TIdHTTP GET Round Trip Request/Response Time in MSecs - c++builder

Question

I'm using TIdHTTP to make HTTP GET requests to get wiki pages (executed until x >= 9 times using a for loop statement).
I am trying to use TStopWatch to measure the HTTP round trip request/response time in milliseconds of each GET requests.
I have tried somes methods, but, I still in doubt that it was right or not. So, please tell me what's the right method to do that. Thank you.
Btw, the code I have is:
//---------------------------------------------------------------------------
int MSec = 0;
TTimeSpan TTSpan;
TDateTime StartTime;
DWORD AStartTime = 0;
DWORD CStartTime = 0;
String ACount, Codes, Milli, Result;
//---------------------------------------------------------------------------
__fastcall TForm1::TForm1(TComponent* Owner) : TForm(Owner)
{
IdHTTP->ConnectTimeout = 3048;
IdHTTP->ReadTimeout = 2048;
}
//---------------------------------------------------------------------------
void __fastcall TForm1::IdHTTPWork(TObject *ASender, TWorkMode AWorkMode, __int64 AWorkCount)
{
if (AWorkMode == wmRead)
ACount = "size: [" + String(AWorkCount) + " bytes]";
}
//---------------------------------------------------------------------------
void __fastcall TForm1::WorkClick(TObject *Sender)
{
static int Number = 1;
TStopwatch SWatch = TStopwatch::StartNew();
// CStartTime = GetTickCount();
// DWORD Start = timeGetTime();
// AStartTime = GetTickCount();
// CStartTime = TTSpan.Milliseconds;
Work->Enabled = false;
ListBox->Items->Clear();
ListBox->Items->BeginUpdate();
for (int i = 0; i < 9; i++)
{
try
{
SWatch.Start();
try
{
IdHTTP->Get("http://en.wikipedia.org/");
Sleep(1000);
}
catch (const Exception &E)
{
Label1->Caption = E.Message;
}
SWatch.Stop();
TTSpan = SWatch.Elapsed;
MSec = TTSpan.Milliseconds;
// MSec = TTSpan.Milliseconds / 10;
// MSec = SWatch.ElapsedMilliseconds / 10;
// TTSpan = SWatch.Elapsed;
// MSec = TTSpan.Milliseconds - CStartTime;
Milli = " time: [" + String(MSec) + " ms]";
Codes = " code: [" + IdHTTP->Response->ResponseText.LowerCase() + "]";
ListBox->Items->Add("(" + String(Number++) + "). " + ACount + Codes + Milli);
// AStartTime = GetTickCount();
// ListBox->Items->Add("(" + String(Number++) + "). " + ACount + Codes + Result.sprintf(L" time: [%i ms]",(aStartTime-bStartTime)));
}
__finally
{
Work->Enabled = true;
IdHTTP->Disconnect(true);
ListBox->Items->EndUpdate();
}
}
}