struct GLLock{
	private:
		GLCtrl& ctrl;
		bool swap;
	public:
		GLLock(GLCtrl& glCtrl, bool swapBuffer = false);
		~GLLock();
};

class GLCtrl : public Ctrl {
	typedef GLCtrl CLASSNAME;
	friend class GLLock;
//*************************
//}

GLLock::GLLock(GLCtrl& glCtrl, bool swapBuffer) : ctrl(glCtrl), swap(swapBuffer)
{
	HWND hwnd = ctrl.pane.GetHWND();
	HDC hDC = GetDC(hwnd);
	wglMakeCurrent(hDC, s_openGLContext);
}

GLLock::~GLLock()
{
	if(swap){
		HWND hwnd = ctrl.pane.GetHWND();
		HDC hDC = GetDC(hwnd);
		SwapBuffers(hDC);
	}else{
		glFlush();
	}
	wglMakeCurrent(NULL, NULL);
}

GLLock::GLLock(GLCtrl& glCtrl, bool swapBuffer) : ctrl(glCtrl), swap(swapBuffer)
{
	glXMakeCurrent(s_Display, ctrl.win, s_GLXContext);
}

GLLock::~GLLock()
{
	if(swap){
		glXSwapBuffers(s_Display, win);
	}else{
		glFlush();
	}
	glXMakeCurrent(s_Display, None, NULL);
}