windowsmobile下用注册表获取手机的信号强度

void GetPhoneInformation(TCHAR * signalStrength, TCHAR * operatorName, TCHAR* LastIncallNumber) { HKEY hPhone; TCHAR tszOperatorName[256]; TCHAR tszLastIncallNumber[256]; ZeroMemory(tszOperatorName, 512); ZeroMemory(tszLastIncallNumber, 512); DWORD dwsignalStrenght = 0; DWORD dwType; DWORD dwOpSize = sizeof(tszOperatorName); DWORD dwInCallSize = sizeof(tszLastIncallNumber); DWORD dwStrengthSize = 256; RegOpenKeyEx(HKEY_LOCAL_MACHINE, _T("System\\State\\Phone"), 0, 0, &hPhone); //get the operator name RegQueryValueEx(hPhone, _T("Current Operator Name"), 0, &dwType, (BYTE*)tszOperatorName, &dwOpSize); //get the last incalling number RegQueryValueEx(hPhone, _T("Last Incoming Caller Number"), 0, &dwType, (BYTE*)tszLastIncallNumber, &dwInCallSize); //get the signal strength RegQueryValueEx(hPhone, _T("Signal Strength Raw"), 0, &dwType, (BYTE*)&dwsignalStrenght, &dwStrengthSize); wsprintf(operatorName, TEXT("Operator: %s"), tszOperatorName); wsprintf(LastIncallNumber, TEXT("Last Incall: %s"), tszLastIncallNumber); wsprintf(signalStrength, TEXT("Signal: %d"), dwsignalStrenght); RegCloseKey(hPhone); }