橡皮擦技术画线程序-C#版

最新推荐文章于 2023-02-16 22:30:00 发布

zzh87615

最新推荐文章于 2023-02-16 22:30:00 发布

阅读量3k

点赞数

分类专栏： C/C# 文章标签： object

C/C# 专栏收录该内容

13 篇文章

订阅专栏

本文介绍了一个使用C#实现的可逆绘制线条功能。当鼠标按下时记录起始点，移动鼠标时实时绘制从起始点到当前点的线条，并在鼠标抬起时完成绘制并固定线条位置。通过这种方法可以轻松地在Windows表单中创建交互式的绘图应用。

摘要生成于 C知道，由 DeepSeek-R1 满血版支持，前往体验 >

Point originalPoint = new Point(); Point lastPoint = new Point(); bool mouseIsDown; private void Form1_MouseDown(object sender, MouseEventArgs e) { mouseIsDown = true; originalPoint.X = e.X; originalPoint.Y = e.Y; lastPoint.X = -1; lastPoint.Y = -1; } private void MyDrawReversibleLine(Point point1, Point point2) { point1 = PointToScreen(point1); point2 = PointToScreen(point2); ControlPaint.DrawReversibleLine(point1, point2, Color.Yellow); } private void Form1_MouseUp(object sender, MouseEventArgs e) { mouseIsDown = false; if (lastPoint.X != -1) { Point currentPoint = new Point(e.X, e.Y); MyDrawReversibleLine(originalPoint, lastPoint); } lastPoint.X = -1; lastPoint.Y = -1; originalPoint.X = -1; originalPoint.Y = -1; } private void Form1_MouseMove(object sender, MouseEventArgs e) { Point currentPoint = new Point(e.X, e.Y); if (mouseIsDown) { if (lastPoint.X != -1) { MyDrawReversibleLine(originalPoint, lastPoint); } lastPoint = currentPoint; MyDrawReversibleLine(originalPoint, currentPoint); } }