怎么在C#中利用picturebox控件实现画图功能
今天就跟大家聊聊有关怎么在C#中利用picturebox控件实现画图功能,可能很多人都不太了解,为了让大家更加了解,小编给大家总结了以下内容,希望大家根据这篇文章可以有所收获。
private Point p1, p2;//定义两个点(启点,终点) private static bool drawing=false;//设置一个启动标志 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;//消除锯齿 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); }
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