22c0808ac8
At the end of xwl_present_cleanup, these events aren't reachable anymore, so if we don't free them first, they're leaked. (cherry picked from commit 64565ea344fef0171497952ef75f019cb420fe3b) v2: * Simpler backport, no need to keep a reference to the pixmap on the 1.20 branch.
X Server
The X server accepts requests from client applications to create windows, which are (normally rectangular) "virtual screens" that the client program can draw into.
Windows are then composed on the actual screen by the X server (or by a separate composite manager) as directed by the window manager, which usually communicates with the user via graphical controls such as buttons and draggable titlebars and borders.
For a comprehensive overview of X Server and X Window System, consult the following article: https://en.wikipedia.org/wiki/X_server
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https://lists.freedesktop.org/mailman/listinfo/xorg
The master development code repository can be found at:
https://gitlab.freedesktop.org/xorg/xserver
For patch submission instructions, see:
https://www.x.org/wiki/Development/Documentation/SubmittingPatches
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