手机发送短信问题

要在使用windows mobile 6.0 操作系统的手机上，使用VC编写一个能够向其他手机发送手机短信的程序，主要需要调用哪些函数呢？这些函数又在哪些头文件里？

还请各位大牛赐教，不胜感激！

RIL
SMS API

能说得具体一些吗？比如说函数的具体参数等等，才开始接触这些，比较菜，谢谢了！

lz用goole "Windows Mobile开发 短信"，比在这里问更快捷。

函数是要自己写的，主要编写怎么向GSM模块发AT命令，就可以实现发短信，可以查找相关发短信的AT命令，我也在做这个，不过做出了的，嘿嘿

lz问的是Windows Mobile，那是有直接API的（RIL, SMS），即使看MSDN也很清晰。比做wince的要便利了千万倍了。

memset(&rilMsg, 0, sizeof(RILMESSAGE));

        rilMsg.cbSize = sizeof(RILMESSAGE);
       
        rilMsg.dwType = RIL_MSGTYPE_OUT_SUBMIT;
        rilMsg.dwParams |= RIL_PARAM_M_TYPE;

        rilMsg.dwFlags = RIL_MSGFLAG_REPLYPATH;
        rilMsg.dwParams |= RIL_PARAM_M_FLAGS;

//        StringToRILAddress(L"15818682612", RIL_ADDRTYPE_UNKNOWN, &rilMsg.msgOutSubmit.raDestAddress);
        rilMsg.msgOutSubmit.raDestAddress.cbSize = sizeof(RILADDRESS);
        rilMsg.msgOutSubmit.raDestAddress.dwType = RIL_ADDRTYPE_UNKNOWN/*RIL_ADDRTYPE_NATIONAL*/;
        rilMsg.msgOutSubmit.raDestAddress.dwNumPlan = RIL_NUMPLAN_TELEPHONE/*RIL_NUMPLAN_UNKNOWN*/;
        wcscpy(rilMsg.msgOutSubmit.raDestAddress.wszAddress, L"15815369852");
        rilMsg.msgOutSubmit.raDestAddress.dwParams = RIL_PARAM_A_ALL;
        rilMsg.dwParams |= RIL_PARAM_M_DESTADDRESS;

        rilMsg.msgOutSubmit.dwProtocolID = RIL_MSGPROTOCOL_SMETOSME;
        rilMsg.dwParams |= RIL_PARAM_M_PROTOCOLID;

        rilMsg.msgOutSubmit.dwVPFormat = RIL_MSGVP_NONE;
        rilMsg.dwParams |= RIL_PARAM_M_VPFORMAT;

        rilMsg.msgOutSubmit.rmdDataCoding.cbSize = sizeof(RILMSGDCS);
        rilMsg.msgOutSubmit.rmdDataCoding.dwAlphabet = RIL_DCSALPHABET_UCS2;
        rilMsg.msgOutSubmit.rmdDataCoding.dwFlags = RIL_DCSFLAG_NONE;
        rilMsg.msgOutSubmit.rmdDataCoding.dwType = RIL_DCSTYPE_GENERAL/*RIL_DCSTYPE_MSGCLASS*/;
        rilMsg.msgOutSubmit.rmdDataCoding.dwMsgClass = RIL_DCSMSGCLASS_1;
        rilMsg.msgOutSubmit.rmdDataCoding.dwParams = RIL_PARAM_MDCS_FLAGS | RIL_PARAM_MDCS_ALPHABET | RIL_PARAM_MDCS_TYPE | RIL_PARAM_MDCS_MSGCLASS;
        rilMsg.dwParams |= RIL_PARAM_M_DATACODING;

        wcscpy((TCHAR *)rilMsg.msgOutSubmit.rgbMsg, TEXT("测试"));
        rilMsg.dwParams |= RIL_PARAM_M_MSG;

        rilMsg.msgOutSubmit.cchMsgLength = 14;
        rilMsg.dwParams |= RIL_PARAM_M_MSGLENGTH;


        m_hr = RIL_SendMsg(m_ril, &rilMsg, NULL);

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