移动用户控件时出现图形错误 (c# win7)

Question

我在移动控件时在窗体上绘制用户控件时遇到问题。向右或向下移动控件的背景会变短。

我的控制

public class DotPanel : Control
{
    public DotPanel() 
    {
        this.DoubleBuffered = true;
    }
    protected override void OnPaint(PaintEventArgs e)
    {
        e.Graphics.FillRectangle(new SolidBrush(Color.Yellow),new Rectangle(this.Location,this.Size));
    }
}

主窗体只是将用户控件放在指定位置并提供鼠标 down/move/up 事件来进行移动

基本上是这样>>

private void Form1_MouseDown(object sender, MouseEventArgs e)
    {
        mouseX = e.X;
        mouseY = e.Y;
        panelX = dp1.Left;
        panelY = dp1.Top;

        moving = true;
    }

private void Form1_MouseMove(object sender, MouseEventArgs e)
    {
        if (moving)
        {
            dp1.Left = panelX + e.X - mouseX;
            dp1.Top = panelY + e.Y - mouseY;
            this.Invalidate(true);
        }
    }

 private void Form1_MouseUp(object sender, MouseEventArgs e)
    {
        moving = false;
        this.Invalidate(true);

    }

提前感谢您提供任何线索...

Answer 1

覆盖的油漆是问题所在。将 this.Size 和 this.Location 换成 ClientRectangle.Size 和 ClientRectangle.Location 有效...

移动用户控件时出现图形错误 (c# win7)

Graphical error while moving usercontrol (c# win7)

c#

user-controls

visual-studio-2010

windows-7