From mboxrd@z Thu Jan 1 00:00:00 1970 X-Spam-Checker-Version: SpamAssassin 3.4.4 (2020-01-24) on polar.synack.me X-Spam-Level: X-Spam-Status: No, score=-0.9 required=5.0 tests=BAYES_00,FORGED_GMAIL_RCVD, FREEMAIL_FROM,WEIRD_PORT autolearn=no autolearn_force=no version=3.4.4 X-Received: by 2002:ac8:1e09:: with SMTP id n9mr9059048qtl.284.1572794654759; Sun, 03 Nov 2019 07:24:14 -0800 (PST) X-Received: by 2002:aca:5d8a:: with SMTP id r132mr15687347oib.119.1572794654522; Sun, 03 Nov 2019 07:24:14 -0800 (PST) Path: eternal-september.org!reader01.eternal-september.org!feeder.eternal-september.org!feeder1.usenet.farm!feed.usenet.farm!feeder.usenetexpress.com!tr3.iad1.usenetexpress.com!border1.nntp.dca1.giganews.com!nntp.giganews.com!j16no6745891qtl.0!news-out.google.com!g53ni488qtg.0!nntp.google.com!j16no6745889qtl.0!postnews.google.com!glegroupsg2000goo.googlegroups.com!not-for-mail Newsgroups: comp.lang.ada Date: Sun, 3 Nov 2019 07:24:14 -0800 (PST) In-Reply-To: <0fc7ca20-5641-46e1-9559-970f03267afb@googlegroups.com> Complaints-To: groups-abuse@google.com Injection-Info: glegroupsg2000goo.googlegroups.com; posting-host=2a02:a03f:e3e9:4d00:1260:4bff:fe89:deb2; posting-account=kTRirAoAAACnF_wtAOSamxYBSVvmJuCa NNTP-Posting-Host: 2a02:a03f:e3e9:4d00:1260:4bff:fe89:deb2 References: <254277d5-2ccc-474c-a65d-c5e2def102bd@googlegroups.com> <0fc7ca20-5641-46e1-9559-970f03267afb@googlegroups.com> User-Agent: G2/1.0 MIME-Version: 1.0 Message-ID: Subject: Re: gtkada Connecting via the Gtk.Handlers object_connect problem From: Alain De Vos Injection-Date: Sun, 03 Nov 2019 15:24:14 +0000 Content-Type: text/plain; charset="UTF-8" Xref: reader01.eternal-september.org comp.lang.ada:57452 Date: 2019-11-03T07:24:14-08:00 List-Id: On Sunday, November 3, 2019 at 4:23:12 PM UTC+1, Alain De Vos wrote: > On Sunday, November 3, 2019 at 2:26:37 PM UTC+1, Alain De Vos wrote: > > On Sunday, November 3, 2019 at 2:03:55 PM UTC+1, Dmitry A. Kazakov wrote: > > > On 2019-11-03 12:37, Alain De Vos wrote: > > > > I try an application with one button and one label and one handler > > > > > > > > http://docs.adacore.com/live/wave/gtkada/html/gtkada_ug/signals.html#second-case-using-object-connect-instead > > > > ------------------------- > > > > I have a file myvboxpak.ads -> > > > > package myvboxpak is > > > > > > > > type MyVBoxR is new Gtk_VBox_Record with record > > > > Button : Gtk_Button; > > > > Label : Gtk_Label; > > > > end record; > > > > type MyVBoxT is access all MyVBoxR'Class; > > > > > > > > package MYCB is new Gtk.Handlers.User_Callback(Glib.Object.GObject_Record,MyVBoxT); > > > > > > > > procedure MyButtonClick (T : MyVBoxR'Class); --eventhandler ^^^^^^^^^^^^^^^^^^^ > > > Should have been T : access MyVBoxR'Class > > > > > > -- > > > Regards, > > > Dmitry A. Kazakov > > > http://www.dmitry-kazakov.de > > > > I changed the handler to : > > package body myvboxpak is > > procedure MyButtonClick (T : access MyVBoxR'Class) is > > begin > > begin > > T.Button.Set_Label ("You pressed"); > > ... > > > > Compile error of the connect_object function is still : > > MYCB.Object_Connect > > (Widget => MYVBOX.Button, > > Name => "clicked", > > Marsh => MYCB.To_Marshaller (MyButtonClick'Access), -- The signal handler > > Slot_Object =>Top, > > User_Data => MYVBOX > > ); > > Error : > > Compile > > [Ada] hello.adb > > hello.adb:35:27: no candidate interpretations match the actuals: > > hello.adb:35:56: expected type "Handler" defined at gtk-marshallers.ads:546, instance at gtk-handlers.ads:1164, instance at myvboxpak.ads:17 > > hello.adb:35:56: found type access to procedure "MyButtonClick" defined at line 35 > > hello.adb:35:56: ==> in call to "To_Marshaller" at gtk-handlers.ads:1205, instance at myvboxpak.ads:17 > > Some additional info : > mymarsh : Gtk.Marshallers.General_Handler; > > mymarsh := MYCB.To_Marshaller (Cb => MyButtonClick'Access); > > Error : no candidate interpretations match the actuals expected type "Handler" > > package MYCB is new Gtk.Handlers.User_Callback(Glib.Object.GObject_Record,MyVBoxT); > > MYCB.Object_Connect > (Widget => MYVBOX.Button, > Name => "clicked", > Marsh => mymarsh, > Slot_Object =>Top, > User_Data => MYVBOX, > After => False > ); > > Error : > Marsh => mymarsh, > Expected type marchaller. expected type "Handler" in mymarsh := MYCB.To_Marshaller (Cb => MyButtonClick'Access);