鼠标拖动控件改变位置并绘制虚框代码,CSharp代码库,德仔网

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【CSharp】鼠标拖动控件改变位置并绘制虚框

作者:jadeflute / 发布于2015/2/28/ 1026


	private Point downPoint;
	private Rectangle downRectangle;
	private Rectangle lastRectangle;
	
	private void pictureBox1_MouseDown(object sender, MouseEventArgs e)
	{
	 if (e.Button != MouseButtons.Left) return;
	 downPoint = e.Location;
	 downRectangle =
	 new Rectangle(0, 0, ((Control)sender).Width, pictureBox1.Height);
	 downRectangle.Offset(((Control)sender).PointToScreen(new Point(0, 0)));
	 ControlPaint.DrawReversibleFrame(
	 downRectangle, Color.White, FrameStyle.Thick);
	 lastRectangle = downRectangle;
	}
	
	private void pictureBox1_MouseMove(object sender, MouseEventArgs e)
	{
	 if (e.Button != MouseButtons.Left) return;
	 ControlPaint.DrawReversibleFrame(
	 lastRectangle, Color.White, FrameStyle.Thick);
	
	 Rectangle rectangle = downRectangle;
	 rectangle.Offset(e.X - downPoint.X, e.Y - downPoint.Y);
	 ControlPaint.DrawReversibleFrame(
	 rectangle, Color.White, FrameStyle.Thick);
	 lastRectangle = rectangle;
	}
	
	private void pictureBox1_MouseUp(object sender, MouseEventArgs e)
	{
	 if (e.Button != MouseButtons.Left) return;
	 ControlPaint.DrawReversibleFrame(
	 lastRectangle, Color.White, FrameStyle.Thick);
	
	 pictureBox1.Location = new Point(
	 ((Control)sender).Location.X + e.X - downPoint.X,
	 ((Control)sender).Location.Y + e.Y - downPoint.Y);
	}

试试其它关键字

　虚框　　拖动控件　　改变位置　

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