2 files changed, 8 insertions, 0 deletions
diff --git a/qfunctionconfigurator/qfunctionconfigurator.cpp b/qfunctionconfigurator/qfunctionconfigurator.cpp
index 144b69e1..8a61c8f6 100644
--- a/qfunctionconfigurator/qfunctionconfigurator.cpp
+++ b/qfunctionconfigurator/qfunctionconfigurator.cpp
@@ -151,7 +151,10 @@ void QFunctionConfigurator::paintEvent(QPaintEvent *e)
     QPainter p(this);
 
     if (_background.isNull())
+    {
+        _draw_function = true;
         drawBackground();
+    }
 
     if (_draw_function) {
         _draw_function = false;
diff --git a/qfunctionconfigurator/qfunctionconfigurator.h b/qfunctionconfigurator/qfunctionconfigurator.h
index 59c8ffeb..845dd29c 100644
--- a/qfunctionconfigurator/qfunctionconfigurator.h
+++ b/qfunctionconfigurator/qfunctionconfigurator.h
@@ -34,6 +34,11 @@ public:
         spline_color = color;
         update();
     }
+    void force_redraw()
+    {
+        _background = QPixmap();
+        update();
+    }
 protected slots:
     void paintEvent(QPaintEvent *e);
     void mousePressEvent(QMouseEvent *e);