Help Center/ Meeting/ Client SDK Reference/ Windows SDK/ APIs/ Meeting Control/ Starting an Instant Meeting

Updated on 2025-07-28 GMT+08:00

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Starting an Instant Meeting

StartP2pConf

API Description

This API is used to start an instant meeting.

Precautions

This API is an asynchronous API. The return value only indicates whether the API is successfully called. The actual service processing result is returned in the corresponding callback function.

Method Definition

    
         HWM_SDK_AGENT_API hwmsdk::HwmErrCode StartP2pConf(const HwmP2PStartCallInfo *startCallInfo);

Callback Function

    
         virtual void OnStartP2pConfResult(hwmsdk::HwmErrCode ret, const char* reason, HwmConfInfo *confInfo) {};

Parameter Description

Parameter	Mandatory	Type	Description
startCallInfo	Yes	HwmP2PStartCallInfo	Instant meeting details.

**Table 1** HwmP2PStartCallInfo description
Parameter	Mandatory	Type	Description
callerInfo	Yes	HwmCallerInfo	Caller information.
calleeInfo	Yes	HwmCalleeInfo	Called participant information.
mediaType	Yes	HwmMediaType	Definition Media type. Constraints N/A Default Value HWM_MEDIA_TYPE_AUDIO: voice.
isGuestJoinConfWithoutPwd	No	bool	Definition Whether guests can join the meeting without a password. Constraints N/A Default Value The password is required.
callInRestriction	No	HwmJoinConfPermissionType	Definition Incoming call restriction. Constraints N/A Default Value RESTRICTION_CALL_IN_ALL: everyone.

**Table 2** HwmCallerInfo description
Parameter	Mandatory	Type	Description
nickName	No	char[]	Definition Name of the caller. Constraints N/A Range 0 to 256 characters. Default Value N/A

**Table 3** HwmCalleeInfo description
Parameter	Mandatory	Type	Description
nickName	No	char[]	Definition Name of the called participant. Constraints N/A Range 0 to 256 characters. Default Value N/A
number	Yes	char[]	Definition Number. Constraints If this parameter is set to the SIP number (for example, +99111244216210249) allocated to the account, the Huawei Cloud Meeting app is called. If this parameter is set to a PSTN number (for example, 18700000000), the number is called through the VoIP gateway if the enterprise has enabled PSTN call. This parameter is used for account and password authentication. Either this parameter or thirdUserId must be set. Range 0 to 128 characters. Default Value N/A
thirdUserId	Yes	char[]	Definition Third-party user ID. Constraints For app ID authentication. Either this parameter or number must be set. Range 0 to 128 characters. Default Value N/A
userUuid	No	char[]	Definition Participant UUID. Constraints N/A Range 0 to 129 characters. Default Value N/A
type	No	HwmConfAttendeeType	Definition Meeting user type. Constraints N/A Default Value HWM_ATTENDEE_TYPE_NORMAL: client.
orgId	No	char[]	Definition Enterprise ID. Constraints N/A Range 0 to 32 characters. Default Value N/A

Return Values

**Table 4** Return values
Type	Description
HwmErrCode	If 0 is returned, the operation is successful. If other values are returned, the operation fails. For details about values returned upon failures, see Common Error Codes.
HwmConfInfo	Meeting details.

Sample Code

    
     
       
       
         /**
* Start an instant meeting.
*/
int demoStartP2pConfDlg::clickStartP2pConf()
{
    hwmsdkagent::HwmP2PStartCallInfo data{};
    
    // Set the caller information.
    string callerNickName = CTools::UNICODE2UTF(CString("Caller name"));
    strncpy_s(data.callerInfo.nickName, callerNickName.c_str(), HWM_MAX_DISPLAY_NAME_LEN);
    // Set the information about the called participant.
    string calleeNickName = CTools::UNICODE2UTF(CString("Called participant name"));
    strncpy_s(data.calleeInfo.nickName, calleeNickName.c_str(), HWM_MAX_DISPLAY_NAME_LEN);
    string calleeNumber = CTools::UNICODE2UTF(CString("123456"));
    strncpy_s(data.calleeInfo.number, calleeNumber.c_str(), HWM_MAX_NUMBER_LEN);
    string calleeThirdUserId = CTools::UNICODE2UTF(CString("123456"));
    strncpy_s(data.calleeInfo.calleeThirdUserId, calleeThirdUserId.c_str(), HWM_MAX_USER_ID_LEN);
    // Set the media type.
    data.mediaType = hwmsdkagent::HWM_MEDIA_TYPE_VIDEO
    
    // Call the SDK API.
    int ret = hwmsdkagent::StartP2pConf(&data);
    return ret;
}

        

      

    
   