XQueryTree(XS)    X Version 11 (Release 5) 6 January 1993     XQueryTree(XS)


 Name

    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


    childrenreturn
                   Returns the list of children.

    display        Specifies the connection to the X server.

    nchildrenreturn
                   Returns the number of children.

    parentreturn  Returns the parent window.

    rootreturn    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