MFC中的一个简单问题

[genganpeng]

void CGDIplusDemoView::OnMouseMove(UINT nFlags,CPoint pos) {
	if (nFlags != MK_LBUTTON ) {return;}
	Graphics graphics(this->m_hWnd);
	//this->RedrawWindow();
	SolidBrush solidBrush(Color(255,255,0,0));
	PointF points[] = {
		PointF(20,20),
		PointF(160,100),
		PointF(140,60),
		PointF(60,100)
	};
	GraphicsPath path;
	path.AddClosedCurve(points,4);
	Matrix matrix;
	matrix.Scale(2,1);
	path.Transform(&matrix);
	Region pathRegion(&path);
	graphics.FillRegion(&solidBrush,&pathRegion);
	Point testPoint(pos.x,pos.y);
	if (pathRegion.IsVisible(testPoint,&graphics)) {return;}
	SolidBrush brush(Color(255,0,0,0));
	graphics.FillEllipse(&brush,testPoint.X - 4,testPoint.Y - 4,8,8);
}
// CGDIplusDemoView 绘制

void CGDIplusDemoView::OnDraw(CDC *pDC) {
}	

这是MFC中的CGDIplusDemoView.cpp中的两个函数，如何才能将OnMouseMove中的代码实现到输出界面上啊？？

[genganpeng]

顶一个！！！

[lwykj]

CDC* dc= GetDC();
再dc 上面画
ReleaseDC(dc);

[ouyh12345]

获得输出设备的hwnd，然后用hdc来画