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XQueryTree(3X11)
X11R6
NAME
  XQueryTree - query window tree information

SYNOPSIS
  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 (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.

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

Index for Section 3X11

Alphabetical listing for X

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