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Resolved How to handle ActiveX methods that have output parameters?
  1. How-to
  2.  OLE
  3.  PowerBuilder
0 Votes
  1. Mark Jones
  2. PowerBuilder
  3. Thursday, 27 July 2023 05:10 PM UTC

I am using the Amyuni ActiveX controls for PDF processing.   A couple of their methods have output parameters. 

System.Boolean SearchTextEx(System.Int16 Start, System.String Text, [out] System.Int32  Page, [out] System.Double xPos, [out] System.Double yPos)

Here is my code that does not work... 

lb_found=lole_cdintfex.SearchTextEx(-1 , ls_search, li_found_page, ldbl_found_xpos, ldbl_found_ypos) 

This function searches for text and returns the page and position in variables li_found_page, ldbl_found_xpos and ldbl_found_ypos.

It appears that these variables need to be passed by reference,  right now with my current syntax I end up with 0 returned in all these values when I find a string.   Is there a way to pass variables by reference in an ActiveX method?  Is there a workaround e.g using AutomationNativePointers or something like this or possibly a way of overloading the function call by creating my OleObject user object?

Thanks,

   Mark

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