system.drawing使用小结

system.drawing下面包括:
system.drawing.drawing2d
system.drawing.imaging
system.drawing.printing
system.drawing.designer
system.drawing.text
首先是椭圆的绘制

  Brush solidBrush = new SolidBrush(Color.FromArgb(255,255,0,0));
              e.Graphics.FillEllipse(solidBrush,0,0,100,60);

矩形的绘制

 Pen blackPen = new Pen(Color.Black,3);
              int x = 210;
              int y = 220;
              int width = 200;
              int height = 100;
              e.Graphics.DrawRectangle(blackPen,x,y,width,height);

图形填充图象

 Image image = new Bitmap(@"F:\WindowsExample\WindowsExample\man.gif");
        //初始化使用指定的图象填充Brush TextureBrush
        Brush tBrush = new TextureBrush(image);
        Pen blackPen = new Pen(Color.Black);
        e.Graphics.FillRectangle(tBrush,new Rectangle(0,0,200,200));
        e.Graphics.DrawRectangle(blackPen,new Rectangle(0,0,200,200));

线性变化的显示

 LinearGradientBrush linepen = new LinearGradientBrush(new Point(0, 10), new Point(200, 10), Color.FromArgb(255, 255, 0, 0), Color.FromArgb(255, 0, 0, 255));
        e.Graphics.FillRectangle(linepen,0,155,300,20);

区域图像的绘制

 Point[] points2 ={ new Point(75,0),new Point(100,50),new Point(150,50),new Point(112,75),new Point(150,150),new Point(75,100),new Point(0,150),new Point(37,75),new Point(0,50),new Point(50,50)};
            //用点针构造一个路径
            GraphicsPath path = new GraphicsPath();
            path.AddLines(points2);
            //用路径构造一个线性梯度刷
            PathGradientBrush pthBrush = new PathGradientBrush(path);
            //在路径的中部设置颜色为红色
            pthBrush.CenterColor = Color.FromArgb(255,255,0,0);
            Color[] colors =
           { Color.FromArgb(255, 0, 0, 0),
             Color.FromArgb(255, 0, 255, 0),
             Color.FromArgb(255, 0, 255, 0),
             Color.FromArgb(255, 0, 255, 0), 
             Color.FromArgb(255, 0, 255, 0),
             Color.FromArgb(255, 0, 255, 0), 
             Color.FromArgb(255, 0, 255, 0),
             Color.FromArgb(255, 0, 255, 0),
             Color.FromArgb(255, 0, 255, 0), 
             Color.FromArgb(255, 0, 255, 0),};
            pthBrush.SurroundColors = colors;
            e.Graphics.FillPath(pthBrush,path);

结果为

接下来是文本的绘制

FontFamily fontfamily = new FontFamily("Times New Roman");//字体族
            Font font = new Font(fontfamily,24,FontStyle.Bold,GraphicsUnit.Pixel);
            //位置(30,10)处显示
            PointF pointf = new PointF(390,100);
            SolidBrush solidbrush = new SolidBrush(Color.FromArgb(25,88,255));
            e.Graphics.DrawString("Hello",font,solidbrush,pointf);

在矩形中显示字符

 String MyText = "Draw text in a rectangle by passing a recF to the Drawstring method";
            FontFamily font2 = new FontFamily("Arial");
            Font font3 = new Font(font2,12,FontStyle.Bold,GraphicsUnit.Point);
            Rectangle rect = new Rectangle(30,10,300,150);
            SolidBrush brush = new SolidBrush(Color.FromArgb(255,88,255));
            e.Graphics.DrawString(MyText,font3,brush,rect);
            Pen pen = Pens.Black;
            e.Graphics.DrawRectangle(pen,rect);  

关于图形的扭转

Graphics graphics = e.Graphics;
            Pen pen = new Pen(Color.Red);
            graphics.ResetTransform();
            graphics.RotateTransform(20);//通用转换
            graphics.DrawEllipse(pen, 0, 0, 100, 50);
            graphics.PageUnit = GraphicsUnit.Millimeter;//页面的单位转换
            graphics.DrawEllipse(pen,0,0,100,50);

以上是一些鄙人学习的一些基本的东西，我会不断的补充的哦！