AlphaBlend API (Windows CE 5.0)
This Catalog item adds the function AlphaBlend to the Graphics Device Interface (GDI) and the Graphics Primitive Engine (GPE).
The AlphaBlend function displays bitmaps that have transparent or semitransparent pixels.
Implementation Considerations
The following table shows the Sysgen variables that enable the AlphaBblend API.
| Sysgen variable | Description |
|---|---|
| SYSGEN_GDI_ALPHABLEND | Set this Sysgen to enable the AlphaBlend function. |
Modules and Components
The following table shows the components and modules that implement DirectDraw.
| Item | Module | Component |
|---|---|---|
| AlphaBlend API | mgalphablend | None |
Hardware Considerations
AlphaBlend API does not require special display hardware, though it can use hardware acceleration if it is available. It can be supported in software.
Dependencies
The following table lists the Catalog item dependencies that most directly relate to this item's functionality. There are additional dependencies as well. For more information on determining the complete list of dependencies for this Catalog item, see Catalog Item Dependencies.
| Catalog Item | Sysgen variable |
|---|---|
| Minimal GDI Configuration | SYSGEN_MINGDI |
| Minimal GWES Configuration | SYSGEN_MINGWES |
| Minimal Input Configuration | SYSGEN_MININPUT |
See Also
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