实现效果:
知识运用:
Graphics对象的DrawLine方法
public void DrawLine (Pen pen, Point pt1,Point pt2)
public void DrawLine (Pen pen, int x1,int y1,int x2,int y2)
实现代码:
private void Form1_MouseDown(object sender, MouseEventArgs e) { Graphics g = this.CreateGraphics(); g.DrawLine(new Pen(Color.Black,2),new Point(0,e.Y),new Point(this.Width,e.Y)); g.DrawLine(new Pen(Color.Black, 2), new Point(e.X, 0), new Point(e.X,this.Height)); }