ATL / WTL / STL

CMyWindow m_wnd;<br />
<br />
BOOL bRet = m_wnd.SubclassWindow(GetDlgItem(IDC_MY_CONTROL));<br />
ATLASSERT(bRet);

<br />
class CtrlPanel : public CScrollContainerImpl< CtrlPanel ><br />
{<br />
public:<br />
	DECLARE_WND_CLASS( _T("CtrlPanel") )<br />
<br />
	BEGIN_MSG_MAP_EX( CtrlPanel )		<br />
		MSG_WM_ERASEBKGND( OnEraseBkgnd )<br />
		CHAIN_MSG_MAP( CScrollContainerImpl< CtrlPanel > )		END_MSG_MAP()<br />
<br />
public:<br />
	CtrlPanel( void );<br />
	virtual ~CtrlPanel( void );<br />
<br />
        // not used when subclassing<br />
	HWND Create( HWND i_hParent );<br />
	<br />
	// CScrollContainerImpl interface<br />
	void UpdateLayout( void );<br />
	void DoPaint( CDCHandle i_DCHandle ) {};<br />
<br />
private:<br />
	// message handlers<br />
	LRESULT OnEraseBkgnd( HDC i_hDC );<br />
};<br />

<br />
// ...<br />
// ...<br />
// Position panel controls.<br />
// Compute ScrollsizeX and ScrollsizeY.<br />
// ...<br />
// ...<br />
<br />
SetScrollSize( std::max( 1, ScrollSizeX ), std::max( 1, ScrollSizeY ) );<br />