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Posted by Ravi on August 6, 2007, 12:52 pm
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All,
I was trying to use the getphonenumber sample application which displays
the device's phone number. This works fine on a WM 5.0 device, but does not
on a WM 6.0 device (standard or professional). The API used
lineGetAddressCaps() returns address size as 0.
What am I missing? Are there any alternative ways of getting the phone
number? Appending the getphone number main code at the end of the mail.
thanks in advance
ravi
HRESULT SHGetPhoneNumber(LPTSTR szNumber, UINT cchNumber, UINT nLineNumber)
{
HRESULT hr = E_FAIL;
LRESULT lResult = 0;
HLINEAPP hLineApp;
DWORD dwNumDevs; //number of line devices
DWORD dwAPIVersion = TAPI_API_HIGH_VERSION;
LINEINITIALIZEEXPARAMS liep;
DWORD dwTAPILineDeviceID;
const DWORD dwAddressID = nLineNumber - 1;
liep.dwTotalSize = sizeof(liep);
liep.dwOptions = LINEINITIALIZEEXOPTION_USEEVENT;
//initialize line before accessing
if (SUCCEEDED(lineInitializeEx(&hLineApp, 0, 0, TEXT("ExTapi_Lib"),
&dwNumDevs, &dwAPIVersion, &liep)))
{
BYTE* pCapBuf = NULL;
DWORD dwCapBufSize = CAPS_BUFFER_SIZE;
LINEEXTENSIONID LineExtensionID;
LINEDEVCAPS* pLineDevCaps = NULL;
LINEADDRESSCAPS* placAddressCaps = NULL;
pCapBuf = new BYTE[dwCapBufSize];
EXIT_ON_NULL(pCapBuf);
pLineDevCaps = (LINEDEVCAPS*)pCapBuf;
pLineDevCaps->dwTotalSize = dwCapBufSize;
// Get TSP Line Device ID
dwTAPILineDeviceID = 0xffffffff;
for (DWORD dwCurrentDevID = 0 ; dwCurrentDevID < dwNumDevs ;
dwCurrentDevID++)
{
//ensure TAPI, service provider, and application are all using
the same versions
if (0 == lineNegotiateAPIVersion(hLineApp, dwCurrentDevID,
TAPI_API_LOW_VERSION, TAPI_API_HIGH_VERSION,
&dwAPIVersion, &LineExtensionID))
{
lResult = lineGetDevCaps(hLineApp, dwCurrentDevID,
dwAPIVersion, 0, pLineDevCaps);
//increase buffer size if too small to hold the device
capabilities
if (dwCapBufSize < pLineDevCaps->dwNeededSize)
{
delete[] pCapBuf;
dwCapBufSize = pLineDevCaps->dwNeededSize;
pCapBuf = new BYTE[dwCapBufSize];
EXIT_ON_NULL(pCapBuf);
pLineDevCaps = (LINEDEVCAPS*)pCapBuf;
pLineDevCaps->dwTotalSize = dwCapBufSize;
lResult = lineGetDevCaps(hLineApp, dwCurrentDevID,
dwAPIVersion, 0, pLineDevCaps);
}
//lResult of 0 means the device capabilities were
successfully returned
if ((0 == lResult) &&
(0 ==
_tcscmp((TCHAR*)((BYTE*)pLineDevCaps+pLineDevCaps->dwLineNameOffset),
CELLTSP_LINENAME_STRING)))
{
dwTAPILineDeviceID = dwCurrentDevID;
break;
}
}
}
placAddressCaps = (LINEADDRESSCAPS*)pCapBuf;
placAddressCaps->dwTotalSize = dwCapBufSize;
lResult = lineGetAddressCaps(hLineApp, dwTAPILineDeviceID,
dwAddressID, dwAPIVersion, 0, placAddressCaps);
//increase buffer size if too small to hold the address capabilities
if (dwCapBufSize < placAddressCaps->dwNeededSize)
{
delete[] pCapBuf;
dwCapBufSize = placAddressCaps->dwNeededSize;
pCapBuf = new BYTE[dwCapBufSize];
EXIT_ON_NULL(pCapBuf);
placAddressCaps = (LINEADDRESSCAPS*)pCapBuf;
placAddressCaps->dwTotalSize = dwCapBufSize;
lResult = lineGetAddressCaps(hLineApp, dwTAPILineDeviceID,
dwAddressID, dwAPIVersion, 0, placAddressCaps);
}
//lResult of 0 means the address capabilities were successfully
returned
if (0 == lResult)
{
if (szNumber)
{
szNumber[0] = TEXT('');
EXIT_ON_FALSE(0 != placAddressCaps->dwAddressSize);
// A non-zero dwAddressSize means a phone number was found
ASSERT(0 != placAddressCaps->dwAddressOffset);
PWCHAR tsAddress =
(WCHAR*)(((BYTE*)placAddressCaps)+placAddressCaps->dwAddressOffset);
StringCchCopy(szNumber, cchNumber, tsAddress);
}
hr = S_OK;
}
delete[] pCapBuf;
} // End if ()
FuncExit:
lineShutdown(hLineApp);
return hr;
}
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