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The Open method opens a network port.
Syntax
HRESULT Open(
DWORD* pdwPortNum
);
Parameters
pdwPortNum
[in, out] On input, either specifies the port number required, or specifies zero and the sink selects a suitable port, the number of which is returned in this parameter on output.
Return Values
If the method succeeds, it returns S_OK. If it fails, it returns an HRESULT error code.
| Return code | Meaning |
| E_INVALIDARG | The pdwPortNum parameter is NULL. |
| NS_E_INVALID_REQUEST | The writer is not in an appropriate state. |
Remarks
This method claims the network port number. To release the port, close the network sink.
See Also
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