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git-svn-id: file:///fltk/svn/fltk/branches/branch-1.1@4144 ea41ed52-d2ee-0310-a9c1-e6b18d33e121

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+//
+// "$Id$"
+//
+// FLUID undo definitions for the Fast Light Tool Kit (FLTK).
+//
+// Copyright 1998-2005 by Bill Spitzak and others.
+//
+// This library is free software; you can redistribute it and/or
+// modify it under the terms of the GNU Library General Public
+// License as published by the Free Software Foundation; either
+// version 2 of the License, or (at your option) any later version.
+//
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+// Library General Public License for more details.
+//
+// You should have received a copy of the GNU Library General Public
+// License along with this library; if not, write to the Free Software
+// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
+// USA.
+//
+// Please report all bugs and problems on the following page:
+//
+//     http://www.fltk.org/str.php
+//
+
+#ifndef undo_h
+#  define undo_h
+
+extern int undo_current;		// Current undo level in buffer
+extern int undo_last;			// Last undo level in buffer
+extern int undo_save;			// Last undo level that was saved
+
+void redo_cb(Fl_Widget *, void *);	// Redo menu callback
+void undo_cb(Fl_Widget *, void *);	// Undo menu callback
+void undo_checkpoint();			// Save current file to undo buffer
+void undo_clear();			// Clear undo buffer
+void undo_resume();			// Resume undo checkpoints
+void undo_suspend();			// Suspend undo checkpoints
+
+#endif // !undo_h
+
+//
+// End of "$Id$".
+//