本文介绍了画上picturebox1的油漆的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!

问题描述

你好,我想当我点击button1在picturebox1的油漆上画一个椭圆。

hello, i want when i click on button1 draw a ellipse on paint of picturebox1.

推荐答案


private bool drawIt = false;
private void myButton_Click(object sender, EventArgs e)
    {
    drawIt = !drawIt;
    myPictureBox.Invalidate();
    }

private void myPictureBox_Paint(object sender, PaintEventArgs e)
    {
    if (drawIt)
        {
        e.Graphics.DrawEllipse(Pens.Red, 10, 10, myPictureBox.Width - 20, myPictureBox.Height - 20);
        }
    }


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09-05 13:46
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