[SzakiLaci]

I’ve found a bug: Item.count was called while Items is nil!
Here is the easy fix:

function TsAlphaImageList.GetCount: Integer;
{$ENDIF}
begin
    if Items = nil then begin // when destroying the form or setting UseCache := False.  by PizzaProgram 2023-08-18
        Result := 0;
        Exit;
    end;
  Result := Items.Count;
  if (Result < ImageList_GetImageCount(Handle)) and ((Result = 0) or (Items[0].ImageFormat = ifICO)) then
    UpdateFromStd;
end;

• This topic was modified 1 year, 3 months ago by SzakiLaci.

[SzakiLaci]

Tip2:

I had always memory release problems while destroying forms with VirtualImageList on it.
Found a solution:
Calling this proc when form is getting destroyed solves it:

procedure VirtPicList_FREE(var v : TsVirtualImageList);
begin
    if v = nil then Exit;
    try
        v.ShareImages := False;
        v.UseCache    := False; // this also calls ClearImages 
        v.Clear;
    except end;
    v := nil;
end;

Called simply by:

procedure TFrm_money.FormDestroy(Sender: TObject);
begin
  VirtPicList_FREE( MyVirtList );
  ... 
  inherited;
end;

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