IWMHeaderInfo::AddMarker method (wmsdkidl.h)

Статья
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 It has been superseded by Source Reader and Sink Writer.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 AddMarker method adds a marker, consisting of a name and a specific time, to the header section of the ASF file.

Syntax

HRESULT AddMarker(
  [in] LPCWSTR_WMSDK_TYPE_SAFE pwszMarkerName,
  [in] QWORD                   cnsMarkerTime
);

Parameters

[in] pwszMarkerName

Pointer to a wide-character null-terminated string containing the marker name. Marker names are limited to 5120 wide characters.

[in] cnsMarkerTime

The marker time in 100-nanosecond increments.

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.
NS_E_INVALID_STATE	The object cannot currently be configured.
E_POINTER	pwszMarkerName is not a valid pointer.
E_UNEXPECTED	The method failed for an unspecified reason.

Remarks

The writer does not support markers. When accessing IWMheaderInfo from the writer, calls to AddMarker will return E_NOTIMPL.

Requirements

Requirement	Value
Minimum supported client	Windows 2000 Professional [desktop apps only],Windows Media Format 7 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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