XQueryTree man page on aLinux

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XQueryTree(3)			XLIB FUNCTIONS			 XQueryTree(3)

NAME
       XQueryTree - query window tree information

SYNTAX
       Status XQueryTree(Display *display, Window w, Window *root_return, Win‐
	      dow *parent_return, Window **children_return, unsigned int
	      *nchildren_return);

ARGUMENTS
       children_return
		 Returns the list of children.

       display	 Specifies the connection to the X server.

       nchildren_return
		 Returns the number of children.

       parent_return
		 Returns the parent window.

       root_return
		 Returns the root window.

       w	 Specifies the window whose list of children, root, parent,
		 and number of children you want to obtain.

DESCRIPTION
       The XQueryTree function returns the root ID, the parent window ID, a
       pointer to the list of children windows (NULL when there are no chil‐
       dren), and the number of children in the list for the specified window.
       The children are listed in current stacking order, from bottom-most
       (first) to top-most (last).  XQueryTree returns zero if it fails and
       nonzero if it succeeds.	To free a non-NULL children list when it is no
       longer needed, use XFree.

BUGS
       This really should return a screen *, not a root window ID.

SEE ALSO
       XFree(3X11), XGetWindowAttributes(3X11), XQueryPointer(3X11)
       Xlib - C Language X Interface

X Version 11			  libX11 1.2			 XQueryTree(3)
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