Change Printer settings at run time

Anyone have any idea or clue please...

I think you must use the external DLL libraries under windows to achieve this:

PROCEDURE PageSetupDlgA EXTERNAL "comdlg32.dll":U:
    DEFINE RETURN PARAMETER answer AS SHORT.
    DEFINE INPUT-OUTPUT PARAMETER tagPSD AS MEMPTR.
END PROCEDURE.

PROCEDURE PageSetupDlgW EXTERNAL "comdlg32.dll":U:
    DEFINE RETURN PARAMETER answer AS SHORT.
    DEFINE INPUT-OUTPUT PARAMETER tagPSD AS MEMPTR.
END PROCEDURE.

Thanks Socaciu.

But can you please provide an example for using these procedure from this dll. I am actually new at using dlls in progress code. If you have any reference for it then that will be more helpful for me.

Take a look at this project on GitHub.  In the Progress subdirectory it has an example of how to call the methods in a .DLL (or a .so on Linux/Unix) from a Progress program.

github.com/.../Progress

The related msdn page contains instruction on how to write the code needed:

look for "Setting Up the Printed Page"

msdn.microsoft.com/.../ms646829(v=vs.85).aspx