Amyuni with PB12.6 64-bit

I am using Amyuni PDF Creator to create PDF files.

The main library file is cdintf.dll.

I have a user object in which all Amyuni API function calls are prototyped.

eg: function Long DriverInit (String Printer) Library "cdintf.dll" alias for "DriverInit;Ansi"

Now I am trying to deploy this as 64-bit.

I find I need to register the 64-bit version of Amyuni: REGSVR32 cdintf64.dll

I then need to modify my user object to use this 64-bit library

eg: function Long DriverInit(String Printer) Library "cdintf64.dll" alias for DriverInit;Ansi"

This is unsatisfactory because now I need two versions of my app - 32-bat and 64-bit.

I prefer to have just one set of source code.

Any suggestions?