[RESOLVED] Desperately Stuck...CreateProcess & Pipes

[bderagon]

For some reason, the following code isn't doing what I expected in two areas:

First, the pipe is only reading the first line of the output.
Second, the text control I have isn't displaying any text at all, even though I can see the first line read ok.

Any help would be appreciated in getting to read all the text.

	CButton *btnOk = reinterpret_cast<CButton *>(GetDlgItem(IDOK));
	CEdit *txtPing = reinterpret_cast<CEdit *>(GetDlgItem(IDC_Ping2));
	CString strPing;

	btnOk->EnableWindow(FALSE);

	BOOL PipeResult( const CString& CommandLine, CString& strOutFile );
	STARTUPINFO si;
	memset( &si, 0, sizeof( si ) );
	si.cb = sizeof( si );
	si.dwFlags = STARTF_USESHOWWINDOW;
	si.wShowWindow = SW_HIDE;
	SECURITY_ATTRIBUTES saAttr;
	saAttr.nLength = sizeof(SECURITY_ATTRIBUTES);
	saAttr.bInheritHandle = TRUE;
	saAttr.lpSecurityDescriptor = NULL;
	HANDLE hReadPipe, hWritePipe;
	BOOL cp = CreatePipe( &hReadPipe, &hWritePipe, &saAttr, 0 );
	if ( !cp)
	{
		AfxMessageBox(_T(GetLastError()));
	}
	else
	{
		si.dwFlags |= STARTF_USESTDHANDLES;
		si.hStdOutput = hWritePipe;
		PROCESS_INFORMATION pi;
		cp = CreateProcess( NULL, (LPTSTR)(LPCTSTR)"ping google.com", NULL, NULL, TRUE, 0, NULL, NULL, &si, &pi );
		if (!cp)
		{
			AfxMessageBox(_T(GetLastError()));
		}
		else
		{
			// Close write pipe
			CloseHandle( hWritePipe );
			DWORD NumberOfBytesRead;
			TCHAR Buffer[ 500 ];
			while(::ReadFile( hReadPipe, Buffer, sizeof(Buffer)/sizeof(Buffer[ 0 ])-1,&NumberOfBytesRead, NULL ) )
				{
					if (NumberOfBytesRead)
					{
						Buffer[ NumberOfBytesRead ] = TCHAR( 0 );
						strPing += Buffer;
					}
					else
					{
						break;
					};

					CloseHandle( hReadPipe );
					WaitForSingleObject( pi.hProcess, INFINITE );
					cp = TRUE;
			}
		}
	}

	btnOk->EnableWindow(TRUE);
	txtPing->SetWindowTextA(strPing);