Author: Tomas Rutkauskas

Is it possible to activate the click or double-click event for the subitems of a 
listview item? If yes, how can I do it?

Answer:

1   uses
2     CommCtrl;
3   
4   {$R *.dfm}
5   
6   procedure TForm1.ListView1Click(Sender: TObject);
7   var
8     pt: TPoint;
9     item: TLIstItem;
10    hittestinfo: TLVHitTestInfo;
11  begin
12    pt := listview1.ScreenToClient(mouse.cursorpos);
13    item := listview1.GetItemAt(pt.x, pt.y);
14    if assigned(item) then
15      memo1.Lines.add('Hit on item ' + item.Caption)
16    else
17    begin
18      FillChar(hittestinfo, sizeof(hittestinfo), 0);
19      hittestinfo.pt := pt;
20      if - 1 <> listview1.perform(LVM_SUBITEMHITTEST, 0, lparam(@hittestinfo)) then
21      begin
22        memo1.lines.add(format('Item: %d (%s), subitem: %d (%s)', [hittestinfo.iItem,
23          listview1.items[hittestinfo.iItem].caption, hittestinfo.iSubItem,
24            listview1.items[hittestinfo.iItem].Subitems[hittestinfo.iSubItem - 1]]));
25  
26      end
27      else
28        memo1.lines.add('Not on item or subitem');
29    end;
30  end;