GContext and GC in Xlib

Many Xlib functions will return and use an integer resource ID, which allows you to refer to objects stored on the X server (see "Overview of the X Window System"), such as Window, Font, Pixmap, Colormap and Cursor. GCs however, are references to opaque structures stored on the client side for efficiency reasons. For each GC there is a correponding XID, whose type is GContext.

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This page is not a part of the Xlib Programming manual.

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Christophe Tronche, [email protected]