DirectDraw Structures (SDK)
The following topics contain information about the following structures used with DirectDraw.
| Programming element | PPC | SP | Description |
|---|---|---|---|
| DDALPHABLTFX | X | X | This structure passed details about blit operations to the IDirectDrawSurface::AlphaBlt method. |
| DDARGB | X | X | This structure contains a color representation with four channels. |
| DDBLTFX | X | X | This structure passes raster operations, effects, and override information to the IDirectDrawSurface::Blt method. |
| DDCAPS | X | X | This structure represents the capabilities of the hardware exposed through the DirectDraw object. |
| DDCOLORCONTROL | X | X | This structure defines the color controls associated with a DirectDrawVideoPort object, an overlay surface, or a primary surface. |
| DDCOLORKEY | X | X | This structure describes a source color key, destination color key, or color space. |
| DDDEVICEIDENTIFIER | X | X | This structure contains information identifying the DirectDraw device. |
| DDGAMMARAMP | X | X | This structure describes a gamma ramp with red, green, and blue data. |
| DDOVERLAYFX | X | X | This structure passes override information to the IDirectDrawSurface::UpdateOverlay method. |
| DDPIXELFORMAT | X | X | This structure describes the pixel format of a DirectDrawSurface object for the IDirectDrawSurface::GetPixelFormat method. |
| DDSCAPS | X | X | This structure defines the capabilities of a DirectDrawSurface object. |
| DDSURFACEDESC | X | X | This structure contains a description of a surface. This structure is used to pass surface parameters to the IDirectDraw::CreateSurface and IDirectDrawSurface::SetSurfaceDesc methods. |
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; // Cannot use this yet.
ZeroMemory(&ddcaps, sizeof(DDCAPS));
ddcaps.dwSize = sizeof(DDCAPS);
// Now the structure can be used.
See Also
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