The CellButtonClick event is fired after the user has released the left mouse button over a cell of button type.  Use the CellHasButton property to specify whether a cell is of button type. The CellButtonClick event notifies your application that user presses a cell of button type. Use the Caption property to specify the button's caption.

The following VB sample  prints the caption of the cell being clicked:

Private Sub List1_CellButtonClick(ByVal Index As Long, ByVal ColIndex As Long)
    Debug.Print List1.Items.Caption(Index, ColIndex)
End Sub

The following C++ sample  prints the caption of the cell being clicked:

void OnCellButtonClickList1(long ItemIndex, long ColIndex) 
{
	CItems items = m_list.GetItems();
	CString strCaption = V2S( &items.GetCaption( ItemIndex, COleVariant( ColIndex ) ) );
	OutputDebugString( strCaption );
}

where the V2S function converts a VARIANT expression to a string expression,

static CString V2S( VARIANT* pv, LPCTSTR szDefault = _T("") )
{
	if ( pv )
	{
		if ( pv->vt == VT_ERROR )
			return szDefault;

		COleVariant vt;
		vt.ChangeType( VT_BSTR, pv );
		return V_BSTR( &vt );
	}
	return szDefault;
} 

The following VB.NET sample  prints the caption of the cell being clicked:

Private Sub AxList1_CellButtonClick(ByVal sender As Object, ByVal e As AxEXLISTLib._IListEvents_CellButtonClickEvent) Handles AxList1.CellButtonClick
    With AxList1.Items
        Debug.Write(.Caption(e.itemIndex, e.colIndex))
    End With
End Sub

The following C# sample  prints the caption of the cell being clicked:

private void axList1_CellButtonClick(object sender, AxEXLISTLib._IListEvents_CellButtonClickEvent e)
{
	System.Diagnostics.Debug.WriteLine(axList1.Items.get_Caption(e.itemIndex, e.colIndex).ToString());
}

The following VFP sample  prints the caption of the cell being clicked:

*** ActiveX Control Event ***
LPARAMETERS itemindex, colindex

with thisform.List1.Items
	wait window nowait .Caption(itemindex,colindex)
endwith