C / C++ / MFC

void TestDialog::OnOK() 
{
 
    static int n = 0;
 
    if(!m_cbSpaceTrack.m_hWnd) {
         
        CRect stButton1;
        stButton1.SetRect (20, 20, 140, 60);
         
        if ( !m_cbSpaceTrack.Create("BREAKTRACK",BS_PUSHBUTTON |WS_TABSTOP|WS_VISIBLE|WS_CHILD|WS_BORDER,stButton1,this,5000) )
        {
            // Failed to create a control.
            AfxMessageBox((LPCTSTR)"Failed to Create SPACETRACK Button1",MB_OK,0); 
        }
    }
    else {
        m_cbSpaceTrack.ShowWindow(SW_HIDE);
        switch (n) {
        case 0 :
            m_cbSpaceTrack.SetButtonStyle(BS_CHECKBOX, TRUE);
            ++n;
            break;
        case 1 :
            m_cbSpaceTrack.SetButtonStyle(BS_GROUPBOX, TRUE);
            m_cbSpaceTrack.ModifyStyle(0, WS_BORDER);
            ++n;
            break;
        case 2 :
            m_cbSpaceTrack.SetButtonStyle(BS_RADIOBUTTON, TRUE);
            m_cbSpaceTrack.ModifyStyle(WS_BORDER,0);
            n=0;
            break;
        case 3 :
            m_cbSpaceTrack.SetButtonStyle(BS_PUSHBUTTON, TRUE);
            m_cbSpaceTrack.ModifyStyle(0, WS_BORDER);
            n=0;
            break;
        default:
            break;
        }
        m_cbSpaceTrack.ShowWindow(SW_SHOW);
 
    }
 
    //CDialog::OnOK();
}

template <class Ty_, class A_ = std::allocator<Ty_> > class DLLTEST_API myclass {
public:
  std::vector<Ty_, A_> v;
...
};

class DLLTEST_API myclass {
public:
  std::vector<char> v;
...
};