--- a/c++/patchcanvas/canvasbezierline.cpp	2019-11-17 21:34:05.000000000 +0100
+++ b/c++/patchcanvas/canvasbezierline.cpp	2020-09-02 13:13:34.042234477 +0200
@@ -18,6 +18,7 @@
 #include "canvasbezierline.h"
 
 #include <QtGui/QPainter>
+#include <QtGui/QPainterPath>
 
 #include "canvasport.h"
 #include "canvasportglow.h"
--- a/c++/patchcanvas/canvasbezierlinemov.cpp	2019-11-17 21:34:05.000000000 +0100
+++ b/c++/patchcanvas/canvasbezierlinemov.cpp	2020-09-02 13:13:27.093234119 +0200
@@ -18,6 +18,7 @@
 #include "canvasbezierlinemov.h"
 
 #include <QtGui/QPainter>
+#include <QtGui/QPainterPath>
 
 #include "canvasport.h"
 
--- a/c++/widgets/pixmapdial.cpp	2019-11-17 21:34:05.000000000 +0100
+++ b/c++/widgets/pixmapdial.cpp	2020-09-02 13:13:16.853233591 +0200
@@ -21,6 +21,7 @@
 
 #include <QtCore/QTimer>
 #include <QtGui/QPainter>
+#include <QtGui/QPainterPath>
 #include <QtGui/QPaintEvent>
 
 PixmapDial::PixmapDial(QWidget* parent)
