Coloring Tab Control

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Introduction

Tabcontrol is not at all unknown to windows developers. Microsoft included this control from Visual Studio to Visual Studio.NET SDK to enhance developers productivity and end users better experience. I agree that our windows development must flow some standard to give better user experience. Here I am trying to give little more enhancement on control appearance if and only if developer want to do it.

Background

This article is small in size and can apply in your different application only if it must be a winform development. You can refer this article to update your tab control's appearances in your parent window.

By default or through any properties the existing VS.NET SDK won't support features which will enhance the appearances of tab pages like changing font appearances , color,caption back color etc. Here what I am trying to do is , override a little and got into solution. So you can use this idea to enhance your product or project.

If you feel this is good then don't forget to vote and give put your valuable suggestions.

If you check the property list of tabcontrol. You will came to to about DrawMode property. DrawMode property decides that how tabpages are drawn in your application. If you check the values then you will came to that there is two values are there which is assignable for the property DrawMode.

DrawMode Enumeration

Normal

This enumerated value will specify that operating system will decide to draw on behalf of developers.

OwnerDrawn

This enumerated value will specify that developer is responsible for drawing the appearance of tab page.

Suppose if you want to draw by yourself then you need to define event handler for TabControl's DrawItem Event.

Here also I am doing the same thing. Suppose it you want to change the appearance of tabpage of any tabcontrol then you need to set

1. DrawMode property to OwnerDrawFixed.
2. Override the DrawItem event handler definition.

Source Code

private void tabControl1_DrawItem(object sender, 
  System.Windows.Forms.DrawItemEventArgs e)
   {
       try
        {
          //This line of code will help you to 
          //change the apperance like size,name,style.
          Font f;
          //For background color
          Brush backBrush;
          //For forground color
          Brush foreBrush;
          //This construct will hell you to decide 
          //which tab page have current focus
          //to change the style.
          if(e.Index == this.tabControl1.SelectedIndex)
          {
          //This line of code will help you to 
          //change the apperance like size,name,style.
          f = new Font(e.Font, FontStyle.Bold | FontStyle.Bold);
          f = new Font(e.Font,FontStyle.Bold);
          backBrush = new System.Drawing.SolidBrush(Color.DarkGray);
          foreBrush = Brushes.White;
        }
        else
        {
          f = e.Font;
          backBrush = new SolidBrush(e.BackColor); 
          foreBrush = new SolidBrush(e.ForeColor);
        }
          //To set the alignment of the caption.
          string tabName = this.tabControl1.TabPages[e.Index].Text;
          StringFormat sf = new StringFormat();
          sf.Alignment = StringAlignment.Center;
          //Thsi will help you to fill the interior portion of
          //selected tabpage.
//Continue.........
  }
}

Note

Full source code with an example is given with this article.

This article, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)