关于区域颜色反转的问题

[xiajian19820809]

CDC *pDC = GetDC();
CRgn r;
r.CreateRectRgn( XYpoint.x - 2, XYpoint.y - 2, XYpoint.x + 2, XYpoint.y + 2 );
pDC->InvertRgn( &r );

这段代码在C#中怎么处理?

[isjoe]

参考：Region类，功能很全的

[xiajian19820809]

自己帮顶下

[isjoe]

 [DllImport("gdi32.dll")]
        public static extern long InvertRgn(IntPtr hDC, IntPtr hRgn);   
        private void button1_Click(object sender, EventArgs e)
        {           
            using (Graphics gs = this.CreateGraphics())
            {
                Region reg = new Region(new Rectangle(10,10, 100,100));
                IntPtr hRgn = reg.GetHrgn(gs);
                IntPtr hDC = gs.GetHdc();
                
                InvertRgn(hDC, hRgn);
                gs.ReleaseHdc(hDC);
                reg.ReleaseHrgn(hRgn);
            }
}

[xiajian19820809]

非常感谢,效果实现.你QQ多少.

[isjoe]

[Quote=引用 4 楼 xiajian19820809 的回复:]
非常感谢,效果实现.你QQ多少.
[/Quote]

年事已高。不用QQ很多年