diff -r d948d39e5da8 -r f5d36be88c61 QTfrontend/ui/widget/drawmapwidget.cpp
--- a/QTfrontend/ui/widget/drawmapwidget.cpp	Wed Mar 14 21:46:07 2018 +0100
+++ b/QTfrontend/ui/widget/drawmapwidget.cpp	Wed Mar 14 22:59:06 2018 +0100
@@ -56,6 +56,7 @@
 
     ui->graphicsView->setScene(scene);
     connect(scene, SIGNAL(pathChanged()), this, SLOT(pathChanged()));
+    connect(scene, SIGNAL(brushSizeChanged(int)), this, SLOT(brushSizeChanged_slot(int)));
 }
 
 void DrawMapWidget::resizeEvent(QResizeEvent * event)
@@ -133,6 +134,11 @@
     if(m_scene) m_scene->setPathType(pathType);
 }
 
+void DrawMapWidget::setBrushSize(int brushSize)
+{
+    if(m_scene) m_scene->setBrushSize(brushSize);
+}
+
 void DrawMapWidget::save(const QString & fileName)
 {
     if(m_scene)
@@ -179,7 +185,10 @@
     ui->lblPoints->setNum(m_scene->pointsCount());
 }
 
-
+void DrawMapWidget::brushSizeChanged_slot(int brushSize)
+{
+    emit brushSizeChanged(brushSize);
+}
 
 DrawMapView::DrawMapView(QWidget *parent) :
     QGraphicsView(parent)