16.5 Manipulating Regions

Regions are arbitrary sets of pixel locations. Xlib provides functions for manipulating regions. The opaque type Region is defined in X11/Xutil.h. Xlib provides functions that you can use to manipulate regions. This section discusses how to:

• Create, copy, or destroy regions

• Move or shrink regions

• Compute with regions

• Determine if regions are empty or equal

• Locate a point or rectangle in a region

Next: Creating, Copying, or Destroying Regions

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Christophe Tronche, [email protected]