Get program handle and window handle for media session

Question

I want to get information about all currently active media playbacks. I found a way to read out all media sessions here:

using Windows.Media.Control;

namespace ConsoleApp1 {
    public class Program {
        [STAThread]
        static void Main(string[] args) {
            var gsmtcsm = GlobalSystemMediaTransportControlsSessionManager.RequestAsync().GetAwaiter().GetResult().GetSessions();

            foreach (var session in gsmtcsm) {
                var mediaProperties = session.TryGetMediaPropertiesAsync().GetAwaiter().GetResult();
                Console.WriteLine("{0} - {1}", mediaProperties.Artist, mediaProperties.Title);
            }

            Console.ReadKey();
        }
    }
}

Now I want to get the corresponding programs for these sessions. Also, I want to get the window of the program if it exists. My goal is to programmatically move the window if it exists to another screen. The program handle is just used as an identifier.

For example: I open a random .mp4 file. By default, it is played by Windows Films & TV. Now I want to get the session, program, and window (Films & TV has a window) and move it to another screen (by code)

Another example: I watch a video on Youtube. Now I want to get the window of the browser I opened Youtube in.

Answer 1

You can find the main window for the app that is running the media session with

var gsmtcsm = GlobalSystemMediaTransportControlsSessionManager.RequestAsync().GetAwaiter().GetResult().GetSessions();
foreach (var session in gsmtcsm)
{
    string modelId = session.SourceAppUserModelId;
    // Get all processes
    Process[] processlist = Process.GetProcesses();
    // Create and array to hold matched processes
    List<Process> modelProcesslist = new List<Process>();
    // Using a direct filter on the Process.GetProcesses() call will raise an exception, you will need to cycle through them 
    // to find a process that has the same filename as reported by the media session
    // The filename may be different to the process name
    foreach (Process p in processlist)
    {
        try
        {
            if (p.MainModule.FileName.Contains(modelId) && p.MainWindowHandle != IntPtr.Zero)
            {
                modelProcesslist.Add(p);
            }
        }
        catch(System.Exception)
        {
            // Couldn't look at the MainModule of this process, move on
        }
    }
    foreach (Process p in modelProcesslist)
    {
        IntPtr windowHandle = p.MainWindowHandle;
        // The main window(s) for apps that have the same name as the source app for the media session
    }
}

One big issue will be if the main window is owned by chrome.exe (or any tabbed browser), then the media player is in one of the sub tabs, finding content within a tab of the browser is a whole new level of headache.

Also if you have multiple browser windows open, they will all have the same executable name and get picked up by the above code.

If the app is a dedicated media player, you should be able to use the handle to move the window.