IWMStreamList::GetStreams method (wmsdkidl.h)

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The GetStreams method retrieves an array of stream numbers that make up the list.

Syntax

HRESULT GetStreams(
  [out]     WORD *pwStreamNumArray,
  [in, out] WORD *pcStreams
);

Parameters

[out] pwStreamNumArray

Pointer to a WORD array containing the stream numbers. Pass NULL to retrieve the required size of the array.

[in, out] pcStreams

On input, a pointer to a variable containing the size of the pwStreamNumArray array. On output, if the method succeeds, this variable contains the number of stream numbers entered into pwStreamNumArray by the method.

Return value

The method returns an HRESULT. Possible values include, but are not limited to, those in the following table.

Remarks

You should make two calls to GetStreams. On the first call, pass NULL as pwStreamNumArray. On return, the value pointed to by pcStreams is set to the number of stream numbers in the stream number array. Then you can allocate the required amount of memory for the array and pass a pointer to it as pwStreamNumArray on the second call.

Stream numbers are in the range of 1 through 63.

Requirements

See also

IWMStreamList Interface