| DirectX SDK |
DirectDraw supports all of the screen resolutions and depths supported by the display device driver. DirectDraw allows an application to change the mode to any one supported by the computer's display driver, including all supported 24- and 32-bpp (true-color) modes.
DirectDraw also supports HEL blitting in true-color surfaces. If the display device driver supports blitting at these resolutions, the hardware blitter will be used for display-memory-to-display-memory blits. Otherwise, the HEL will be used to perform the blits.
DirectDraw checks a list of known display modes against the display restrictions of the installed monitor. If DirectDraw determines that the requested mode is not compatible with the monitor, the call to the IDirectDraw7::SetDisplayMode method fails. Only modes that are supported on the installed monitor will be enumerated when you call the IDirectDraw7::EnumDisplayModes method.
DirectDraw checks a list of known display modes against the display restrictions of the installed monitor. If DirectDraw determines that the requested mode is not compatible with the monitor, the call to the DirectDraw7.SetDisplayMode method fails. Only modes that are supported on the installed monitor will be enumerated when you call the DirectDraw7.GetDisplayModesEnum method.