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The ExpirationAfterFirstUse property specifies and retrieves the license expiration in number of hours, beginning when the consumer first uses any of the rights specified in the license. For example, if a license allows playback, transferring to portable device, and copying (burning) to CD, any of these actions will begin the expiration countdown.


WMRMRights.ExpirationAfterFirstUse = DWORD
DWORD = WMRMRights.ExpirationAfterFirstUse


This property takes no parameters.

Return Values

When getting the value, this property returns a DWORD specifying the number of hours for which a license is valid, beginning when it is first used. If it fails, it returns E_FAIL.


By default, this property is not set and the license does not expire.

Example Code

' Before you can issue a license, you must specify the consumer's
' rights and set them in the WMRMLicGen object.

' Declare objects.
    Dim sRights
    Dim RightsObj
    Dim LicGenObj

' Create objects.
    Set RightsObj = Server.CreateObject("Wmrmobjs.WMRMRights")
    Set LicGenObj = Server.CreateObject("Wmrmobjs.WMRMLicGen")

' Reset the WMRMRights object.

' Specify the rights that will be granted to the consumer.
    RightsObj.AllowBackupRestore = False
    RightsObj.AllowPlay = True

' Set the license to expire two days after the consumer opens the file.
    RightsObj.ExpirationAfterFirstUse = 48
    RightsObj.DisableOnClockRollback = True

' Retrieve the string containing the rights.
    sRights = RightsObj.GetAllRights()

' Set the rights in the license generator.
    LicGenObj.Rights = sRights

' Continue the license issuing process.


Version: Windows Media Rights Manager 7 SDK or later

Reference: wmrmobjs 1.0 Type Library

Library: wmrmobjs.dll

Platform: Windows Server 2003

See Also