title: Moving a Control By Mouse
body: <p>I am going to Moving a Button with Mouse , Everything is ok , but when I move mouse on button window , left and top of the button ( top-left corner) will locate at cursor pos .</p>
  
  <p>I don't want this to occur . where is the bug in my code ?</p>
  
  <pre><code>private void button1_MouseDown(object sender, MouseEventArgs e)
  {
      if (e.Button == System.Windows.Forms.MouseButtons.Left)
      {
          clicked = true;
      }
  
  }
  
  private void button1_MouseMove(object sender, MouseEventArgs e)
  {
      if (clicked)
      {
          Point p = new Point();//in form coordinates
          p.X =  e.X + button1.Left;
          p.Y =  e.Y + button1.Top;
          button1.Left = p.X;
          button1.Top = p.Y ;
  
      }
  
  }
  
  private void button1_MouseUp(object sender, MouseEventArgs e)
  {
      clicked = false;   
  }
  </code></pre>