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-rw-r--r--fluid/undo.h6
1 files changed, 5 insertions, 1 deletions
diff --git a/fluid/undo.h b/fluid/undo.h
index 171fe062f..c5fae3306 100644
--- a/fluid/undo.h
+++ b/fluid/undo.h
@@ -1,7 +1,7 @@
//
// FLUID undo definitions for the Fast Light Tool Kit (FLTK).
//
-// Copyright 1998-2010 by Bill Spitzak and others.
+// Copyright 1998-2024 by Bill Spitzak and others.
//
// This library is free software. Distribution and use rights are outlined in
// the file "COPYING" which should have been included with this file. If this
@@ -19,13 +19,17 @@
class Fl_Widget;
+#define kUndoWindowResize 1
+
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
+extern int undo_once_type; // Suspend further undos of the same type
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_checkpoint_once(int type); // Save undo buffer once until a different checkpoint type is called
void undo_clear(); // Clear undo buffer
void undo_resume(); // Resume undo checkpoints
void undo_suspend(); // Suspend undo checkpoints