CListBox::GetItemHeight

Статья
10/16/2008

Determines the height of items in a list box.

int GetItemHeight(
   int nIndex 
) const;

Параметры

nIndex
Specifies the zero-based index of the item in the list box. This parameter is used only if the list box has the LBS_OWNERDRAWVARIABLE style; otherwise, it should be set to 0.

Возвращаемое значение

The height, in pixels, of the items in the list box. If the list box has the LBS_OWNERDRAWVARIABLE style, the return value is the height of the item specified by nIndex. If an error occurs, the return value is LB_ERR.

Пример

// Set the height of every item so the item
// is completely visible.
CString str;
CSize   sz;
CDC*    pDC = m_myListBox.GetDC();
for (int i=0;i < m_myListBox.GetCount();i++)
{
   m_myListBox.GetText( i, str );
   sz = pDC->GetTextExtent(str);

   // Only want to set the item height if the current height
   // is not big enough.
   if (m_myListBox.GetItemHeight(i) < sz.cy)
      m_myListBox.SetItemHeight( i, sz.cy );
}
m_myListBox.ReleaseDC(pDC);