XQueryTree(3X11) XLIB FUNCTIONS XQueryTree(3X11)
XQueryTree - query window tree information
Status XQueryTree(Display *display, Window w, Window
*root_return, Window *parent_return, Window
**children_return, unsigned int *nchildren_return);
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. you want to obtain
w Specifies the window whose list of children, root,
parent, and number of children.
The XQueryTree function returns the root ID, the parent win-
dow ID, a pointer to the list of children windows (NULL when
there are no children), 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.
This really should return a screen *, not a root window ID.
XFree(3X11), XGetWindowAttributes(3X11), XQueryPointer(3X11)
Xlib - C Language X Interface
XFree86 Version 4.5.0 1
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