DrawArc 绘制圆弧
DrawBezier 绘制贝塞尔曲线
DrawBeziers绘制贝塞尔曲线组
DrawClosedCurve 绘制封闭曲线
DrawCurve 绘制曲线
DrawEllipse 绘制椭圆
DrawIcon 绘制图标
DrawIconUnstrectched 无缩放绘制图标
DrawImage 绘制图像
DrawImageUnscaled 无缩放绘制图像
Graphics对象绘制实心图形方法
FillClosedCurve 绘制实心封闭曲线
FillEllipse 封闭实心椭圆
FillPath:GraphicsPath对象
FillPie 绘制实心圆饼
FillPolygon 绘制多边形
FillRectange 绘制实心矩形
FillRectanges 绘制实心矩形组
FillRegion 绘制实心Region对象
DrawLine 绘制直线
