Ultimate++

Ultimate++ is a C++ cross-platform development framework which aims to reduce the code complexity of typical desktop applications by extensively exploiting C++ features.

Features

• currently supports Microsoft Windows, Linux/X11 and BSD/X11.
• includes an IDE and a GUI designer.
• uses the free BSD license.
• uses heavily RAII and auto pointers-like mechanisms to avoid manual memory management and even to limit the use of pointers in the code
• can emulate native widgets look and feel. On X11 systems, Ultimate++ supports gtk widgets look and feel.
• numerous reference examples are provided.
• standard distribution comes with ultimate++ sources included, even the IDE ones.
• uses NTL as template system instead of STL

Hello World

The following example creates a U++ application with "Hello world!" button:

#include <CtrlLib/CtrlLib.h>

using namespace Upp;

class MyApp : public TopWindow {
	Button button;

	void Click() {
		if(PromptYesNo("Button was clicked. Do you want to quit?"))
			Break();
	}

	typedef MyApp CLASSNAME;

public:
	MyApp() {
		Title("Hello world");
		button.SetLabel("Hello world!");
		button <<= THISBACK(Click);
		Add(button.HSizePos(100, 100).VSizePos(100, 100));
	}
};

GUI_APP_MAIN
{
	MyApp().Run();
}

Criticism

• it doesn't use the Standard Template Library (STL)
• NTL template system semantics are difficult to understand at first since assignment operator in reality gets overloaded to perform a move operation and not a copy. This is done for performance reasons and to overcome some STL limitations, but new C++0x standard should enable even STL users to perform move operations with classes by introducing the operator &&.
• since many C++ operators are overloaded to perform common tasks such as assigning callbacks, understanding the code can be a difficult at first
• there are no layouts handlers for widgets, although Ultimate++ has a system of logic coordinates to maintain relative coordinates of objects when resizing windows. Having three buttons properly aligned and resized on a row without layout managers still remains difficult, though.
• Ultimate++ IDE support for languages other than C++ is very limited. It provides some syntax coloring for SQL and little else.

Software built on Ultimate++

• AWS Truewind openWind - an open-source wind farm design software
• Gastronomie Kontroll System, a point of sale system for restaurants
• WebMap, GIS application

See also

• Widget toolkit
• List of widget toolkits
• Qt (toolkit) - toolkit used by KDE applications
• GTK+ - The GIMP toolkit, a widget toolkit used by GNOME applications
• FLTK - A light, cross platform, non-native widget toolkit
• FOX toolkit - A fast, open source, cross-platform widget toolkit
• wxWidgets