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The SetPlayOffset method sets the play offset of the object, in the units pertinent to the object. This specifies the starting point for the next invocation of play.
Syntax
HRESULT SetPlayOffset(
DWORD dwOffset
);
Parameters
dwOffset
[in] Double word containing the play offset to set for the object, in units pertinent to the object.
Return Values
If the method succeeds, it returns S_OK. If it fails, it returns an HRESULT error code.
| Return code | Description |
| E_INVALIDTYPE | The object that this interface is associated with is not a valid playable file or a folder or file system containing playable files. |
| WMDM_E_NOTSUPPORTED | This device does not support setting play lengths. |
| E_FAIL | An unspecified error occurred. |
Remarks
If the value passed is greater than the total length of the object minus the current play length, it is clipped to the length of the object minus the play length.
For playable files, the value is specified in milliseconds. The play offset position value does not change when the user presses play on the media device or when an application invokes the IMDSPDeviceControl::Play method.
For folders or file systems containing playable files, the value indicates the first track that is played when an application invokes the IMDSPDeviceControl::Play method.
See Also
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