Structures

This section contains information about the following structures used with DirectDraw:

• DDBLTBATCH
• DDBLTFX
• DDCAPS
• DDCOLORCONTROL
• DDCOLORKEY
• DDDEVICEIDENTIFIER
• DDGAMMARAMP
• DDOVERLAYFX
• DDPIXELFORMAT
• DDSCAPS
• DDSCAPS2
• DDSURFACEDESC
• DDSURFACEDESC2
• DDVIDEOPORTBANDWIDTH
• DDVIDEOPORTCAPS
• DDVIDEOPORTCONNECT
• DDVIDEOPORTDESC
• DDVIDEOPORTINFO
• DDVIDEOPORTSTATUS

Note  The memory for all DirectX structures should be initialized to zero before use. In addition, all structures that contain a dwSize member should set the member to the size of the structure, in bytes, before use. The following example performs these tasks on a common structure, DDCAPS:

DDCAPS ddcaps; // Can't use this yet.
 
ZeroMemory(&ddcaps, sizeof(DDCAPS));
ddcaps.dwSize = sizeof(DDCAPS);
 
// Now the structure can be used.
.
.