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July 12, 2007

Re-Importing an ActiveX in Delphi

When new methods or properties are added to an ActiveX, it will need to be re-imported by Delphi to regenerate the corresponding .pas, .dcu, and .dcr files. (The .pas is the source code wrapper created by Delphi for the ActiveX. The .dcu is the Delphi Compiled Unit of the .pas, and the .dcr is the icon that is displayed in the ActiveX components palette in the Delphi IDE.)

For example, the .pas, .dcu, and .dcr files for the Chilkat Email ActiveX are:


To re-import, select the Component–>Import ActiveX Control menu option. Then select the ActiveX component from the listbox and click the "Create Unit" button.

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