IWMDMObjectInfo::SetPlayLength method (mswmdm.h)

Article
02/22/2024

The SetPlayLength method sets the play length of the object, in units appropriate to the format. This is the maximum length that the object plays regardless of its actual length.

Syntax

HRESULT SetPlayLength(
  [in] DWORD dwLength
);

Parameters

[in] dwLength

DWORD specifying the play length, in units appropriate to the format.

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

If the value passed in is greater than the total length of the object, it is clipped to the length of the object minus the object's current play position minus one unit.

For playable files, the value to set is specified in milliseconds. The value is clipped to no more than the total length of the file minus the object's current play offset position. The play position information can change either when the user starts playing a file on the media device or when an application invokes the IWMDMDeviceControl::Play method.

For folders or file systems containing playable files, the value passed is the number 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