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Does anyone have experience using the PivotTable VCL components? The trial currently available only goes to Delphi XE. If the product is still available with source, that isn't an issue for me. But I don't want to install XE or earlier just to install the trial. The forum is still accessible but I am not able to create an account because the "are you a person" verification does not appear on the registration page, even though it is required to be completed. Unfortunately, the existing forum posts may be the only support available, since the last post was almost six years ago.

Hi, I got a problem with TListView and Data. It seems that I got memory leaks, because Data pointers are not released (if I understand it well). Let me show you what I do: Here is a simple TListView (LV_Data). I add few items to the list (Report Style) into 3 Columns. var i : Integer; ListItem : TListItem; PObject : PChar; for i := 0 to 3 do begin // Caption ListItem := AList.Items.Add; ListItem.Caption := 'My Caption' + '_' + Inttostr(i+1); // Language Name ListItem.SubItems.Add('Language' + '_' + Inttostr(i+1)); // User Name ListItem.SubItems.Add('User Name' + '_' + Inttostr(i+1)); // User Data Path PObject := StrAlloc(250); StrPCopy(PObject, 'PATH_TO_USER_DIRECTORY' + '_' + Inttostr(i+1)); ListItem.Data := PObject; end; As you can see, I also add "hidden" data (in this example a path to directory, as string). I can use it in program, without displaying it to user in listview. I can read it in simple way (for examle, in ListView OnClick event:) var sPath : string; if (LV_Data.Items.Count > 0) AND (LV_Data.ItemIndex <> -1) then begin sPath := StrPas(PChar(LV_Data.Items[LV_Data.ItemIndex].Data)); end; Everything works very nice... but, when I close program, I see there are some memory leaks. --------------------------- Unexpected Memory Leak --------------------------- An unexpected memory leak has occurred. The unexpected small block leaks are: 473 - 520 bytes: Unknown x 3 --------------------------- OK --------------------------- As far as I know, I have to free those List View Data bymyself. How to do this? procedure TMainFrm.LV_DataDeletion(Sender: TObject; Item: TListItem); begin if Item.Data <> nil then begin FreeMem(Item.Data); Item.Data := nil; end; end; Above code not working (why!?), got Invalid Pointer Operation. Could you please tell me how to free this data to avoid memory leak? Thank you in advance, -Pawel