IWMWatermarkInfo::GetWatermarkEntryCount method (wmsdkidl.h)

Artikel
4/26/2023

[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 It has been superseded by Source Reader and Sink Writer.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 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.

Syntax

HRESULT GetWatermarkEntryCount(
  [in]  WMT_WATERMARK_ENTRY_TYPE wmetType,
  [out] DWORD                    *pdwCount
);

Parameters

[in] wmetType

A value from the WMT_WATERMARK_ENTRY_TYPE enumeration type specifying the type of watermarking system..

[out] pdwCount

Pointer to a DWORD containing the number of watermark entries.

Return value

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

Return code	Description
S_OK	The method succeeded.

Remarks

No watermarking DMOs are provided with the Windows Media Format SDK. You can install third-party DMOs to use with your application.

Requirements

Requirement	Value
Minimum supported client	Windows 2000 Professional [desktop apps only],Windows Media Format 9 Series SDK, or later versions of the SDK
Minimum supported server	Windows 2000 Server [desktop apps only]
Target Platform	Windows
Header	wmsdkidl.h (include Wmsdk.h)
Library	Wmvcore.lib; WMStubDRM.lib (if you use DRM)

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