From: SL on
OS: Windows XP Professional x64 Version 2003 Service Pack 1
DDK: Windows DDK 3790.1830
Case: Printing from a 32-bit application

DrvQueryFontTree returns a pointer to an FD_GLLYPHSET structure.
After that ntdll.dll fails. Following is the call stack information:

ntdll.dll!RtlCopyMemory () + 0xb0 bytes

When the application that prints is a 64-bit application, there is no
failure
even though the content of FD_GLLYPHSET structure seems to be identical
with the one from printing from 32-bit application.