以下哪些方式能获得Graphics对象obj?
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以下哪些方式能获得Graphics对象obj?
A.Graphics obj = 窗体或控件名.CreateGraphics();
B.private void 窗体或控件名_Paint(object sender, PaintEventArgs e){ Graphics obj = e. Graphics; }
C.Bitmap map = new Bitmap(宽,高); Graphics obj = Graphics.FromImage(map); obj.DrawImage(map, x坐标, y坐标);
D.Graphics obj = new Graphics(宽,高);

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