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-rw-r--r--src/gui/GraphTreeWindow.hpp2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/gui/GraphTreeWindow.hpp b/src/gui/GraphTreeWindow.hpp
index 3991671d..9ab05f94 100644
--- a/src/gui/GraphTreeWindow.hpp
+++ b/src/gui/GraphTreeWindow.hpp
@@ -103,7 +103,7 @@ public:
void set_window(GraphTreeWindow* win) { _window = win; }
- bool on_button_press_event(GdkEventButton* ev) {
+ bool on_button_press_event(GdkEventButton* ev) override {
bool ret = Gtk::TreeView::on_button_press_event(ev);
if ((ev->type == GDK_BUTTON_PRESS) && (ev->button == 3))