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4/8/2010

This structure passes override information to the IDirectDrawSurface::UpdateOverlaymethod.

Syntax 

typedef struct _DDOVERLAYFX{ 
  DWORD 
dwSize; 
  DWORD 
dwAlphaConstBitDepth; 
  DWORD 
dwAlphaConst; 
  DDCOLORKEY 
dckDestColorkey; 
  DDCOLORKEY 
dckSrcColorkey; 
} DDOVERLAYFX,FAR *LPDDOVERLAYFX;

Members

dwSize

Size of the structure, in bytes.

This member must be initialized before the structure is used.

dwAlphaConstBitDepth

Bit depth used to specify the alpha constant.

dwAlphaConst

Constant to use as the alpha channel.

dckDestColorkey

Destination color key override.

dckSrcColorkey

Source color key override.

Requirements

Header ddraw.h
Windows Embedded CE Windows Embedded CE 6.0 and later
Windows Mobile Pocket PC for Windows Mobile Version 5.0 and later, Smartphone for Windows Mobile Version 5.0 and later