FIXED: #1471 The rendered image should no longer disappear from NelGUI widget, when resizing another widget.

code/nel/tools/3d/object_viewer_qt/src/plugins/gui_editor/nel3d_widget.cpp

@@ -29,6 +29,11 @@ namespace GUIEditor
 	{
 		driver = NULL;
 		textContext = NULL;
+
+		// Need to set this attribute with a NULL paintengine returned to Qt
+		// so that we can render the widget normally ourselves, without the image
+		// disappearing when a widget is resized or shown on top of us
+		setAttribute( Qt::WA_PaintOnScreen, true );
 	}
 
 	Nel3DWidget::~Nel3DWidget()

code/nel/tools/3d/object_viewer_qt/src/plugins/gui_editor/nel3d_widget.h

@@ -43,6 +43,12 @@ namespace GUIEditor
 		NL3D::UDriver* getDriver() const{ return driver; }
 		NL3D::UTextContext* getTextContext() const{ return textContext; }
 
+
+		// Need to return NULL paintengine to Qt so that we can
+		// render the widget normally ourselves, without the image
+		// disappearing when a widget is resized or shown on top of us
+		QPaintEngine* paintEngine() const{ return NULL; }
+
 	public Q_SLOTS:
 		void clear();
 

code/nel/tools/3d/object_viewer_qt/src/plugins/gui_editor/nelgui_widget.cpp

@@ -96,5 +96,10 @@ namespace GUIEditor
 		CWidgetManager::getInstance()->drawViews( 0 );
 		getDriver()->swapBuffers();
 	}
+
+	void NelGUIWidget::paintEvent( QPaintEvent *evnt )
+	{
+		draw();
+	}
 }
 

code/nel/tools/3d/object_viewer_qt/src/plugins/gui_editor/nelgui_widget.h

@@ -35,6 +35,9 @@ namespace GUIEditor
 		bool parse( SProjectFiles &files );
 		void draw();
 
+	protected:
+		void paintEvent( QPaintEvent *evnt );
+
 	};
 }