#DEFINE DM_OUT_BUFFER 2
#DEFINE DM_IN_BUFFER  8
#DEFINE DM_IN_PROMPT  4

DECLARE INTEGER DocumentProperties IN winspool.drv;
	INTEGER hWnd, INTEGER hPrinter, STRING pDeviceName,;
	STRING @pDevModeOutput, STRING @pDevModeInput, INTEGER fMode
...
= DocumentProperties(hWindow, hPrinter, cPrinter,;
	@cDevmode, @cDevmode,;
	DM_IN_PROMPT+DM_IN_BUFFER+DM_OUT_BUFFER)