Enum VLSimpleImageBuffer.TVLAlphaCompOperation
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Package: VideoLabBasicPkg
Unit: VLSimpleImageBuffer
Contents |
Syntax
Delphi:
type TVLAlphaCompOperation = (acoOver, acoIn, acoOut, acoATop, acoXor, acoPlus);
C++ Builder:
enum TVLAlphaCompOperation {acoOver, acoIn, acoOut, acoATop, acoXor, acoPlus};
Visual C++ (MFC):
enum CTVLAlphaCompOperation {acoOver, acoIn, acoOut, acoATop, acoXor, acoPlus};
Summary
Enumerated type for selecting the Alpha composition operation.
Description
Defines enumerated type for selecting the Alpha composition operation.
Values
| acoOver | A occludes B. |
| acoIn | A within B. A acts as a matte for B. A shows only where B is visible. |
| acoOut | A outside B. NOT-B acts as a matte for A. A shows only where B is not visible. |
| acoATop | Combination of (A IN B) and (B OUT A). B is both back-ground and matte for A. |
| acoXor | Combination of (A OUT B) and (B OUT A). A and B mutually exclude each other. |
| acoPlus | Blend without precedence |
