Integer): Integer;

Appends one or more files to the Zip object. The filePattern can use the "*" and "?" wildcard characters where "*" means 0 or more of any character and "?" means any single character. The recurse controls whether directories are recursively traversed. Set recurse equal to 1 to append files and subdirectories in the directory tree. Set recurse equal to 0 to add files only from the indicated directory.

The saveExtraPath only applies when the filePattern is an absolute path pattern, such as "C:/temp/abc/*.txt". If saveExtraPath is 1, then the absolute path will be included in the zip entry filenames as relative paths. For example, "temp/abc/xyz.txt".

The archiveOnly, includeHidden, and includeSystem flags only apply when on the Windows operating system. If archiveOnly is 1, then only files that have the archive bit set will be included in the zip. If includeHidden is 0, then hidden files are not included. If includeSystem is 0, then files having the System attribute are not included.

Note: This method does not write the zip archive. It simply adds references to the files that will be included in the .zip when the WriteZip or WriteZipAndClose methods are eventually called. Files and/or data may be added to the zip object by calling any combination of the Append* methods before finally writing the zip via one of the Write* methods.

Returns 1 for success, 0 for failure.

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AppendFilesExAsync (1)
function AppendFilesExAsync(filePattern: WideString; recurse: Integer; saveExtraPath: Integer; archiveOnly: Integer; includeHidden: Integer; includeSystem: Integer): TChilkatTask;

Creates an asynchronous task to call the AppendFilesEx method with the arguments provided. (Async methods are available starting in Chilkat v9.5.0.52.)

Note: Async method event callbacks happen in the background thread. Accessing and updating UI elements existing in the main thread may require special considerations.

Returns nil on failure

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AppendHex
function AppendHex(fileName: WideString; encodedCompressedData: WideString): TChilkatZipEntry;

Creates a new Zip entry and initializes it with already-compressed data that is hexidecimal encoded. (The ZipEntry.CopyHex method can be used to retrieve the compressed data in Hex format.)

Note 1: This method only updates the zip object. To update (rewrite) a zip file, either the WriteZip or WriteZipAndClose method would need to be called.

Note 2: It is assumed that the compressed data is unencrypted deflated data. (Meaning data compressed using the "deflate" compression algorithm.)

Returns nil on failure

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AppendMultiple
function AppendMultiple(fileSpecs: TCkStringArray; recurse: Integer): Integer;

This method is the same as calling AppendFiles multiple times - once for each file pattern in fileSpecs

Note: This method only updates the zip object. To update (rewrite) a zip file, either the WriteZip or WriteZipAndClose method would need to be called.

Returns 1 for success, 0 for failure.

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AppendMultipleAsync (1)
function AppendMultipleAsync(fileSpecs: TCkStringArray; recurse: Integer): TChilkatTask;

Creates an asynchronous task to call the AppendMultiple method with the arguments provided. (Async methods are available starting in Chilkat v9.5.0.52.)

Note: Async method event callbacks happen in the background thread. Accessing and updating UI elements existing in the main thread may require special considerations.

Returns nil on failure

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AppendNew
function AppendNew(fileName: WideString): TChilkatZipEntry;

Appends a new and empty entry to the Zip object and returns the ZipEntry object. Data can be appended to the entry by calling ZipEntry.AppendData.

Important: To append an already-existing file, call the AppendOneFileOrDir method. The AppendNew method inserts a new and empty file entry within the Zip object. The purpose of AppendNew is to either create an empty file within the Zip, or to create a new file entry which can then be filled with data by calling the entry's AppendData method.

Note: This method only updates the zip object. To update (rewrite) a zip file, either the WriteZip or WriteZipAndClose method would need to be called.

Returns nil on failure

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AppendNewDir
function AppendNewDir(dirName: WideString): TChilkatZipEntry;

Adds an entry to the zip so that when it unzips, a new directory (with no files) is created. The directory does not need to exist on the local filesystem when calling this method. The dirName is simply a string that is used as the directory path for the entry added to the zip. The zip entry object is returned.

Note: This method only updates the zip object. To update (rewrite) a zip file, either the WriteZip or WriteZipAndClose method would need to be called.

Returns nil on failure

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AppendOneFileOrDir
function AppendOneFileOrDir(fileOrDirPath: WideString; saveExtraPath: Integer): Integer;

Appends a single file or directory to the Zip object. The saveExtraPath applies when fileOrDirPath is an absolute (non-relative) path. If saveExtraPath is 1, then the absolute path is made relative and saved in the zip. For example, if the fileOrDirPath is "C:/temp/xyz/test.txt" and saveExtraPath is 1, then the path in the zip will be "./temp/xyz/test.txt". If however, fileOrDirPath contains a relative path, then saveExtraPath has no effect.

Returns 1 for success, 0 for failure.

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AppendOneFileOrDirAsync (1)
function AppendOneFileOrDirAsync(fileOrDirPath: WideString; saveExtraPath: Integer): TChilkatTask;

Creates an asynchronous task to call the AppendOneFileOrDir method with the arguments provided. (Async methods are available starting in Chilkat v9.5.0.52.)

Note: Async method event callbacks happen in the background thread. Accessing and updating UI elements existing in the main thread may require special considerations.

Returns nil on failure

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AppendString
function AppendString(internalZipFilepath: WideString; textData: WideString): TChilkatZipEntry;

Adds an in-memory string to the Zip object. The textData argument is converted to the ANSI charset before being added to the Zip. If the Zip were written to disk by calling WriteZip, and later unzipped, the entry would unzip to an ANSI text file.

Note: This method only updates the zip object. To update (rewrite) a zip file, either the WriteZip or WriteZipAndClose method would need to be called.

Returns nil on failure

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AppendString2
function AppendString2(internalZipFilepath: WideString; textData: WideString; charset: WideString): TChilkatZipEntry;

Same as AppendString, but allows the charset to be specified. The textData is converted to charset before being added to the zip. The internalZipFilepath is the path of the file that will be stored within the zip.

Note: This method only updates the zip object. To update (rewrite) a zip file, either the WriteZip or WriteZipAndClose method would need to be called.

Returns nil on failure

More Information and Examples
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AppendZip
function AppendZip(zipFileName: WideString): Integer;

Adds the contents of another existing Zip file to this Zip object.

Returns 1 for success, 0 for failure.

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CloseZip
procedure CloseZip();

Closes an open Zip file. This is identical to calling NewZip. (NewZip closes the current Zip file, if open, and initializes the Zip object to be empty. Zip files are only created when WriteZip is called.)

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DeleteEntry
function DeleteEntry(entry: TChilkatZipEntry): Integer;

Removes a Zip entry from the calling Zip object.

Returns 1 for success, 0 for failure.

More Information and Examples
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ExcludeDir
procedure ExcludeDir(dirName: WideString);

Adds a directory name to be excluded when AppendFiles is called to add an entire directory tree. All directories having a name equal to an excluded directory will not be included when AppendFiles (or AppendFileEx) is called. Multiple directories can be excluded by calling ExcludeDir multiple times. The name comparison is case-insensitive.

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Extract
function Extract(dirPath: WideString): Integer;

Unzip all the files into the specified directory. Subdirectories are automatically created as needed.

Returns 1 for success, 0 for failure.

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ExtractAsync (1)
function ExtractAsync(dirPath: WideString): TChilkatTask;

Creates an asynchronous task to call the Extract method with the arguments provided. (Async methods are available starting in Chilkat v9.5.0.52.)

Note: Async method event callbacks happen in the background thread. Accessing and updating UI elements existing in the main thread may require special considerations.

Returns nil on failure

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ExtractExe
function ExtractExe(exePath: WideString; dirPath: WideString): Integer;
Introduced in version 9.5.0.44

Extracts files from a Chilkat produced self-extracting EXE into the specified directory. Subdirectories are automatically created as needed. If the self-extracting EXE is encrypted, be sure to set the DecryptPassword property prior to calling this method.

Returns 1 for success, 0 for failure.

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ExtractExeAsync (1)
function ExtractExeAsync(exePath: WideString; dirPath: WideString): TChilkatTask;
Introduced in version 9.5.0.44

Creates an asynchronous task to call the ExtractExe method with the arguments provided. (Async methods are available starting in Chilkat v9.5.0.52.)

Note: Async method event callbacks happen in the background thread. Accessing and updating UI elements existing in the main thread may require special considerations.

Returns nil on failure

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FirstEntry
function FirstEntry(): TChilkatZipEntry;

Return the first entry in the Zip. Call ZipEntry.NextEntry to iterate over the entries in a Zip until a NULL is returned.

Returns nil on failure

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FirstMatchingEntry
function FirstMatchingEntry(pattern: WideString): TChilkatZipEntry;

Returns the first entry having a filename matching a pattern. The "*" characters matches 0 or more of any character. The full filename, including path, is used when matching against the pattern. A NULL is returned if nothing matches.

Returns nil on failure

More Information and Examples
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GetDirectoryAsXML
function GetDirectoryAsXML(): WideString;

Return the contents of the Zip file directory in an XML formatted string

Returns a zero-length WideString on failure

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GetEntryByID
function GetEntryByID(entryID: Integer): TChilkatZipEntry;

Retrieves a ZipEntry by ID. Chilkat Zip.NET automatically assigns a unique ID to each ZipEntry in the Zip. This feature makes it easy to associate an item in a UI control with a ZipEntry.

Returns nil on failure

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GetEntryByIndex
function GetEntryByIndex(index: Integer): TChilkatZipEntry;

Retrieves a ZipEntry by index. The first entry is at index 0. This will return directory entries as well as files.

Returns nil on failure

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GetEntryByName
function GetEntryByName(entryName: WideString): TChilkatZipEntry;

Returns a ZipEntry by filename. If a full or partial path is part of the filename, this must be included in the filename parameter.

Returns nil on failure

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GetExclusions
function GetExclusions(): TCkStringArray;

Returns the current collection of exclusion patterns that have been set by SetExclusions.

Returns nil on failure

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GetExeConfigParam
function GetExeConfigParam(name: WideString): WideString;

(Relevant only when running on a Microsoft Windows operating system.) Gets the value of an EXE config param as described in the ExeXmlConfig property.

Returns a zero-length WideString on failure

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InsertNew
function InsertNew(fileName: WideString; beforeIndex: Integer): TChilkatZipEntry;

Inserts a new and empty entry into the Zip object. To insert at the beginning of the Zip, beforeIndex should be 0. The ZipEntry's FileName property is initialized to fileName parameter.

Returns nil on failure

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IsNoCompressExtension
function IsNoCompressExtension(fileExtension: WideString): Integer;

Returns 1 if the fileExtension is contained in the set of "no compress" extensions, otherwise returns 0. (See the documentation for the AddNoCompressExtension method.) The fileExtension may be passed with or without the ".". For example, both ".jpg" and "jpg" are acceptable.

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IsPasswordProtected
function IsPasswordProtected(zipFilename: WideString): Integer;

Return True if a Zip file is password protected

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IsUnlocked
function IsUnlocked(): Integer;

Returns True if the class is already unlocked, otherwise returns False.

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NewZip
function NewZip(zipFilePath: WideString): Integer;

Clears and initializes the contents of the Zip object. If a Zip file was open, it is closed and all entries are removed from the object. The FileName property is set to the zipFilePath argument.

More Information and Examples
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OpenBd
function OpenBd(binData: TChilkatBinData): Integer;
Introduced in version 9.5.0.66

Open a Zip contained in binData.

When a zip is opened, the PasswordProtect and Encryption properties will be appropriately set. If the zip is password protected (i.e. uses older Zip 2.0 encrypion), then the PasswordProtect property will be set to 1. If the zip is strong encrypted, the Encryption property will be set to a value 1 through 4, where 4 indicates WinZip compatible AES encryption.

Returns 1 for success, 0 for failure.

More Information and Examples
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OpenEmbedded
function OpenEmbedded(exeFilename: WideString; resourceName: WideString): Integer;

(Relevant only when running on a Microsoft Windows operating system.) Opens a Zip embedded in an MS Windows EXE

Returns 1 for success, 0 for failure.

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OpenFromByteData
function OpenFromByteData(byteData: OleVariant): Integer;

Same as OpenFromMemory.

When a zip is opened, the PasswordProtect and Encryption properties will be appropriately set. If the zip is password protected (i.e. uses older Zip 2.0 encrypion), then the PasswordProtect property will be set to 1. If the zip is strong encrypted, the Encryption property will be set to a value 1 through 4, where 4 indicates WinZip compatible AES encryption.

Returns 1 for success, 0 for failure.

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OpenFromMemory
function OpenFromMemory(inData: OleVariant): Integer;

Open a Zip that is completely in-memory. This allows for Zip files to be opened from non-filesystem sources, such as a database.

When a zip is opened, the PasswordProtect and Encryption properties will be appropriately set. If the zip is password protected (i.e. uses older Zip 2.0 encrypion), then the PasswordProtect property will be set to 1. If the zip is strong encrypted, the Encryption property will be set to a value 1 through 4, where 4 indicates WinZip compatible AES encryption.

Returns 1 for success, 0 for failure.

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OpenMyEmbedded
function OpenMyEmbedded(resourceName: WideString): Integer;

(Relevant only when running on a Microsoft Windows operating system.) Opens a Zip embedded within the caller's MS Windows EXE.

Returns 1 for success, 0 for failure.

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OpenZip
function OpenZip(zipPath: WideString): Integer;

Opens a Zip archive. Encrypted and password-protected zips may be opened without providing the password, but their contents may not be unzipped unless the correct password is provided via the DecryptPassword proprety, or the SetPassword method.

When a zip is opened, the PasswordProtect and Encryption properties will be appropriately set. If the zip is password protected (i.e. uses older Zip 2.0 encrypion), then the PasswordProtect property will be set to 1. If the zip is strong encrypted, the Encryption property will be set to a value 1 through 4, where 4 indicates WinZip compatible AES encryption.

Returns 1 for success, 0 for failure.

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OpenZipAsync (1)
function OpenZipAsync(zipPath: WideString): TChilkatTask;

Creates an asynchronous task to call the OpenZip method with the arguments provided. (Async methods are available starting in Chilkat v9.5.0.52.)

Note: Async method event callbacks happen in the background thread. Accessing and updating UI elements existing in the main thread may require special considerations.

Returns nil on failure

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QuickAppend
function QuickAppend(ZipFileName: WideString): Integer;

Efficiently appends additional files to an existing zip archive. QuickAppend leaves all entries in the existing .zip untouched. It operates by appending new files and updating the internal "central directory" of the zip archive.

Returns 1 for success, 0 for failure.

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QuickAppendAsync (1)
function QuickAppendAsync(ZipFileName: WideString): TChilkatTask;

Creates an asynchronous task to call the QuickAppend method with the arguments provided. (Async methods are available starting in Chilkat v9.5.0.52.)

Note: Async method event callbacks happen in the background thread. Accessing and updating UI elements existing in the main thread may require special considerations.

Returns nil on failure

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RemoveEmbedded
function RemoveEmbedded(exeFilename: WideString; resourceName: WideString): Integer;

(Relevant only when running on a Microsoft Windows operating system.) Removes an embedded Zip from an MS-Windows EXE

Returns 1 for success, 0 for failure.

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RemoveNoCompressExtension
procedure RemoveNoCompressExtension(fileExtension: WideString);

Removes a file extension from the zip object's internal list of "no compress" extensions. (For more information, see AddNoCompressExtension.)

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ReplaceEmbedded
function ReplaceEmbedded(exeFilename: WideString; resourceName: WideString; zipFilename: WideString): Integer;

(Relevant only when running on a Microsoft Windows operating system.) Replace a Zip embedded in an MS-Windows EXE with another Zip file.

Returns 1 for success, 0 for failure.

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SetCompressionLevel
procedure SetCompressionLevel(level: Integer);

Sets the compression level for all file and data entries. The compression level for a mapped entry (i.e. an entry that is contained within an opened .zip, cannot be changed.) The default compression level is 6. A compression level of 0 is equivalent to no compression. The maximum compression level is 9.

The zip.SetCompressionLevel method must be called after appending the files (i.e. after the calls to AppendFile*, AppendData, or AppendOneFileOrDir).

A single call to SetCompressionLevel will set the compression level for all existing file and data entries.

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SetExclusions
procedure SetExclusions(excludePatterns: TCkStringArray);

Specify a collection of exclusion patterns to be used when adding files to a Zip. Each pattern in the collection can use the "*" wildcard character, where "*" indicates 0 or more occurrences of any character.

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SetExeConfigParam
procedure SetExeConfigParam(paramName: WideString; paramValue: WideString);

Sets a self-extractor property that is embedded in the resultant EXE created by the WriteExe or WriteExe2 methods. The paramName is one of the XML tags listed in the ExeXmlConfig property.

For example, to specify the text for the self-extractor's main dialog unzip button, paramName would be "MainUnzipBtn".

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SetPassword
procedure SetPassword(password: WideString);

Set the password for an encrypted or password-protected Zip.

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UnlockComponent
function UnlockComponent(regCode: WideString): Integer;

Unlocks the component allowing for the full functionality to be used. If a purchased unlock code is passed, there is no expiration. Any other string automatically begins a fully-functional 30-day trial the first time UnlockComponent is called.

Returns 1 for success, 0 for failure.

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Unzip
function Unzip(dirPath: WideString): Integer;

Unzips and returns the number of files unzipped, or -1 if a failure occurs. Subdirectories are automatically created during the unzipping process.

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UnzipAsync (1)
function UnzipAsync(dirPath: WideString): TChilkatTask;

Creates an asynchronous task to call the Unzip method with the arguments provided. (Async methods are available starting in Chilkat v9.5.0.52.)

Note: Async method event callbacks happen in the background thread. Accessing and updating UI elements existing in the main thread may require special considerations.

Returns nil on failure

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UnzipInto
function UnzipInto(dirPath: WideString): Integer;

Unzips and returns the number of files unzipped, or -1 if a failure occurs. All files in the Zip are unzipped into the specfied dirPath regardless of the directory path information contained in the Zip. This has the effect of collapsing all files into a single directory. If several files in the Zip have the same name, the files unzipped last will overwrite the files already unzipped.

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UnzipIntoAsync (1)
function UnzipIntoAsync(dirPath: WideString): TChilkatTask;

Creates an asynchronous task to call the UnzipInto method with the arguments provided. (Async methods are available starting in Chilkat v9.5.0.52.)

Note: Async method event callbacks happen in the background thread. Accessing and updating UI elements existing in the main thread may require special considerations.

Returns nil on failure

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UnzipMatching
function UnzipMatching(dirPath: WideString; pattern: WideString; verbose: Integer): Integer;

Same as Unzip, but only unzips files matching a pattern. If no wildcard characters ('*') are used, then only files that exactly match the pattern will be unzipped. The "*" characters matches 0 or more of any character.

More Information and Examples
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UnzipMatchingAsync (1)
function UnzipMatchingAsync(dirPath: WideString; pattern: WideString; verbose: Integer): TChilkatTask;

Creates an asynchronous task to call the UnzipMatching method with the arguments provided. (Async methods are available starting in Chilkat v9.5.0.52.)

Note: Async method event callbacks happen in the background thread. Accessing and updating UI elements existing in the main thread may require special considerations.

Returns nil on failure

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UnzipMatchingInto
function UnzipMatchingInto(dirPath: WideString; pattern: WideString; verbose: Integer): Integer;

Unzips matching files into a single directory, ignoring all path information stored in the Zip.

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UnzipMatchingIntoAsync (1)
function UnzipMatchingIntoAsync(dirPath: WideString; pattern: WideString; verbose: Integer): TChilkatTask;

Creates an asynchronous task to call the UnzipMatchingInto method with the arguments provided. (Async methods are available starting in Chilkat v9.5.0.52.)

Note: Async method event callbacks happen in the background thread. Accessing and updating UI elements existing in the main thread may require special considerations.

Returns nil on failure

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UnzipNewer
function UnzipNewer(dirPath: WideString): Integer;

Same as Unzip, but only files that don't already exist on disk, or have later file modification dates are unzipped.

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UnzipNewerAsync (1)
function UnzipNewerAsync(dirPath: WideString): TChilkatTask;

Creates an asynchronous task to call the UnzipNewer method with the arguments provided. (Async methods are available starting in Chilkat v9.5.0.52.)

Note: Async method event callbacks happen in the background thread. Accessing and updating UI elements existing in the main thread may require special considerations.

Returns nil on failure

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VerifyPassword
function VerifyPassword(): Integer;

Tests the current DecryptPassword setting against the currently opened zip. Returns 1 if the password is valid, otherwise returns 0.

More Information and Examples
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WriteBd
function WriteBd(binData: TChilkatBinData): Integer;
Introduced in version 9.5.0.66

Same as WriteZip, but instead of writing the Zip to a file, it writes to binData. Zips that are written to binData can be opened by calling OpenBd. Note: Both WriteBd and OpenBd are added in Chilkat v9.5.0.66

Returns 1 for success, 0 for failure.

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WriteBdAsync (1)
function WriteBdAsync(binData: TChilkatBinData): TChilkatTask;
Introduced in version 9.5.0.66

Creates an asynchronous task to call the WriteBd method with the arguments provided. (Async methods are available starting in Chilkat v9.5.0.52.)

Note: Async method event callbacks happen in the background thread. Accessing and updating UI elements existing in the main thread may require special considerations.

Returns nil on failure

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WriteExe
function WriteExe(exeFilename: WideString): Integer;

(Relevant only when running on a Microsoft Windows operating system.) Writes an MS-Windows self-extracting executable. There are no limitations on the total size, individual file size, or number of files that can be added to a self-extracting EXE.

If the resultant EXE will automatically accept these command-line arguments when run:

-log logFileName
Creates a log file that lists the settings embedded within the EXE and logs the errors, warnings, and other information about the self-extraction.
-unzipDir unzipDirectoryPath
Unzips to this directory path without user intervention.
-pwd password
Specifies the password for an encrypted EXE
-ap autoRunParams
Specifies the command line parameters to be passed to the AutoRun executable (embedded within the EXE).

Returns 1 for success, 0 for failure.

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WriteExeToMemory
function WriteExeToMemory(): OleVariant;

(Relevant only when running on a Microsoft Windows operating system.) Same as WriteExe, but instead of writing a file, the MS-Windows EXE is written to memory.

Returns a zero-length byte array (as an OleVariant) on failure.
An empty array will have a VarArrayHighBound of -1 meaning 0 elements.

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WriteToMemory
function WriteToMemory(): OleVariant;

Same as WriteZip, but instead of writing the Zip to a file, it writes to memory. Zips that are written to memory can also be opened from memory by calling OpenFromMemory.

Returns a zero-length byte array (as an OleVariant) on failure.
An empty array will have a VarArrayHighBound of -1 meaning 0 elements.

More Information and Examples
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WriteToMemoryAsync (1)
function WriteToMemoryAsync(): TChilkatTask;

Creates an asynchronous task to call the WriteToMemory method with the arguments provided. (Async methods are available starting in Chilkat v9.5.0.52.)

Note: Async method event callbacks happen in the background thread. Accessing and updating UI elements existing in the main thread may require special considerations.

Returns nil on failure

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WriteZip
function WriteZip(): Integer;

Saves the Zip to a file and implictly re-opens it so further operations can continue. Use WriteZipAndClose to write and close the Zip. There is no limitation on the size of files that may be contained within a .zip, the total number of files in a .zip, or the total size of a .zip. If necessary, WriteZip will use the ZIP64 file format extensions when 4GB or file count limitations of the old zip file format are exceeded.

Returns 1 for success, 0 for failure.

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WriteZipAsync (1)
function WriteZipAsync(): TChilkatTask;

Creates an asynchronous task to call the WriteZip method with the arguments provided. (Async methods are available starting in Chilkat v9.5.0.52.)

Note: Async method event callbacks happen in the background thread. Accessing and updating UI elements existing in the main thread may require special considerations.

Returns nil on failure

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WriteZipAndClose
function WriteZipAndClose(): Integer;

Saves the Zip to a file and closes it. On return, the Zip object will be in the state as if NewZip had been called. There is no limitation on the size of files that may be contained within a .zip, the total number of files in a .zip, or the total size of a .zip. If necessary, WriteZip will use the ZIP64 file format extensions when 4GB or file count limitations of the old zip file format are exceeded.

Returns 1 for success, 0 for failure.

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WriteZipAndCloseAsync (1)
function WriteZipAndCloseAsync(): TChilkatTask;

Creates an asynchronous task to call the WriteZipAndClose method with the arguments provided. (Async methods are available starting in Chilkat v9.5.0.52.)

Note: Async method event callbacks happen in the background thread. Accessing and updating UI elements existing in the main thread may require special considerations.

Returns nil on failure

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Events

AbortCheck
procedure AbortCheck(ASender: TObject; out abort: Integer);

Provides the opportunity for a method call to be aborted. The AbortCheck event is fired periodically based on the value of the HeartbeatMs property. If HeartbeatMs is 0, then no AbortCheck events will fire. As an example, to fire 5 AbortCheck events per second, set the HeartbeatMs property equal to 200.

Delphi ActiveX Event callback implementation:

procedure TForm1.zipENTRY_NAME(ASender: TObject;  out abort: Integer);
begin
    // Application code goes here...
end;


procedure TForm1.Button1Click(Sender: TObject);
var
  zip: TChilkatZip;

begin
  zip := TChilkatZip.Create(Self);
  zip.OnAbortCheck := zipAbortCheck;
  // ...
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AddFilesBegin
procedure AddFilesBegin(ASender: TObject; );

Fired at the start of the AppendFiles or AppendFIlesEx method.

Delphi ActiveX Event callback implementation:

procedure TForm1.zipENTRY_NAME(ASender: TObject;  );
begin
    // Application code goes here...
end;


procedure TForm1.Button1Click(Sender: TObject);
var
  zip: TChilkatZip;

begin
  zip := TChilkatZip.Create(Self);
  zip.OnAddFilesBegin := zipAddFilesBegin;
  // ...
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AddFilesEnd
procedure AddFilesEnd(ASender: TObject; );

Fired at the end of the AppendFiles or AppendFIlesEx method.

Delphi ActiveX Event callback implementation:

procedure TForm1.zipENTRY_NAME(ASender: TObject;  );
begin
    // Application code goes here...
end;


procedure TForm1.Button1Click(Sender: TObject);
var
  zip: TChilkatZip;

begin
  zip := TChilkatZip.Create(Self);
  zip.OnAddFilesEnd := zipAddFilesEnd;
  // ...
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DirToBeAdded
procedure DirToBeAdded(ASender: TObject; const path: WideString; out skip: Integer);

This event fires during the AppendFiles and AppendFilesEx method calls. It is called just before each directory is to be added. The skip output-only argument may be set to 1 to prevent the directory and everything it contains from being added.

Delphi ActiveX Event callback implementation:

procedure TForm1.zipENTRY_NAME(ASender: TObject;  const path: WideString; out skip: Integer);
begin
    // Application code goes here...
end;


procedure TForm1.Button1Click(Sender: TObject);
var
  zip: TChilkatZip;

begin
  zip := TChilkatZip.Create(Self);
  zip.OnDirToBeAdded := zipDirToBeAdded;
  // ...
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FileAdded
procedure FileAdded(ASender: TObject; const path: WideString; fileSize: Integer; out abort: Integer);

This event fires during the AppendFiles and AppendFilesEx method calls. It is called just after each file is added. The abort output-only argument may be set to 1 to abort the method call.

Delphi ActiveX Event callback implementation:

procedure TForm1.zipENTRY_NAME(ASender: TObject;  const path: WideString; fileSize: Integer; out abort: Integer);
begin
    // Application code goes here...
end;


procedure TForm1.Button1Click(Sender: TObject);
var
  zip: TChilkatZip;

begin
  zip := TChilkatZip.Create(Self);
  zip.OnFileAdded := zipFileAdded;
  // ...
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FileUnzipped
procedure FileUnzipped(ASender: TObject; const path: WideString; compressedSize: Integer; fileSize: Integer; out abort: Integer);

This event fires during method calls that unzip a zip archive. It is called just after each file is unzipped. The abort output-only argument may be set to 1 to abort the method call.

Delphi ActiveX Event callback implementation:

procedure TForm1.zipENTRY_NAME(ASender: TObject;  const path: WideString; compressedSize: Integer; fileSize: Integer; out abort: Integer);
begin
    // Application code goes here...
end;


procedure TForm1.Button1Click(Sender: TObject);
var
  zip: TChilkatZip;

begin
  zip := TChilkatZip.Create(Self);
  zip.OnFileUnzipped := zipFileUnzipped;
  // ...
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FileZipped
procedure FileZipped(ASender: TObject; const path: WideString; fileSize: Integer; compressedSize: Integer; out abort: Integer);

This event fires during method calls that write a zip archive. It is called just after each file is zipped. The abort output-only argument may be set to 1 to abort the method call.

Delphi ActiveX Event callback implementation:

procedure TForm1.zipENTRY_NAME(ASender: TObject;  const path: WideString; fileSize: Integer; compressedSize: Integer; out abort: Integer);
begin
    // Application code goes here...
end;


procedure TForm1.Button1Click(Sender: TObject);
var
  zip: TChilkatZip;

begin
  zip := TChilkatZip.Create(Self);
  zip.OnFileZipped := zipFileZipped;
  // ...
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PercentDone
procedure PercentDone(ASender: TObject; pctDone: Integer; out abort: Integer);

Provides the percentage completed for any method that involves network communications or time-consuming processing (assuming it is a method where a percentage completion can be measured). This event is only fired when it is possible to know a percentage completion, and when it makes sense to express the operation as a percentage completed. The pctDone argument will have a value from 1 to 100. For operations (Chilkat method calls) that complete very quickly, the number of PercentDone callbacks will vary, but the final callback should have a value of 100. For long running operations, no more than one callback per percentage point will occur (for example: 1, 2, 3, ... 98, 99, 100).

The PercentDone callback counts as an AbortCheck event. For method calls that complete quickly such that PercentDone events fire, it may be that AbortCheck events don't fire because the opportunity to abort is already provided in the PercentDone callback. For time consuming operations, where the amount of time between PercentDone callbacks are long, AbortCheck callbacks may be used to allow for the operation to be aborted in a more responsive manner.

The abort output argument provides a means for aborting the operation. Setting it to 1 will cause the method to abort and return a failed status (or whatever return value indicates failure).

Delphi ActiveX Event callback implementation:

procedure TForm1.zipENTRY_NAME(ASender: TObject;  pctDone: Integer; out abort: Integer);
begin
    // Application code goes here...
end;


procedure TForm1.Button1Click(Sender: TObject);
var
  zip: TChilkatZip;

begin
  zip := TChilkatZip.Create(Self);
  zip.OnPercentDone := zipPercentDone;
  // ...
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ProgressInfo
procedure ProgressInfo(ASender: TObject; const name: WideString; const value: WideString);

A general name/value event that provides information about what is happening during a method call. To find out what information is available, write code to handle this event and log the name/value pairs. Most are self-explanatory.

Delphi ActiveX Event callback implementation:

procedure TForm1.zipENTRY_NAME(ASender: TObject;  const name: WideString; const value: WideString);
begin
    // Application code goes here...
end;


procedure TForm1.Button1Click(Sender: TObject);
var
  zip: TChilkatZip;

begin
  zip := TChilkatZip.Create(Self);
  zip.OnProgressInfo := zipProgressInfo;
  // ...
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SkippedForUnzip
procedure SkippedForUnzip(ASender: TObject; const path: WideString; compressedSize: Integer; fileSize: Integer; isDirectory: Integer);

This event fires during method calls that unzip a zip archive. It is called for each file that was skipped for some reason (such as for when UnzipNewer or UnzipMatching is called).

Delphi ActiveX Event callback implementation:

procedure TForm1.zipENTRY_NAME(ASender: TObject;  const path: WideString; compressedSize: Integer; fileSize: Integer; isDirectory: Integer);
begin
    // Application code goes here...
end;


procedure TForm1.Button1Click(Sender: TObject);
var
  zip: TChilkatZip;

begin
  zip := TChilkatZip.Create(Self);
  zip.OnSkippedForUnzip := zipSkippedForUnzip;
  // ...
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TaskCompleted
procedure TaskCompleted(ASender: TObject; const task: IChilkatTask);

Called in the background thread when an asynchronous task completes.

More Information and Examples

Delphi ActiveX Event callback implementation:

procedure TForm1.zipENTRY_NAME(ASender: TObject;  const task: IChilkatTask);
begin
    // Application code goes here...
end;


procedure TForm1.Button1Click(Sender: TObject);
var
  zip: TChilkatZip;

begin
  zip := TChilkatZip.Create(Self);
  zip.OnTaskCompleted := zipTaskCompleted;
  // ...
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ToBeAdded
procedure ToBeAdded(ASender: TObject; const path: WideString; fileSize: Integer; out skip: Integer);

This event fires during the AppendFiles and AppendFilesEx method calls. It is called just before each file is to be added. The skip output-only argument may be set to 1 to prevent the file from being added.

Delphi ActiveX Event callback implementation:

procedure TForm1.zipENTRY_NAME(ASender: TObject;  const path: WideString; fileSize: Integer; out skip: Integer);
begin
    // Application code goes here...
end;


procedure TForm1.Button1Click(Sender: TObject);
var
  zip: TChilkatZip;

begin
  zip := TChilkatZip.Create(Self);
  zip.OnToBeAdded := zipToBeAdded;
  // ...
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ToBeUnzipped
procedure ToBeUnzipped(ASender: TObject; const path: WideString; compressedSize: Integer; fileSize: Integer; out skip: Integer);

This event fires during method calls that unzip a zip archive. It is called just before each file is unzipped. The skip output-only argument may be set to 1 to prevent the file from being unzipped.

Delphi ActiveX Event callback implementation:

procedure TForm1.zipENTRY_NAME(ASender: TObject;  const path: WideString; compressedSize: Integer; fileSize: Integer; out skip: Integer);
begin
    // Application code goes here...
end;


procedure TForm1.Button1Click(Sender: TObject);
var
  zip: TChilkatZip;

begin
  zip := TChilkatZip.Create(Self);
  zip.OnToBeUnzipped := zipToBeUnzipped;
  // ...
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ToBeZipped
procedure ToBeZipped(ASender: TObject; const path: WideString; fileSize: Integer; out skip: Integer);

This event fires during method calls that create a zip archive. It is called just before each file is to be zipped. The skip output-only argument may be set to 1 to prevent the file from being zipped.

Delphi ActiveX Event callback implementation:

procedure TForm1.zipENTRY_NAME(ASender: TObject;  const path: WideString; fileSize: Integer; out skip: Integer);
begin
    // Application code goes here...
end;


procedure TForm1.Button1Click(Sender: TObject);
var
  zip: TChilkatZip;

begin
  zip := TChilkatZip.Create(Self);
  zip.OnToBeZipped := zipToBeZipped;
  // ...
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UnzipBegin
procedure UnzipBegin(ASender: TObject; );

To be documented soon...

Delphi ActiveX Event callback implementation:

procedure TForm1.zipENTRY_NAME(ASender: TObject;  );
begin
    // Application code goes here...
end;


procedure TForm1.Button1Click(Sender: TObject);
var
  zip: TChilkatZip;

begin
  zip := TChilkatZip.Create(Self);
  zip.OnUnzipBegin := zipUnzipBegin;
  // ...
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UnzipEnd
procedure UnzipEnd(ASender: TObject; );

Fired when finished unzipping.

Delphi ActiveX Event callback implementation:

procedure TForm1.zipENTRY_NAME(ASender: TObject;  );
begin
    // Application code goes here...
end;


procedure TForm1.Button1Click(Sender: TObject);
var
  zip: TChilkatZip;

begin
  zip := TChilkatZip.Create(Self);
  zip.OnUnzipEnd := zipUnzipEnd;
  // ...
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WriteZipBegin
procedure WriteZipBegin(ASender: TObject; );

Fired when starting to write a zip.

Delphi ActiveX Event callback implementation:

procedure TForm1.zipENTRY_NAME(ASender: TObject;  );
begin
    // Application code goes here...
end;


procedure TForm1.Button1Click(Sender: TObject);
var
  zip: TChilkatZip;

begin
  zip := TChilkatZip.Create(Self);
  zip.OnWriteZipBegin := zipWriteZipBegin;
  // ...
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WriteZipEnd
procedure WriteZipEnd(ASender: TObject; );

Fired when finished writing a zip.

Delphi ActiveX Event callback implementation:

procedure TForm1.zipENTRY_NAME(ASender: TObject;  );
begin
    // Application code goes here...
end;


procedure TForm1.Button1Click(Sender: TObject);
var
  zip: TChilkatZip;

begin
  zip := TChilkatZip.Create(Self);
  zip.OnWriteZipEnd := zipWriteZipEnd;
  // ...
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