Retrieving the Capabilities of a Printer
Not every output device supports the entire set of graphics functions. For example, because of hardware limitations, most vector plotters do not support bit-block transfers. An application can determine whether a device supports a particular graphics function by calling the GetDeviceCaps function, specifying the appropriate index, and examining the return value.
The following example shows how an application tests a printer to determine whether it supports bit-block transfers.
// Examine the raster capabilities of the device
// identified by hdcPrint to verify that it supports
// the BitBlt function.
if ((GetDeviceCaps(hdcPrint, RASTERCAPS)
& RC_BITBLT) == 0)
{
DeleteDC(hdcPrint);
break;
}
else
{
// Print the bitmap using the printer DC.
}