From Jeremy Moles, import of the osgWidget NodeKit, sourced from the original http://osgwidget.googlecode.com/svn/trunk

Notes from Robert Osfield, I've merged osgWidget trunk, and added/changed CMakeLists.txt file to make it suitable for inclusion in the core OSG, and moved imagery/scripts/shaders out into OpenSceneGraph-Data

examples/osgwidgetmenu/osgwidgetmenu.cpp

@@ -0,0 +1,129 @@
+// -*-c++-*- osgWidget - Code by: Jeremy Moles (cubicool) 2007-2008
+// $Id: osgwidgetmenu.cpp 66 2008-07-14 21:54:09Z cubicool $
+
+#include <iostream>
+#include <osgDB/ReadFile>
+#include <osgWidget/Util>
+#include <osgWidget/WindowManager>
+#include <osgWidget/Box>
+#include <osgWidget/Label>
+
+// For now this is just an example, but osgWidget::Menu will later be it's own Window.
+// I just wanted to get this out there so that people could see it was possible.
+
+const unsigned int MASK_2D = 0xF0000000;
+const unsigned int MASK_3D = 0x0F000000;
+
+struct ColorLabel: public osgWidget::Label {
+	ColorLabel(const char* label):
+	osgWidget::Label("", "") {
+		setFont("fonts/Calibri1.ttf");
+		setFontSize(14);
+		setFontColor(1.0f, 1.0f, 1.0f, 1.0f);
+		setColor(0.3f, 0.3f, 0.3f, 1.0f);
+		addHeight(18.0f);
+		setCanFill(true);
+		setLabel(label);
+		setEventMask(osgWidget::EVENT_MOUSE_PUSH | osgWidget::EVENT_MASK_MOUSE_MOVE);
+	}
+
+	bool mousePush(double, double, osgWidget::WindowManager*) {
+		return true;
+	}
+
+	bool mouseEnter(double, double, osgWidget::WindowManager*) {
+		setColor(0.6f, 0.6f, 0.6f, 1.0f);
+		
+		return true;
+	}
+
+	bool mouseLeave(double, double, osgWidget::WindowManager*) {
+		setColor(0.3f, 0.3f, 0.3f, 1.0f);
+		
+		return true;
+	}
+};
+
+class ColorLabelMenu: public ColorLabel {
+	osg::ref_ptr<osgWidget::Window> _window;
+
+public:
+	ColorLabelMenu(const char* label):
+	ColorLabel(label) {
+		_window = new osgWidget::Box(
+			std::string("Menu_") + label,
+			osgWidget::Box::VERTICAL,
+			true
+		);
+
+		_window->addWidget(new ColorLabel("Open Some Stuff"));
+		_window->addWidget(new ColorLabel("Do It Now"));
+		_window->addWidget(new ColorLabel("Hello, How Are U?"));
+		_window->addWidget(new ColorLabel("Hmmm..."));
+		_window->addWidget(new ColorLabel("Option 5"));
+
+		_window->resize();
+
+		setColor(0.8f, 0.8f, 0.8f, 0.8f);
+	}
+
+	void managed(osgWidget::WindowManager* wm) {
+		osgWidget::Label::managed(wm);
+
+		wm->addChild(_window.get());
+
+		_window->hide();
+	}
+
+	void positioned() {
+		osgWidget::Label::positioned();
+
+		_window->setOrigin(getX(), getHeight());
+		_window->resize(getWidth());
+	}
+
+	bool mousePush(double, double, osgWidget::WindowManager*) {
+		if(!_window->isVisible()) _window->show();
+
+		else _window->hide();
+
+		return true;
+	}
+
+	bool mouseLeave(double, double, osgWidget::WindowManager*) {
+		if(!_window->isVisible()) setColor(0.8f, 0.8f, 0.8f, 0.8f);
+
+		return true;
+	}
+};
+
+int main(int argc, char** argv) {
+	osgViewer::Viewer viewer;
+
+	osgWidget::WindowManager* wm = new osgWidget::WindowManager(
+		&viewer,
+		1280.0f,
+		1024.0f,
+		MASK_2D,
+		osgWidget::WindowManager::WM_PICK_DEBUG | 
+		osgWidget::WindowManager::WM_NO_BETA_WARN
+	);
+
+	osgWidget::Window* menu = new osgWidget::Box("menu", osgWidget::Box::HORIZONTAL);
+
+	menu->addWidget(new ColorLabelMenu("Pick me!"));
+	menu->addWidget(new ColorLabelMenu("No, wait, pick me!"));
+	menu->addWidget(new ColorLabelMenu("Dont pick them..."));
+	menu->addWidget(new ColorLabelMenu("Grarar!?!"));
+
+	wm->addChild(menu);
+	
+	menu->getBackground()->setColor(1.0f, 1.0f, 1.0f, 0.0f);
+	menu->resizePercent(100.0f);
+
+	osg::Node* model = osgDB::readNodeFile("osgcool.osg");
+
+	model->setNodeMask(MASK_3D);
+
+	return osgWidget::createExample(viewer, wm, model);
+}