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Window Compositor Catalog Items and Sysgen Variables (Compact 7)

3/12/2014

In Windows Embedded Compact, you can implement functionality to compose windows on the display screen by using alpha blending.

For more information, see Window Compositor.

For more information about how to add or remove catalog items, see Design Your First OS.

Hardware and Software Requirements

Catalog Items and Sysgen Variables

The following table describes the catalog items and associated SYSGEN variables that you can use to add Window Compositor to your OS.

Catalog item SYSGEN variable Description Dependencies

Window Compositor

SYSGEN_COMPOSITION

Supports different composition modes for each window in the OS, including alpha transparency for 16-bit and 32-bit display modes.

Requires environment variable BSP_GLES2COMPOSITOR to use the OpenGL compositor and OpenGL driver. Otherwise, SYSGEN_COMPOSITION adds the default Windows Embedded Compact GDI compositor. For more information, see BSP Environment Variables.

See Also

Other Resources

Window Compositor