OpenGL error messages are now reported properly

src/qt/qt_mainwindow.hpp

@@ -182,6 +182,9 @@ private:
     friend class RendererCommon;
     friend class RendererStack; // For UI variable access by non-primary renderer windows.
     friend class WindowsRawInputFilter; // Needed to reload renderers on style sheet changes.
+
+    
+    bool isShowMessage = false;
 };
 
 #endif // QT_MAINWINDOW_HPP