Changing row height in owner drawn control

Here's a work around that forces the WM_MEASUREITEM message to be generated.

Step 1: Add handler for WM_SETFONT

For some reason, the Class Wizard did not have the WM_SETFONT message in its list of window messages. You will have to add the message map entry yourself. It is important to place the entries outside of the block used by the Class Wizard, otherwise the next you make any change with the wizard, our manual changes will be lost.

// In the header file
	//{{AFX_MSG(CMyListCtrl)
	:
	:
	//}}AFX_MSG
	afx_msg LRESULT OnSetFont(WPARAM wParam, LPARAM);
	afx_msg void MeasureItem ( LPMEASUREITEMSTRUCT lpMeasureItemStruct );
	DECLARE_MESSAGE_MAP()


//////////////////////////////////////////////////////////////////////
// In the cpp file
BEGIN_MESSAGE_MAP(CMyListCtrl, CListCtrl)
	//{{AFX_MSG_MAP(CMyListCtrl)
	:
	:
	//}}AFX_MSG_MAP
	ON_MESSAGE(WM_SETFONT, OnSetFont)
	ON_WM_MEASUREITEM_REFLECT( )
END_MESSAGE_MAP()


LRESULT CMyListCtrl::OnSetFont(WPARAM wParam, LPARAM)
{
	LRESULT res =  Default();

	CRect rc;
	GetWindowRect( &rc );

	WINDOWPOS wp;
	wp.hwnd = m_hWnd;
	wp.cx = rc.Width();
	wp.cy = rc.Height();
	wp.flags = SWP_NOACTIVATE | SWP_NOMOVE | SWP_NOOWNERZORDER | SWP_NOZORDER;
	SendMessage( WM_WINDOWPOSCHANGED, 0, (LPARAM)&wp );

	return res;
}

Step 2: Add handler for WM_MEASUREITEM

void CMyListCtrl::MeasureItem ( LPMEASUREITEMSTRUCT lpMeasureItemStruct )
{
	LOGFONT lf;
	GetFont()->GetLogFont( &lf );

	if( lf.lfHeight < 0 )
		lpMeasureItemStruct->itemHeight = -lf.lfHeight; 
	else
		lpMeasureItemStruct->itemHeight = lf.lfHeight; 
}