The new Delphi Add-in enables you to test Delphi controls that were created in the Delphi IDE and are based on the Win32 VCL library.
QTP Delphi Add-in Extensibility is an SDK (Software Development Kit) package that enables you to develop support for applications that use third-party and custom Delphi controls that are not supported out-of-the-box by the QTP Professional Delphi Add-in.
For more information, see Using the Delphi Add-in
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