hpux man page for xchangesaveset

XChangeSaveSet()														  XChangeSaveSet()

Name
  XChangeSaveSet - add or remove a subwindow from the client's save-set.

Synopsis
  XChangeSaveSet(display, w, change_mode)
	Display *display;
	Window w;
	int change_mode;

Arguments
  display   Specifies a connection to an X server; returned from XOpenDisplay().

  w	    Specifies  the ID of the window whose children you want to add or remove from the client's save-set; it must have been created by
	    some other client.

  change_mode
	    Specifies the mode.  Pass one of these constants: SetModeInsert (adds the window to  this  client's  save-set)  or	SetModeDelete
	    (deletes the window from this client's save-set).

Description
  XChangeSaveSet() adds or deletes windows from a client's save-set.  This client is usually the window manager.

  The  save-set  of  the window manager is a list of other client's top-level windows which have been reparented.  If the window manager dies
  unexpectedly, these top-level application windows are children of a window manager window and therefore would normally be  destroyed.   The
  save-set  prevents this by automatically reparenting the windows listed in the save-set to their closest existing ancestor, and then remap-
  ping them.

  Windows are removed automatically from the save-set by the server when they are destroyed.

  For more information on save-sets, see Volume One, Chapter 15, Other Programming Techniques.

Errors
  BadMatch  w not created by some other client.

  BadValue

  BadWindow

See Also
  XAddToSaveSet(), XRemoveFromSaveSet().

Xlib - Window Save Set														  XChangeSaveSet()