IWMWatermarkInfo interface (wmsdkidl.h)
[The feature associated with this page, Windows Media Format 11 SDK, is a legacy feature. It has been superseded by Source Reader and Sink Writer. Source Reader and Sink Writer have been optimized for Windows 10 and Windows 11. Microsoft strongly recommends that new code use Source Reader and Sink Writer instead of Windows Media Format 11 SDK, when possible. Microsoft suggests that existing code that uses the legacy APIs be rewritten to use the new APIs if possible.]
The IWMWatermarkInfo interface retrieves information about available watermarking systems. Watermarking systems are implemented in DirectX Media Objects that are registered for use with the Windows Media Formats SDK.
An IWMWatermarkInfo interface exists for every writer object. To obtain a pointer to this interface, call QueryInterface on any other interface of the writer object.
Inheritance
The IWMWatermarkInfo interface inherits from the IUnknown interface. IWMWatermarkInfo also has these types of members:
Methods
The IWMWatermarkInfo interface has these methods.
| IWMWatermarkInfo::GetWatermarkEntry The GetWatermarkEntry method retrieves information about one available watermarking system. |
| IWMWatermarkInfo::GetWatermarkEntryCount The GetWatermarkEntryCount method retrieves the total number of installed watermarking systems of a specified type. Use this method in conjunction with IWMWatermarkInfo::GetWatermarkEntry to enumerate the installed watermarking DMOs. |
Requirements
| Requirement | Value |
|---|---|
| Target Platform | Windows |
| Header | wmsdkidl.h |