我在PictureBox1上画了一个框我怎么把这框清除掉呢?
主要是想做成,截屏软件在屏幕上选图形的功能。那个有例子可以发个给我谢谢。private System.Windows.Forms.PictureBox pictureBox1;private void btn_Click(object sender, System.EventArgs e)
{
Graphics dc = pictureBox1.CreateGraphics();
this.pictureBox1.Show();
Pen BluePen = new Pen( Color.Blue ,3);
dc.DrawRectangle( BluePen,0,0,50,50 );
Pen RedPen = new Pen( Color.Red ,2 );
dc.DrawEllipse( RedPen,0,50,80,60); }
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主要是想做成,截屏软件在屏幕上选图形的功能。那个有例子可以发个给我谢谢。private System.Windows.Forms.PictureBox pictureBox1;private void btn_Click(object sender, System.EventArgs e)
{
Graphics dc = pictureBox1.CreateGraphics();
this.pictureBox1.Show();
Pen BluePen = new Pen( Color.Blue ,3);
dc.DrawRectangle( BluePen,0,0,50,50 );
Pen RedPen = new Pen( Color.Red ,2 );
dc.DrawEllipse( RedPen,0,50,80,60); }
邮件:[email protected]
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