add initial examples, replacing the 'Demos/Demos3'. Will make it work cross-platform, OpenGL3/OpenGL2 and add more examples to it.

examples/ThirdPartyLibs/Gwen/Controls/VerticalSlider.cpp

@@ -0,0 +1,48 @@
+/*
+	GWEN
+	Copyright (c) 2010 Facepunch Studios
+	See license in Gwen.h
+*/
+
+
+#include "Gwen/Controls/Slider.h"
+#include "Gwen/Controls/VerticalSlider.h"
+
+using namespace Gwen;
+using namespace Gwen::Controls;
+using namespace Gwen::ControlsInternal;
+
+
+GWEN_CONTROL_CONSTRUCTOR( VerticalSlider )
+{
+}
+
+float VerticalSlider::CalculateValue()
+{
+	return  1 - (float)m_SliderBar->Y() / (float)( Height() - m_SliderBar->Height() );
+}
+
+void VerticalSlider::UpdateBarFromValue()
+{
+	m_SliderBar->MoveTo( m_SliderBar->X(), ( Height() - m_SliderBar->Height() ) * ( 1 - m_fValue ));
+}
+
+
+void VerticalSlider::OnMouseClickLeft( int x, int y, bool bDown )
+{
+	m_SliderBar->MoveTo( m_SliderBar->X(), CanvasPosToLocal( Gwen::Point( x, y ) ).y - m_SliderBar->Height() * 0.5 );
+	m_SliderBar->OnMouseClickLeft( x, y, bDown );
+	OnMoved( m_SliderBar );
+}
+
+
+void VerticalSlider::Layout(Skin::Base* /*skin*/)
+{
+	m_SliderBar->SetSize( Width(), 10 );
+}
+
+
+void VerticalSlider::Render( Skin::Base* skin )
+{
+	skin->DrawSlider( this, false, m_bClampToNotches ? m_iNumNotches : 0, m_SliderBar->Height() );
+}