WindowsMediaPlayerClass without Forms, is that even possible? Eric 5/13/2007 2:38:01 AM Goal: Be able to test a windows media stream via the command line, and print the output "OK" or "ERR" depending on the status. I was able to successfully do it via windows forms: "app.exe http://url/file.wmv" Problem: However, these will only work if executed from a logged-in-desktop's command prompt. When I have the call executed FROM another NT service, I get an error in the event viewer: Exception in show dialog System.InvalidOperationException: Showing a modal dialog box or form when the application is not running in UserInteractive mode is not a valid operation. Specify the ServiceNotification or DefaultDesktopOnly style to display a notification from a service application. at System.Windows.Forms.Form.ShowDialog(IWin32Window owner) at System.Windows.Forms.Form.ShowDialog() Alternative Solution #1 (didn't work): I removed the call 'form.showDialog()' to avoid the error; but that caused Windows Media Player to not play the content at all, and remain in the 'transitioning' state. Alternative Solution #2 (didn't work): I tried testing both WindowsMediaPlayerClass and AxWindowsMediaPlayer and see who would work, but no luck. Help anyone? Is this possible?

Re: WindowsMediaPlayerClass without Forms, is that even possible? "Alessandro Angeli" <nobody[ at ]nowhere.in.the.net> 5/13/2007 6:14:24 PM From: "Eric" [Quoted Text] > Goal: Be able to test a windows media stream via the > command line, and print the output "OK" or "ERR" > depending on the status. I was able to successfully do > it via windows forms: "app.exe http://url/file.wmv" > > Problem: However, these will only work if executed from a > logged-in-desktop's command prompt. When I have the call > executed FROM another NT service, I get an error in the > event viewer: The WMP OCX is a GUI component and you really shouldn't use GUI components in a service. What exactly are you trying to do with WMP? -- // Alessandro Angeli // MVP :: DirectShow / MediaFoundation // mvpnews at riseoftheants dot com // http://www.riseoftheants.com/mmx/faq.htm

Re: WindowsMediaPlayerClass without Forms, is that even possible? Eric 5/15/2007 3:37:02 AM Hi, I'm trying to monitor windows media streams from an NT service. Is that possible? Thanks. "Alessandro Angeli" wrote: [Quoted Text] > From: "Eric" > > > Goal: Be able to test a windows media stream via the > > command line, and print the output "OK" or "ERR" > > depending on the status. I was able to successfully do > > it via windows forms: "app.exe http://url/file.wmv" > > > > Problem: However, these will only work if executed from a > > logged-in-desktop's command prompt. When I have the call > > executed FROM another NT service, I get an error in the > > event viewer: > > The WMP OCX is a GUI component and you really shouldn't use > GUI components in a service. What exactly are you trying to > do with WMP? > > > -- > // Alessandro Angeli > // MVP :: DirectShow / MediaFoundation > // mvpnews at riseoftheants dot com > // http://www.riseoftheants.com/mmx/faq.htm > > >

Re: WindowsMediaPlayerClass without Forms, is that even possible? "Alessandro Angeli" <nobody[ at ]nowhere.in.the.net> 5/15/2007 4:06:30 AM From: "Eric" [Quoted Text] > I'm trying to monitor windows media streams from an NT > service. Is that possible? That depends on what you mean by "monitor windows media streams". If you only want to know whether the service can successfully connect to a publishing point, you can use the WMReader object in the WindowsMediaFormat runtime through COM InterOp: just open the stream URL by calling IWMReader::Open() and look at the HRESULT. -- // Alessandro Angeli // MVP :: DirectShow / MediaFoundation // mvpnews at riseoftheants dot com // http://www.riseoftheants.com/mmx/faq.htm