C / C++ / MFC

hrepa wrote:

I don't know how to close all handles to a disk...

"Take only what you need and leave the land as you found it." - Native American Proverb

class CTextExtCtrl : public CWnd, public CColorMgr
{
...
...
};

bool CTextExtCtrl::Create( CWnd* pWndParent,
                            LPCTSTR lpctszMsg )
{
    ...
    // some code to store the lpctszMsg and assertions
    ...

    // Register the class
    CString csClass( AfxRegisterWndClass( CS_VREDRAW |
     CS_HREDRAW | CS_PARENTDC, LoadCursor( 0, IDC_ARROW )));

     // Creates the window
    CWnd::Create( csClass, _T( "" ), WS_CHILD |
     WS_VISIBLE, CRect( 0, 0, 0, 0 ), pWndParent, 0 ))

    ...
    // some codes to init tooltip, scrollbar, etc.
    ...
}

// Set the font to the buttons
// loop
    m_arBtn[nIdx].SetFont( &m_fontDlg );
// end of loop

// Create the message control
if( !m_textctrl.Create( this, ptcErrMessage ))
{
   // Failed to create the control
   return false;
}

// Set the font
m_textctrl.SetFont( &m_fontDlg );

CFont* pFont = &m_fontDlg;
m_textctrl.SetFont( pFont );
pFont = m_textctrl.GetFont();

void CTextExtCtrl::OnPaint()
{
    ...
    ...
    // Select the font to the dc
    CFont* pOldFont = dcMem.SelectObject( GetFont());
    // Draw the text
    dcMem.DrawText( m_csMsg, &rect, DT_WORDBREAK );
    // Some BitBlt functions...
    ...

WNDCLASS<code> must implement a handler to cache the HFONT.<br />
<br />
In your case, you can simply solve the problem by using a CFont object as a data member and select / deselect it in your dc whenever you need it, instead of using <code>GetFont()