richedit: Don't change text mode with undo or redo stack.

16d78904 · Dylan Smith · Alexandre Julliard · 75eef418 · 16d78904
Commit 16d78904 authored Jul 29, 2010 by Dylan Smith Committed by Alexandre Julliard Jul 30, 2010
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editor.c dlls/riched20/editor.c +1 -1

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--- a/dlls/riched20/editor.c
+++ b/dlls/riched20/editor.c
@@ -4319,7 +4319,7 @@ LRESULT ME_HandleMessage(ME_TextEditor *editor, UINT msg, WPARAM wParam,
    int mask = 0;
    int changes = 0;

-    if (ME_GetTextLength(editor))
+    if (ME_GetTextLength(editor) || editor->pUndoStack || editor->pRedoStack)
      return E_UNEXPECTED;

    /* Check for mutually exclusive flags in adjacent bits of wParam */