Hi, The DBus system is now (almost) fully supported in Gambas 3, by the gb.dbus component.
What is DBus ? It is a "message bus system", i.e. a little program that can pass different kinds of messages between applications. It's like the old KDE 3 DCOP system. For more information, see http://dbus.freedesktop.org. There are normally two kind of bus running on your machine: the "system bus", that is global and unique, and the "session bus", that is launched for each connected user. gb.dbus allows you to: (1) Call any method or property exported by any application that is connected with the bus. Example: DBus["org.kde.kmail"]["/kmail/kmail_mainwindow_1"].geometry = [0, 24, 1024, 768] The syntax is: - DBus[<Application>][<Object path>].<Method>(<Arguments>) - DBus[<Application>][<Object path>].<Property> <Application> can begin with "system://" or "session://" to define which bus you want to connect with. By default you connect with the session bus. (2) Catch any signal raised by any interface. Example: MySignal = New DBusSignal(DBus.System, "org.freedesktop.Hal.Manager", "DeviceAdded") As "DBusSignal" ... Public Sub DBusSignal_Signal(Signal As String, Arguments As Variant[]) ... End (3) Export any Gambas object to DBus, provided that the object inherits DBusObject. Example: Dim hObject As MyClass ' MyClass inherits DBusObject DBus.Register(hObject, "/object/path") The Gambas object is attached to an "object path", because all objects exposed to the DBus by your application is like a hierarchical file system. What is exported? - Public methods whose name has no underscore inside, and whose arguments and return type can be converted to a DBus datatype. - Public properties whose name has no underscore inside, and whose type can be converted to a DBus datatype. As soon as you register at least one object, your application appears on the bus with the name "org.gambas.<application name>". All these methods and properties are exported with an interface name named "org.gambas.<application name>.<class name>". You can test that with the DBus explorer example, or the qdbusviewer Qt4 program. What is not done yet ? - You cannot raise DBus signals yet. - You cannot use Collections yet. Note that the gb.dbus component has a part written in C and a part written in Gambas. The part written in C provide hidden classes (whose name begins with "_") that the part written in Gambas uses to provided the full (and easy!) component interface. Now just play with it and tell me what you think! Regards, -- Benoît Minisini ------------------------------------------------------------------------------ This SF.net email is sponsored by Sprint What will you do first with EVO, the first 4G phone? Visit sprint.com/first -- http://p.sf.net/sfu/sprint-com-first _______________________________________________ Gambas-user mailing list Gambas-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/gambas-user
