7.2.7 Setting the Arc Mode, Subwindow Mode, and Graphics Exposure
To set the arc mode of a given GC, use
XSetArcMode().
To set the subwindow mode of a given GC, use
XSetSubwindowMode().
To set the graphics-exposures flag of a given GC, use
XSetGraphicsExposures().
Christophe Tronche, ch@tronche.com