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-rw-r--r--FL/Fl_Window_Driver.H1
1 files changed, 1 insertions, 0 deletions
diff --git a/FL/Fl_Window_Driver.H b/FL/Fl_Window_Driver.H
index db1f33f9f..62fe68637 100644
--- a/FL/Fl_Window_Driver.H
+++ b/FL/Fl_Window_Driver.H
@@ -102,6 +102,7 @@ public:
// --- window management
virtual void take_focus();
+ virtual void flush(); // the default implementation may be enough
virtual void flush_double();
virtual void flush_overlay();
virtual void flush_single();