MFC程序中父窗体捕捉子窗体被点击的消息

只需要重载父窗体的OnCommand(WPARAM wParam, LPARAM lParam) 函数，而不需要重载子窗体的OnLButtonUp(UINT nFlags, CPoint point) 函数
典型地如下操作即可
BOOL CDiaBoxDlg::OnCommand(WPARAM wParam, LPARAM lParam)
{
    // TODO: Add your specialized code here and/or call the base class

    switch(HIWORD(wParam))
    {
    case BN_CLICKED:
        TRACE("CLICKED!/n");

        break;

    default:
        break;
    }

    return CDialog::OnCommand(wParam, lParam);
}