在CWnd派生窗口中动态创建CheckBox,RadioButton, 去除控件背景(WM_PAINT)

在CWnd派生窗口中动态创建CheckBox,RadioButton, 去除控件背景(WM_PAINT)

在非Dialog窗口中动态创建CheckBox, RadioButton 时， 总有默认的灰色背景， 想了许多方法都未能去除，到最后我只好自己处理WM_PAINT消息了， 郁闷!

template < class  BASE_CLASS >
class  CTransparentButton :  public  BASE_CLASS
{
public :
     virtual  LRESULT WindowProc(UINT message, WPARAM wParam, LPARAM lParam)
    {
         switch  (message)
        {
         case  WM_PAINT:
            {
                CPaintDC dc( this );
                CString iText;
                CRect boxRc, textRc;
                 int  wh  =   14 ;
                boxRc.SetRectEmpty();
                GetClientRect( & textRc);
                textRc.bottom = 20;
                boxRc.top  =  (( int )textRc.Height() / 2 ) - 7 ;
                textRc.left  =  boxRc.right  =  boxRc.bottom  =  boxRc.top + wh;
                textRc.left  +=   2 ;
                 switch (GetButtonStyle())
                {
                 case  BS_AUTOCHECKBOX:
                    {
                         if (GetCheck())
                            dc.DrawFrameControl( & boxRc,DFC_BUTTON,DFCS_CHECKED);            
                         else
                            dc.DrawFrameControl( & boxRc,DFC_BUTTON,DFCS_BUTTONCHECK);
                    }
                     break ;
                 case  BS_AUTORADIOBUTTON:
                    {
                         if (GetCheck())
                        {
                            dc.DrawFrameControl( & boxRc,DFC_BUTTON,DFCS_BUTTONRADIO);
                            boxRc.DeflateRect( 6 , 5 );
                            CBrush bkBrush(RGB( 0 , 0 , 0 ));
                            dc.SelectObject( & bkBrush);
                            dc.RoundRect( & boxRc,CPoint(boxRc.Width() / 2 ,boxRc.Height() / 2 ));
                        }
                         else
                            dc.DrawFrameControl( & boxRc,DFC_BUTTON,DFCS_BUTTONRADIO);
                    }
                     break ;
                }
                GetWindowText(iText);
                dc.SelectStockObject(DEFAULT_GUI_FONT);
                dc.DrawText(iText, & textRc,DT_VCENTER | DT_SINGLELINE);
            }
             break ;
        }
         return  BASE_CLASS::WindowProc(message, wParam, lParam);
    }
};

使用方法：
protected:
        CTransparentButton<CButton>  m_checkbox;
        CTransparentButton<CButton>  m_radiobtn1;
        CTransparentButton<CButton>  m_radiobtn2;

//-----------------------------------------------------------------
CCustomWnd::OnCreate(LPCREATESTRUCT lpCreateStruct)
{
        if (CWnd::OnCreate(lpCreateStruct) == -1)
                return -1;
         //创建控件
         m_checkbox.Create(_T("CheckBox"),WS_CHILD|WS_VISIBLE| BS_AUTOCHECKBOX,
                CRect(0,20,80,40), this, IDC_CHECKBOX1);
         m_radiobtn1.Create(_T("RadioButton1"),WS_CHILD|WS_VISIBLE| BS_AUTORADIOBUTTON ,
                CRect(0,50,80,70), this, IDC_RADIOBTN1);
         m_radiobtn2.Create(_T("RadioButton2"),WS_CHILD|WS_VISIBLE| BS_AUTORADIOBUTTON ,
                CRect(0,80,80,100), this, IDC_RADIOBTN2);
         //....................
}