procedure TForm1.Button1Click(Sender: TObject);
var
 h: HWND;
 AIcon: TIcon;
begin
 AllocConsole;
 SetConsoleTitle(PChar('Console Title'));
 Sleep(0);
 h := FindWindow(nil, PChar('Console Title'));
 AIcon := TIcon.Create;
 ImageList1.GetIcon(0, AIcon);
 SendMessage(h, WM_SETICON, 1, AIcon.Handle);
 AIcon.Free;
end;