some work into intercepting mouse events in OpenGL window

Change-Id: I46dcfed7d5398d994c68ed7cfe4408f9f5719bf1

include/vcl/openglwin.hxx

@@ -27,6 +27,7 @@ public:
     OpenGLContext* getContext();
 
     virtual void Paint(const Rectangle&) SAL_OVERRIDE {}
+    virtual void MouseButtonDown( const MouseEvent& rMEvt ) SAL_OVERRIDE;
 
 private:
     boost::scoped_ptr<OpenGLWindowImpl> mpImpl;

vcl/source/window/openglwin.cxx

@@ -9,6 +9,7 @@
 
 #include <vcl/openglwin.hxx>
 #include <vcl/opengl/OpenGLContext.hxx>
+#include <vcl/event.hxx>
 
 class OpenGLWindowImpl
 {
@@ -44,4 +45,12 @@ OpenGLContext* OpenGLWindow::getContext()
     return mpImpl->getContext();
 }
 
+void OpenGLWindow::MouseButtonDown( const MouseEvent& rMEvt )
+{
+    Point aPoint = rMEvt.GetPosPixel();
+
+    Color aColor = GetPixel(aPoint);
+    SAL_WARN("vcl.opengl", aColor.GetColor());
+}
+
 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */