[Gambas-user] gb.dbus and signals

[Fabien Bodard]

Le 26 juin 2015 13:36, "Benoît Minisini" <gambas at ...1...> a
écrit :
>
> Hi,
>
> In revision #7146 I have added to the gb.dbus component the ability to
> raise signals.
>
> How does it work?
>
> All events defined in your DBusObject become DBus signals.
>
> The name of the event must be the name of the interface where all dots
> are replaced by underscore, followed by an underscore and the name of
> the signal. If the event is for the default interface, just the signal
> name is enough.
>
> Don't forget to add the interface name when calling the Register() method.
>
> To actually raise the signal on a specific bus, you don't use the RAISE
> instruction, but the DBus.Session.Raise() or the DBus.System.Raise()
method.
>
> That method takes 3 arguments :
> - The DBus object.
> - The signal name, which is the event name where "_" are replaced by ".".
> - An optional array of signal arguments.
>
> Signal arguments and event signature must match, otherwise I don't know
> what happens. :-)
>
> A little dummy example:
>
> --8<-------------------------------------------------------------------
>
> ' Gambas class file
>
> Inherits DBusObject
>
> Event org_freedesktop_StatusNotifierItem_IconChanged
> Event org_freedesktop_StatusNotifierItem_NewStatus(sStatus As String)
>
> Property Read org_freedesktop_StatusNotifierItem_Category As String
>
> Public Sub org_freedesktop_StatusNotifierItem_Activate(X As Integer, Y
> As Integer)
>
> End
>
> Private Function org_freedesktop_StatusNotifierItem_Category_Read() As
> String
>
> End
>
> ...
>
> Public Sub Main()
>
>    DBus.Session.Register(hObject, "/StatusNotifierItem",
> ["org.freedesktop.StatusNotifierItem"])
>    ' This is needed at the moment so that the current application is
> visible under different names
>    DBus.Session._RequestName("org.freedesktop.StatusNotifierItem-" &
> CStr(Application.Handle) & "-1", True)
>
>    DBus.Session.Raise(hObject,
> "org.freedesktop.StatusNotifierItem.IconChanged")
>    DBus.Session.Raise(hObject,
> "org.freedesktop.StatusNotifierItem.NewStatus", ["Chuck!"])
>
>    Wait 1
>
>    DBus.Session.Unregister(hObject)
>
> End
>
> --8<-------------------------------------------------------------------
>
> I'm currently creating a gb.form.statusicon component that will allow to
> use the new system tray protocol (but not the old one!)
>

Cool 😊

> Regards,
>
> --
> Benoît Minisini
>
>
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