--- a/src/gl/common.h Tue Jan 26 12:21:35 2021 +0200 +++ b/src/gl/common.h Tue Jan 26 18:02:17 2021 +0200 @@ -17,6 +17,7 @@ */ #pragma once +#include <QWidget> #include <QColor> #include <QOpenGLBuffer> #include <QOpenGLFunctions>