IWMPControls::get_isAvailable method (wmp.h)
[The feature associated with this page, Windows Media Player SDK, is a legacy feature. It has been superseded by MediaPlayer. MediaPlayer has been optimized for Windows 10 and Windows 11. Microsoft strongly recommends that new code use MediaPlayer instead of Windows Media Player SDK, when possible. Microsoft suggests that existing code that uses the legacy APIs be rewritten to use the new APIs if possible.]
The get_isAvailable method indicates whether a specified type of information is available or a specified action can be performed.
Syntax
HRESULT get_isAvailable(
[in] BSTR bstrItem,
[out] VARIANT_BOOL *pIsAvailable
);
Parameters
[in] bstrItem
BSTR containing one of the following values.
| Value | Description |
|---|---|
| currentItem | Determines whether the user can set the IWMPControls::put_currentItem method. |
| currentMarker | Determines whether the user can seek to a specific marker. |
| currentPosition | Determines whether the user can seek to a specific position in the file. Some files do not support seeking. |
| fastForward | Determines whether the file supports fast forwarding and whether that functionality can be invoked. Many file types (or live streams) do not support fastForward. |
| fastReverse | Determines whether the file supports fastReverse and whether that functionality can be invoked. Many file types (or live streams) do not support fastReverse. |
| next | Determines whether the user can seek to the next entry in a playlist. |
| pause | Determines whether the IWMPControls::pause method is available. |
| play | Determines whether the IWMPControls::play method is available. |
| previous | Determines whether the user can seek to the previous entry in a playlist. |
| step | Determines whether the IWMPControls2::step method is available during playback. |
| stop | Determines whether the IWMPControls::stop method is available. |
[out] pIsAvailable
Pointer to a VARIANT_BOOL indicating whether a specified type of information is available or a specified action can be performed.
Return value
The method returns an HRESULT. Possible values include, but are not limited to, those in the following table.
| Return code | Description |
|---|---|
|
The method succeeded. |
Requirements
| Requirement | Value |
|---|---|
| Minimum supported client | Windows Media Player 9 Series or later. |
| Target Platform | Windows |
| Header | wmp.h |
| DLL | Wmp.dll |