How do i read the Title property of a GDK.Window

Question

I'm converting an .NET Windows application for Mono to run on Linux (Ubuntu). One of the features depends on a native library (user32.dll). The Mono guide that talks about conversion of applications (Linux Platform Differences) suggests that one approach would be to modify this code.

I'm trying to use GDK to access the Title of a Gdk.Window that I had access through the property Gdk.Global.ActiveWindow. But I found this error at compile time:

Error CS0154: The property or indexer `Gdk.Window.Title` cannot be used in this context because it lacks the `get` accessor (CS0154) (GetActiveWindow)

If i remove the code that reads de Title property of activeW, everything works fine. There is another way to read this property?

Here my unit of work:

using System;
using Gtk;
using Gdk;
using System.Threading;

namespace GetActiveWindow
{
    class GdkApp : Gtk.Window
    {

        public static void Main ()
        {
            Application.Init ();
            new GdkApp ();
            Application.Run ();
        }

        public GdkApp () : base("Simple App")
        {
            SetDefaultSize (150, 150);
            ShowAll();
            while (true) {
                var activeW = Gdk.Global.ActiveWindow;
                Console.WriteLine("Active Window: {0}",activeW.Title); // Where my compile error happens.
                Console.WriteLine("Simple App Window: {0}",this.Title); // This code works perfectily.
                Thread.Sleep(1000);
            }
        }
    }
}

And what does the code that you are using look like is thee something like this located in `GDK` `gtk_window_get_title` — MethodMan, Apr 28 '13 at 00:55
does the `base` class have a `Title` property..? I am assuming you want to display or have show up in the console `Simple App` — MethodMan, Apr 28 '13 at 01:15
Yes it has. The problem is that the `ActiveWindow` `Title` Property does not have the get accessor, only the set. — Alfredo Cavalcanti, Apr 28 '13 at 02:29
@dj-kraze What i'm trying to do is display the `Title` property of the window that has focus, but not only from my application, from the entire OS. — Alfredo Cavalcanti, Apr 29 '13 at 15:18

score 0 · Answer 1 · answered May 22 '16 at 23:57

I think that with Gdk is imposible. Try it with Wnck library giving to a C compiler this '-DWNCK_I_KNOW_THIS_IS_UNSTABLE' and works but with a warning: Unhandled action type _OB_WM_ACTION_UNDECORATE

Sorry I have used genie instead vala.

//valac *.gs --pkg gtk+-3.0 --pkg libwnck-3.0 -X '-DWNCK_I_KNOW_THIS_IS_UNSTABLE'

init
    Gtk.init(ref args)
    var ventana= new win()
    ventana.inicio()
    ventana.printinfo()
    Gtk.main()


class win:Gtk.Window

    won:weak GLib.List of Wnck.Window

    def inicio()

        var button= new Gtk.Button()
        button.clicked.connect(printinfo)
        this.add(button)
        this.show_all()

    def printinfo()
        won= Wnck.Screen.get_default().get_windows()
        won.foreach(allwin)

    def allwin(w:Wnck.Window)
        if w.is_skip_tasklist() or w.is_skip_pager()
            pass
        else
            print w.get_name()

Note: The program gets the name of all windows when the button is clicked. — txasatonga, May 23 '16 at 00:02

How do i read the Title property of a GDK.Window

1 Answers1