Microsoft KB Archive/320521

= PRB: Media Player Does Not Display Error Message from Custom Source Filter =

Article ID: 320521

Article Last Modified on 5/17/2002

-

APPLIES TO


 * Microsoft Windows Media Player 7.1

-



This article was previously published under Q320521



SYMPTOMS
Windows Media Player does not display custom error messages from a custom source filter.



CAUSE
Microsoft DirectX does not have a mechanism for passing error messages to Windows Media Player. Microsoft DirectShow defines an event named EC_OLE_STRING for passing strings to applications from filters; however, Windows Media Player only uses this event for closed captioning.



RESOLUTION
To display a custom error message, call MessageBox in the source filter.



STATUS
This behavior is by design.

Keywords: kbprb KB320521

-

[mailto:TECHNET@MICROSOFT.COM Send feedback to Microsoft]

© Microsoft Corporation. All rights reserved.