Subscribing to events in external applications - Revision history

Steegy at 13:39, 25 June 2011

2011-06-25T13:39:44Z

← Older revision		Revision as of 13:39, 25 June 2011
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	==Subscribing to events==		==Subscribing to events==
	~~Subscribing~~ to events does not work with external applications~~, like .NET applications if they make the connection to the MediaMonkey application~~. See:		In MediaMonkey 4.0 and above (see [http://www.ventismedia.com/mantis/view.php?id=7920 bug tracking entry]), external applications can subscribe to MediaMonkey events in the same way as they register to other events.
	* [~~https~~://www.mediamonkey.com/forum/viewtopic.php?f=19&t=29201&p=291459 Events don't work with C#]
	* [~~https~~://www.mediamonkey.com/forum/viewtopic.php?f=19&t=45676&p=297214 Trouble With Handling COM Events]
			In older versions however, subscribing to events does not work with external applications. See:
			* [http://www.mediamonkey.com/forum/viewtopic.php?f=19&t=29201&p=291459 Events don't work with C#]
			* [http://www.mediamonkey.com/forum/viewtopic.php?f=19&t=45676&p=297214 Trouble With Handling COM Events]
	A solution is presented in:		A solution is presented in:
	* [http://www.mediamonkey.com/forum/viewtopic.php?f=2&t=14004&hilit=com+events MonkeyToys: VB.NET extension adding MCE remote support]		* [http://www.mediamonkey.com/forum/viewtopic.php?f=2&t=14004&hilit=com+events MonkeyToys: VB.NET extension adding MCE remote support]

Gramatus at 18:01, 29 May 2011

2011-05-29T18:01:07Z

← Older revision		Revision as of 18:01, 29 May 2011
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	</source>		</source>
	* When you now start MediaMonkey it will connect to your application and event firing will work.		* When you now start MediaMonkey it will connect to your application and event firing will work.

			[[Category:.NET]]

Gramatus: Created page with "==Subscribing to events== Subscribing to events does not work with external applications, like .NET applications if they make the connection to the MediaMonkey application. See: ..."

2011-05-29T17:58:53Z

Created page with "==Subscribing to events== Subscribing to events does not work with external applications, like .NET applications if they make the connection to the MediaMonkey application. See: ..."

New page

==Subscribing to events==
Subscribing to events does not work with external applications, like .NET applications if they make the connection to the MediaMonkey application. See:
* [https://www.mediamonkey.com/forum/viewtopic.php?f=19&t=29201&p=291459 Events don't work with C#]
* [https://www.mediamonkey.com/forum/viewtopic.php?f=19&t=45676&p=297214 Trouble With Handling COM Events]
A solution is presented in:
* [http://www.mediamonkey.com/forum/viewtopic.php?f=2&t=14004&hilit=com+events MonkeyToys: VB.NET extension adding MCE remote support]

===Walkthrough===
This solution is based on making your assembly ComVisible, registering it and letting an auto-script in MediaMonkey create your application object. This can be accomplished by creating a class along the lines under.
* First build and run your program, then call the RegisterCOM() Method to register your application with COM.
''(continued after C#-code)''

<source lang="csharp">
using System.Reflection;
using System.Runtime.InteropServices;
using SongsDB;

namespace SomeNamespace {
[ComVisible(true)] // this overrides [assembly: ComVisible(false)] (is set by project options dialog) so registry don't get bloated with unneeded types
public class EventTest {
public SDBApplication SDB { get; private set; }

public static void RegisterCOM() {
RegistrationServices rs = new RegistrationServices();
rs.RegisterAssembly(Assembly.GetExecutingAssembly(),
AssemblyRegistrationFlags.SetCodeBase);
}
public static void UnRegisterCOM() {
RegistrationServices rs = new RegistrationServices();
rs.UnregisterAssembly(Assembly.GetExecutingAssembly());
}
public void Init(SDBApplication mm) {
this.SDB = mm;
this.SDB.set_Objects(Assembly.GetExecutingAssembly().GetName().Name, this);
this.SDB.OnPlay += () => { System.Windows.MessageBox.Show("OnPlay event fired!"); };
}
}
}
</source>
* Add an autoscript-to mediamonkey (ie. a file in ...\MediaMonkey\Scripts\Auto) named SomeScript.vbs that starts your application and runs the Init function. It's contents should be like this:
<source lang="vb">
Sub OnStartup
Set o = CreateObject("SomeNamespace.EventTest")
o.Init(SDB)
End Sub
</source>
* When you now start MediaMonkey it will connect to your application and event firing will work.