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IRTCClient::SendDTMF

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The SendDTMF method sends a DTMF to the active session and plays a feedback tone to the RTC default audio device. This method should be called when a dialpad button is pressed.

HRESULT SendDTMF(RTC_DTMFenDTMF);

Parameters

  • enDTMF
    [in] An RTC_DTMF enumeration that specifies which DTMF should be sent.

Return Values

RTC methods may return an RTC_E_ constant.

Value Meaning
RTC_E_CLIENT_NOT_INITIALIZED The client has not been initialized.

Remarks

The RTC Client API only supports sending DTMF to the active session. There is no mechanism for the application to receive DTMF.

Requirements

Client: Requires Windows XP.
Server: Requires Windows Server 2003.
Redistributable: Requires Rtcdll.dll on Windows 2000, and Windows Me/98.
Header: Declared in Rtccore.h.
Library: Included as a resource in Rtcdll.dll.
GUID: IID_IRTCClient is defined as 07829e45-9a34-408e-a011-bddf13487cd1.

See Also

IRTCClient, RTC_DTMF