´´½¨Graphics¶ÔÏóC#

//Graphics gp = e.Graphics;//´´½¨GDI¶ÔÏó£¬PaintʼþÖС£ Graphics gp = this.CreateGraphics();////´´½¨GDI¶ÔÏó·½·¨2 Pen p1 = new Pen(Color.Blue, 5);//¸Ö±ÊÏßÌõ5°÷À¶É« Rectangle