dockpanelsuite的一些修改

一个可以做出类似VS的免费控件，下载网址：http://sourceforge.net/projects/dockpanelsuite/

目前版本为2.3.1

方便应用，做了一些修改：

1.修改双击关闭（在DockPaneStripBase的WndProc方法里）

else if (m.Msg == (int)Win32.Msgs.WM_LBUTTONDBLCLK)
{
    base.WndProc(ref m);
   int index = GetHitTest();

if (DockPane.DockPanel.AllowRedocking && index != -1)
{
   IDockContent content = Tabs[index].Content;
   try {  

       //注释为原句 
      //  content.DockHandler.IsFloat = !content.DockHandler.IsFloat;   

     //替换为           

         content.DockHandler.Close();
       }   
  catch  {   }
}
return;
}

2.解决背景图片的问题（DockPanel的OnPaint方法里） 

2.2版本修改方法

protected override void OnPaint(PaintEventArgs e)
{

   base.OnPaint(e);
   //注释以下这两句
  //Graphics g = e.Graphics;
  //  g.FillRectangle(SystemBrushes.AppWorkspace, ClientRectangle);
}

2.3版本修改方法

protected override void OnPaint(PaintEventArgs e)
  {
      base.OnPaint(e);
      if (BackgroundImage != null)
          return;
      if (DockBackColor == BackColor) return;
      Graphics g = e.Graphics;
      SolidBrush bgBrush = new SolidBrush(DockBackColor);
      g.FillRectangle(bgBrush, ClientRectangle);
  }

3.解决背景色无法改变问题(VS2005DockPaneStrip的OnPaint方法里)，在2.3中不需要修改，此处为2.2的修改方法

protected override void OnPaint(PaintEventArgs e)
{
    if (Appearance == DockPane.AppearanceStyle.Document)
    {
    //注释以下这两句
    //if (BackColor != SystemColors.Control)
    //    BackColor = SystemColors.Control;
    }
    else
    {
    if (BackColor != SystemColors.ControlLight)
        BackColor = SystemColors.ControlLight;
    }
    base.OnPaint (e);
    CalculateTabs();
    if (Appearance == DockPane.AppearanceStyle.Document 

         && DockPane.ActiveContent != null)
    {
        if (EnsureDocumentTabVisible(DockPane.ActiveContent, false))
            CalculateTabs();
    }

    DrawTabStrip(e.Graphics);
}

4.改变标签颜色（VS2005DockPaneStrip）2.3版本没有这个了，已经可以自定义标签颜色，包括渐变标签颜色，此处为2.2版本修改方法

private static Brush BrushDocumentActiveBackground
{
    get { return new LinearGradientBrush(new Rectangle(0, 0, 1, 1), 
          Color.FromArgb(232, 242, 254), 
          Color.FromArgb(232, 242, 254), 1);/*SystemBrushes.ControlLightLight;*/ }
}

private static Brush BrushDocumentInactiveBackground
{
    get { return new LinearGradientBrush(new Rectangle(0, 0, 1, 1), 
         Color.FromArgb(173, 193, 220), 
         Color.FromArgb(173, 193, 220), 1); } //SystemBrushes.ControlLight; }
}