CComboBox* CMySuperGrid::ShowList(int nItem, int nCol, CStringList *lstItems)
{
CString strFind = GetItemText(nItem, nCol);
//basic code start
CRect rect;
int offset = 0;
// Make sure that the item is visible
if( !EnsureVisible(nItem, TRUE)) return NULL;
GetSubItemRect(nItem, nCol, LVIR_BOUNDS, rect);
// Now scroll if we need to expose the column
CRect rcClient;
GetClientRect(rcClient);
if( offset + rect.left < 0 || offset + rect.left > rcClient.right )
{
CSize size;
size.cx = offset + rect.left;
size.cy = 0;
Scroll(size);
rect.left -= size.cx;
}
rect.left += offset;
rect.right = rect.left + GetColumnWidth(nCol);
if(rect.right > rcClient.right)
rect.right = rcClient.right;
//basic code end
rect.bottom += 10 * rect.Height();//dropdown area
DWORD dwStyle = WS_CHILD | WS_VISIBLE | WS_VSCROLL | WS_HSCROLL|CBS_DROPDOWNLIST | CBS_DISABLENOSCROLL;
CComboBox *pList = new CComboInListView(nItem, nCol, lstItems);
pList->Create(dwStyle, rect, this, IDC_COMBOBOXINLISTVIEW);
pList->ModifyStyleEx(0,WS_EX_CLIENTEDGE);//can we tell at all
pList->SetHorizontalExtent(CalcHorzExtent(pList, lstItems));
pList->ShowDropDown();
pList->SelectString(-1, strFind.GetBuffer(1));
// The returned pointer should not be saved
return pList;
}
