MFC控件背景透明设置 1

这种方法只适用于下面这些控件

• CTLCOLOR_BTN   Button control
• CTLCOLOR_DLG   Dialog box
• CTLCOLOR_EDIT   Edit control
• CTLCOLOR_LISTBOX   List-box control
• CTLCOLOR_MSGBOX   Message box
• CTLCOLOR_SCROLLBAR   Scroll-bar control
• CTLCOLOR_STATIC   Static control

// 1. 在对话框的头文件中加入
afx_msg HBRUSH OnCtlColor(CDC* pDC, CWnd* pWnd, UINT nCtlColor);

// 2. 在对话框的cpp文件中加入
BEGIN_MESSAGE_MAP(CtransparentDlg, CDialog)
    ON_WM_CTLCOLOR()
    //}}AFX_MSG_MAP
END_MESSAGE_MAP()

HBRUSH CtransparentDlg::OnCtlColor(CDC* pDC, CWnd* pWnd, UINT nCtlColor)
{
    HBRUSH   hBrush   =   CDialog::OnCtlColor(pDC,   pWnd,   nCtlColor);   

    if(nCtlColor == CTLCOLOR_STATIC)
    {
        pDC->SetBkMode(TRANSPARENT);   
        return   (HBRUSH)::GetStockObject(NULL_BRUSH);   
    }
    return hBrush;
}