X Version 11 (Release 5)
XQueryTree(XS)
XQueryTree --
query window tree information
Syntax
Status XQueryTree(display, w, root_return, parent_return, children_return,
nchildren_return)
Display *display;
Window w;
Window *root_return;
Window *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,
and the number of children in the list for the specified window.
The children are listed in current stacking order, from bottommost
(first) to topmost (last).
XQueryTree
returns zero if it fails and nonzero if it succeeds.
To free this list when it is no longer needed, use
XFree.
Known limitations
This really should return a screen *, not a root window ID.
See also
XFree(XS),
XGetWindowAttributes(XS),
XQueryPointer(XS)
Xlib - C Language X Interface
© 2003 Caldera International, Inc. All rights reserved.
SCO OpenServer Release 5.0.7 -- 11 February 2003