Remarks
Starts a recording session through the given input device and channel.
Calling this method will cause the control to fire a RecordingStarted event. The recording session can be stopped at any time through a call to the Stop method.
For details about the encoding format and parameters applied during recording see the How to perform a recording session section.
Syntax
[Visual Basic]
Public Function StartFromDirectSoundDevice (
nInputDevice as Int16,
nInputChannel as Int16,
strOutputPath as string
) as enumErrorCodes
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[C#]
public enumErrorCodes StartFromDirectSoundDevice (
Int16 nInputDevice,
Int16 nInputChannel,
string strOutputPath
);
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[C++]
public: enumErrorCodes StartFromDirectSoundDevice (
Int16 nInputDevice,
Int16 nInputChannel,
string strOutputPath
);
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Parameter
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Description
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nInputDevice
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Number representing the zero-based index of the DirectSound input device (sound card) that will be used for recording. Use the value returned by the GetInputDevicesCount method in order to know how many input devices are currently installed on the system and the GetInputDeviceDesc method in order to retrieve the friendly name of each input device.
If the multimedia engine shouldn't find any enabled or valid input or output device, the container application would be notified through the WarnNoInputDevice and WarnNoOutputDevice events.
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nInputChannel
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Number representing the zero-based index of the input channel (Microphone, Stereo Mix, Line-In, etc.) that will be used for recording on the input device set through the nInputDevice parameter (use -1 for setting the system default input channel).
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strOutputPath
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String representing the absolute pathname of the output file that will contain the recorded data. If this pathname should contain invalid characters, they would be automatically changed into an underscore '_' character..
If the string is left empty, the recording session will be performed in memory.
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Return value
Value
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Meaning
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Negative value
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An error occurred. Check the LastError property value in order to see the last error.
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enumErrorCodes.ERR_NOERROR (0)
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The method call was successful.
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