這兩天寫一個程序,其中想判斷當前PPC 是否 Protect PC Phone, 在MSDN 上找到一篇文章,應該有所幫助,只是尚未測試,先記下
如何維護用於 Pocket PC 和 Smartphone 的單一二進制文件
上面這片文章揭示的是如何通過程序來區分當前的系統是Protect PC 還是 SmartPhone, 如果是Protect PC ,那想進一步區分是普通的PPC 還是 Protect PC Phone 呢?
在 Mobile 5.0 Protect PC SDK 中有個 "GetPhoneNumber" 的 sample, 在Protect PC模擬器,取出的號碼是空,在 Protect PC Phone模擬器上取出了號碼,原以爲可以把這個函數照搬拿來用,但在我的多普達P800上竟然也取出個空號,實在有點出乎意料。
反覆跟蹤以後(只能不停的彈 MessageBox 在我的P800上),sample裏取號碼的那段代碼兼容性肯定有問題,他是判斷 LINEADDRESSCAPS.dwAddressSize 是否是0,不是0 就 (WCHAR*)(((BYTE*)placAddressCaps)+placAddressCaps->dwAddressOffset 就以這個爲PhoneNumber 了,但是在P800 上 LINEADDRESSCAPS.dwAddressSize 就是 0 !同樣 dwAddressOffset 也是 0 ,究竟怎樣才能取的號碼這個只能以後再研究了。
其實只要 sample的前半段代碼就足夠用來判斷Protect PC 是否帶 Phone 了,只要判斷 LINEADDRESSCAPS+pLineDevCaps->dwLineNameOffset 是否是 CELLTSP_LINENAME_STRING ,是的話那就應該是有Phone 了 。 CELLTSP_LINENAME_STRING 在 tsp.h 中定義
#define CELLTSP_LINENAME_STRING (L"Cellular Line")
代碼如下:
bool IsSupportPhone()
...{
const DWORD TAPI_API_LOW_VERSION = 0x00020000;
const DWORD TAPI_API_HIGH_VERSION = 0x00020000;
bool bResult = false;
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 = 0;
liep.dwTotalSize = sizeof(liep);
liep.dwOptions = LINEINITIALIZEEXOPTION_USEEVENT;
if(SUCCEEDED(lineInitializeEx(&hLineApp, 0, 0, TEXT("ExTapi_Lib"), &dwNumDevs, &dwAPIVersion, &liep)))
...{
BYTE* pCapBuf = NULL;
DWORD dwCapBufSize = 512;
LINEEXTENSIONID LineExtensionID;
LINEDEVCAPS* pLineDevCaps = NULL;
pCapBuf = new BYTE[dwCapBufSize];
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];
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;
bResult = true;
break;
}
}
}
delete [] pCapBuf;
}
lineShutdown(hLineApp);
return bResult;
}