*****MdiContainer中绘图的问题*****
想在多文档容器得底板上画图,于是重载OnPaint:
protected override void OnPaint(System.Windows.Forms.PaintEventArgs e)
{
Graphics g;
g = Graphics.FromHwnd(this.MdiParent.Handle);
Pen pn = new Pen(Color.Blue,2);
g.DrawLine(pn,20,90,55,70);
p.Dispose();
g.Dispose();
}
但运行时总是出错.望高手指教!