C#控件picturebox實現(xiàn)畫圖功能

2020-01-24 00:14:51

字體：大中小

供稿：網(wǎng)友

本文實例為大家分享了C# picturebox實現(xiàn)畫圖功能的具體代碼，供大家參考，具體內(nèi)容如下

在Form上添加一個pictureBox,一個button控件

如圖所示：

這樣我們的繪畫面板就弄好了，把pictureBox的dock屬性設置為fill，按鍵為清屏的作用。

private Point p1, p2;//定義兩個點（啟點，終點）private static bool drawing=false;//設置一個啟動標志private void pictureBox1_MouseDown(object sender, MouseEventArgs e)    {               p1 = new Point(e.X, e.Y);       p2 = new Point(e.X, e.Y);        drawing = true;          } private void pictureBox1_MouseUp(object sender, MouseEventArgs e)    {      drawing = false;    }private void pictureBox1_MouseMove(object sender, MouseEventArgs e)     {           Graphics g = pictureBox1.CreateGraphics();      if(e.Button ==MouseButtons.Left)      {        if (drawing)        {          //drawing = true;          Point currentPoint = new Point(e.X, e.Y);          g.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.AntiAlias;//消除鋸齒          g.DrawLine(new Pen(Color.Blue, 2), p2,currentPoint);                    p2.X = currentPoint.X;          p2.Y = currentPoint.Y;        }       }          }//清屏操作private void button1_Click(object sender, EventArgs e){ Graphics g = pictureBox1.CreateGraphics(); g.Clear(Color.White);}