forceGDI

Force the print operation to go through GDI.
[read/write property] forceGDI([out, retval] VARIANT_BOOL *gdi) forceGDI([in] VARIANT_BOOL gdi)
If this property is set to true, all printing will go through Windows GDI, even for PostScript printers.

resetParams resets this to its default value of false, which means to generate PostScript code for PostScript printers, and use GDI for non-PostScript printers.

VB6:
pdf.forceGDI = True
resetParams
printerSupportsPostScript