InternetOpenUrl() fails with ERROR_IO_PENDING in asynchronous mode

Hi,

    I m trying to access the internet in the asynchronous mode for wince 4.2 smartphone 2003 SE using VS2005. I have already tested the synchronous mode for operation on the emulator. However if I try to download the same URL in asynchronous mode, InternetOpenUrl() API call fails with error code as ERROR_IO_PENDING. I have tried out almost all the code samples on the internet (their happen to be only a couple of them it seems). But still this error is very unexpected as the same URL opens in the synchronous mode. Pls take a look at my code here :

the url i pass to this function is http://10.20.40.1/foo.html

Any help on this would be highly appreciated

int CInternetData::IssueHttpRequestAsync(LPCTSTR lpszUrl,LPTSTR lpResponse)

{

HINTERNET hOpen = NULL , hRequest = NULL;

TCHAR lpCanonicalUrl[500];

DWORD dwSize = 0;

DWORD dwLastError;

// Initialize the use of the Windows CE Internet functions.

hOpen = InternetOpen (TEXT("CeHttp"), INTERNET_OPEN_TYPE_PRECONFIG,NULL, 0, INTERNET_FLAG_ASYNC);

if (!hOpen)

{

wsprintf (szErrMsg, TEXT("%s: %d"), TEXT("InternetApi : InternetOpen : "),

GetLastError());

return ERROR_INTERNET_OPEN;

}

INTERNET_STATUS_CALLBACK statusCallback = InternetSetStatusCallback(hOpen,InternetCallbackFunc);

if(statusCallback == INTERNET_INVALID_STATUS_CALLBACK)

{

wsprintf (szErrMsg, TEXT("%s: %d"), TEXT("InternetData : InternetSetStatusCallback: "),

GetLastError());

return ERROR_INTERNETCANONICALIZEURL;

}

DWORD dwContext = 1;

if (!(hRequest = InternetOpenUrl (hOpen, lpszUrl, NULL, 0,INTERNET_FLAG_RELOAD, dwContext ))) 

//IT FAILS HERE

{

dwLastError=GetLastError();

if(dwLastError != ERROR_IO_PENDING)

{

wsprintf (szErrMsg, TEXT("%s:%d"), TEXT("InternetData : InternetOpenUrl : "),dwLastError);

InternetCloseHandle(hOpen);

return ERROR_INTERNET_OPEN_URL;

}

}

char buffer[4096];

TCHAR bufferW[4096];

INTERNET_BUFFERS ib;

ib.dwStructSize = sizeof(ib);

ib.lpvBuffer = (LPVOID)buffer;

ib.dwBufferLength = 4096*sizeof(char);

bool bOk = InternetReadFileEx(hRequest,&ib,IRF_ASYNC,dwContext);

if(!bOk && GetLastError()==ERROR_IO_PENDING);

else

{

dwSize = MultiByteToWideChar (CP_ACP, 0, buffer, -1, NULL, 0);

MultiByteToWideChar (CP_ACP, 0, buffer, -1, bufferW, dwSize);

_tcscat(lpResponse,(LPCTSTR)bufferW);

}

while( bOk && ib.dwBufferLength!=0 )

{

bOk = InternetReadFileEx( hRequest, &ib, IRF_ASYNC, (LPARAM)this );

if(!bOk && GetLastError()==ERROR_IO_PENDING);

else

{

dwSize = MultiByteToWideChar (CP_ACP, 0, buffer, -1, NULL, 0);

MultiByteToWideChar (CP_ACP, 0, buffer, -1, bufferW, dwSize);

_tcscat(lpResponse,(LPCTSTR)bufferW);

}

}

InternetCloseHandle(hRequest);

InternetSetStatusCallback(hOpen,NULL);

InternetCloseHandle(hOpen);

return SUCCESSFUL;

}