学步园

//TITLE:
//    自绘按钮的实现
//AUTHOR:
//    norains
//DATE:
//    Saturday  12-January-2008
//Environment:
//    VS2005 + SDK-WINCE5.0-MIPSII  
//    EVC + SDK-WINCE5.0-MIPSII 
//========================================================================

    自绘按钮的实现并不难,只不过如果是在非MFC类库中实现,却是显得有点麻烦,或是说,更需要一点小技巧.
   
    文章打算在CMainWnd窗口类中实现一个自绘按钮,为了方便讲解以及突出重点,CMainWnd直接派生于CWndBase类.关于CWndBase类的信息,可以在此找到:http://blog.csdn.net/norains/archive/2008/01/12/2040109.aspx
   
    首先我们先要创建一个按钮,我将它命名为m_hBnExit:
 

    m_hBnExit = CreateWindowEx(WS_EX_TOPMOST,
                                TEXT("BUTTON"),
                                TEXT(""),
                                BS_PUSHBUTTON |  WS_VISIBLE | WS_CHILD | BS_OWNERDRAW ,
                                POS_EXIT.left,
                                POS_EXIT.top,
                                POS_EXIT.right - POS_EXIT.left,