自绘TabControl
相关参考:
http://www.microsoft.com/msj/0599/c/c0599.aspx
http://topic.csdn.net/t/20060428/22/4722100.html
http://www.microsoft.com/msj/0499/c/c0499.aspx
http://www.microsoft.com/msj/0599/c/c0599.aspx
http://topic.csdn.net/t/20060428/22/4722100.html
http://www.microsoft.com/msj/0499/c/c0499.aspx