RGBA_GETALPHA

The RGBA_GETALPHA macro retrieves the alpha component of an RGBA D3DCOLOR value.

RGBA_GETALPHA(rgb)    ((rgb) >> 24) 

Parameters

rgb

Color index from which the alpha component is retrieved.

Return Values

Returns the alpha component.

Requirements

  Windows NT/2000: Requires Windows NT 4.0 SP3 or later.
  Windows 95/98: Requires Windows 95 or later. Available as a redistributable for Windows 95.
  Version: Requires DirectX 2.0 or later.
  Header: Declared in d3dtypes.h.