🚀 go-pugleaf

Bob White <bob@murkworks.com> wrote:
>I am trying to pass a callback for a Pascal (Delphi) procedure to a DLL written in 
>C++ and execute the callback from the DLL.  I can't seem to keep Windows stable 
>enough to track things down with TDW and I can't get a valid return value from 
>MakeProcInstance for any pascal procedures.  And Delphi (as far as I can tell) does 
>not allow you to export functions from within programs, only DLLs.
>
>I've read all the FAQs I could find and reviewed all the on-line tech journals I've 
>stumbled across, but no one seems to have addressed this issue.  The time of 
>desperation is near...
>
>Does anyone have an example of such a callback.  Prototypes and code examples for 
>both ends would be a great help... actually at this point, any inforation would be a 
>great help.
>

Make sure to give the Delphi proc the "export" directive.  Also, be sensitive to
parameter passing conventions: you may need to use the "cdecl" directive if the
C++ function prototype isn't declared to be PASCAL.

     -Steve Teixeira
      steixeir@borland.com