TAlphaFormat indicates how the reserved byte of each pixel is used in a 32 bit bitmap.
TAlphaFormat = ( afIgnored, afDefined, afPremultiplied );
enum TAlphaFormat { afIgnored, afDefined, afPremultiplied };
TAlphaFormat has the following values:
|
Value |
Meaning |
|
afIgnored |
The Reserved byte in the TRGBQuad is ignored. |
|
afDefined |
The reserved byte in the TRGBQuad contains an alpha value. |
|
afPremultiplied |
The reserved byte in the TRGBQuad contains an alpha value. The red, green, and blue values have been premultiplied with the alpha value. |
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