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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.
- w
- Specifies the window whose list of children, root, parent,
and number of children you want to obtain.
The XQueryTree function
returns the root ID, the parent window 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
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