Draw, Doc: Draw tutorial modernized to new hilighting.

tutorial/Draw01/main.cpp

@@ -3,7 +3,7 @@
 using namespace Upp;
 
 struct MyApp : TopWindow {
-	virtual void Paint(Draw& w) override {
+	void Paint(Draw& w) override {
 		w.DrawRect(GetSize(), White());
 
 		w.DrawRect(10, 10, 60, 80, Green());

tutorial/Draw03/main.cpp

@@ -5,7 +5,7 @@ using namespace Upp;
 struct MyApp : TopWindow {
 	DropList font_list;
 
-	virtual void Paint(Draw& w) override {
+	void Paint(Draw& w) override {
 		const String text = "Programming is fun";
 		Font fnt(~font_list, 60);
 		

tutorial/Draw04/main.cpp

@@ -5,7 +5,7 @@ using namespace Upp;
 struct MyApp : TopWindow {
 	Drawing drawing;
 
-	virtual void Paint(Draw& w) override {
+	void Paint(Draw& w) override {
 		w.DrawRect(GetSize(), White());
 		w.DrawDrawing(10, 10, 50, 60, drawing);
 		w.DrawDrawing(100, 10, 150, 100, drawing);

tutorial/Draw05/main.cpp

@@ -5,7 +5,7 @@ using namespace Upp;
 struct MyApp : TopWindow {
 	Image image;
 
-	virtual void Paint(Draw& w) override {
+	void Paint(Draw& w) override {
 		w.DrawRect(GetSize(), Cyan());
 		w.DrawImage(10, 10, image);
 	}