Writes the changes in the devmode to the printer.
LONG dDocumentProperties(HWND MainWnd, LPLONG lpLong, LPTSTR lpString)
Input value: MainWnd - handle to a window (can be NULL)
Input value: lpLong - - pointer to a long value. A handle to the printer to set. By default
the value can be NULL. In this case the currently installed printer settings will be chanced.
Input value: lpString - - pointer to a string value. The value is not used, can be NULL
Return value - Returns 0 on success, otherwise returns the error code to be
passed to GetLastError().
NOTE: All of these parameters are only necessary, because of the Install Shield DLL calling format.
NOTE: This function is outdated, no longer recommended.