2012-03-13 82 views
1

在試圖創建一個圓角矩形的過程中,但決定從一些簡單的事情開始,在這種情況下是一個橢圓。不幸的是,當我將自定義控件拖放到Fprm1.cs [設計]上並嘗試調整其大小時,實際橢圓沒有任何反應。只有當我進入usercontrol [設計]並調整它的大小時,它纔會改變。如果有人能指出我出錯的地方,我將不勝感激。謝謝。調整用戶控件的大小

using System; 
using System.Collections.Generic; 
using System.ComponentModel; 
using System.Data; 
using System.Linq; 
using System.Text; 
using System.Windows.Forms; 
using System.Drawing; 
using System.Drawing.Drawing2D; 

namespace CustomPbar 
{ 
    public partial class Pbar : UserControl 
    { 
     GraphicsPath path = new GraphicsPath(); 

     public Pbar() 
     { 
      InitializeComponent(); 
      path.AddEllipse(0, 0, this.ClientSize.Width, this.ClientSize.Height); 
      this.Region = new Region(path); 

      this.BackColor = SystemColors.ControlDarkDark; 
     } 

     private void MyForm_Layout(object sender, System.Windows.Forms.LayoutEventArgs e) 
     { 
      if (this.Region != null) 
      { 
       this.Region.Dispose(); 
       this.Region = null; 
      } 

      path.AddEllipse(0, 0, this.Width, this.Height); 
      this.Region = new Region(path); 
     } 
    } 
} 

回答

1

嘗試從Resize事件調用它:

protected override void OnResize(EventArgs e) { 
    using (GraphicsPath gp = new GraphicsPath()) { 
    gp.AddEllipse(this.ClientRectangle); 
    this.Region = new Region(gp); 
    } 

    base.OnResize(e); 
} 
+0

非常感謝。 – 2012-03-13 17:30:48