IMDSPObjectInfo::GetPlayLength method (mswmdm.h)

Article
02/22/2024

The GetPlayLength method retrieves the play length of the object in units pertinent to the object. This is the remaining length that the object can play, not its total length.

Syntax

HRESULT GetPlayLength(
  [out] DWORD *pdwLength
);

Parameters

[out] pdwLength

Pointer to a DWORD containing the remaining play length of the object.

Return value

The method returns an HRESULT. All the interface methods in Windows Media Device Manager can return any of the following classes of error codes:

Standard COM error codes
Windows error codes converted to HRESULT values
Windows Media Device Manager error codes

For an extensive list of possible error codes, see Error Codes.

Remarks

The value of the play length retrieved is either the total length of the object minus the current play position (if the IMDSPObjectInfo::SetPlayLength method has not been called), or the value set by IMDSPObjectInfo::SetPlayLength clipped to be no greater than the total play length of the object minus the current play position.

For playable files, the value returned is specified in milliseconds. The play length information can change either when the user starts playing a file on the media device or when an application invokes the IMDSPDeviceControl::Play method.

For folders or file systems containing playable files, the value returned is in tracks or numbers of playable files in that folder or in the root of that file system.

Requirements

Requirement	Value
Target Platform	Windows
Header	mswmdm.h
Library	Mssachlp.lib

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