一、開發環境

編譯器：VS2013

.Net版本：4.5

二、開發過程

1.畫一條直線

private void btnDrawLine_Click(object sender, EventArgs e)
{
    //創建一個畫圖圖面
    Graphics g = this.CreateGraphics();
    //創建一隻筆
    Pen pen = new Pen(Brushes.Red);
    //直線的兩個坐標
    Point pointStart = new Point(10, 10);
    Point pointEnd = new Point(50, 50);
    //開始畫
    g.DrawLine(pen, pointStart, pointEnd);
}

2.畫一個矩形

private void btnDrawRectangle_Click(object sender, EventArgs e)
{
    //創建一個畫圖圖面
    Graphics g = this.CreateGraphics();
    //創建一隻筆
    Pen pen = new Pen(Brushes.DeepSkyBlue);
    //確定矩形的起點、長和高
    g.DrawRectangle(pen, 50, 50, 60, 30);
}

3.畫一個字元串

private void btnDrawString_Click(object sender, EventArgs e)
{
    Graphics g = this.CreateGraphics();
    Font font = new Font("華為宋體", 12);
    //Point一樣，只是值是浮點類型
    PointF point = new PointF(50, 50);
    g.DrawString("我是Kimisme", font, Brushes.Coral, point);
}

4.畫一個扇形

private void btnDrawSector_Click(object sender, EventArgs e)
 {
     Graphics g = this.CreateGraphics();
     g.DrawPie(new Pen(Brushes.Green),
         new Rectangle(new Point(100, 70),
             new Size(50, 50)), 60, 90);
 }