XWMHints(3) on Linux
The text e7150eb6be56, as Debian 7 (Wheezy) shipped it.
allocate window manager hints structure and set or read a window's WM_HINTS property
The text e7150eb6be56, as Debian 7 (Wheezy) shipped it.
allocate window manager hints structure and set or read a window's WM_HINTS property