CComboBox::GetTopIndex
Retrieves the zero-based index of the first visible item in the list-box portion of the combo box.
int GetTopIndex( ) const;
Return Value
The zero-based index of the first visible item in the list-box portion of the combo box if successful, CB_ERR otherwise.
Remarks
Initially, item 0 is at the top of the list box, but if the list box is scrolled, another item may be at the top.
Example
// Want an item in the bottom half to be the first visible item.
int nTop = m_pComboBox->GetCount() / 2;
if (m_pComboBox->GetTopIndex() < nTop)
{
m_pComboBox->SetTopIndex(nTop);
ASSERT(m_pComboBox->GetTopIndex() == nTop);
}
Requirements
Header: afxwin.h