Re: Add Gtk::TextView to Gtk::Grid

[Rodolfo Ribeiro Gomes <rodolforg gmail com>]

If you are gtkmm3, widgets are hidden by default.

You should call Gtk::Container::show_all_children() or Gtk::Widget::show_all().

AFAIK, in gtkmm4 this isn't necessary anymore, as widgets are (finally) visible by default.

Em qui., 6 de out. de 2022 às 07:33, Bill Greene via gtkmm-list <gtkmm-list gnome org> escreveu:

Thanks for taking a look at this.

Unfortunately, even after I make the TextView   a class member, I still don't see the text displayed in the window.

A concise description of the problem is this: 

If I make the TextView a child of the window, the text is displayed. If I make the TextView a child of a Grid, and the

Grid a child of the window, the text is not displayed.

I am assuming there might be some property of the Grid I need to set?

On Wed, Oct 5, 2022 at 12:40 PM Kjell Ahlstedt <kjellahlstedt gmail com> wrote:

You have declared the TextView  as a local variable in the constructor.
It will be deleted when the constructor finishes. You must either
declared it in your window class, like the buttons in

https://gitlab.gnome.org/GNOME/gtkmm-documentation/-/blob/master/examples/book/grid/examplewindow.h

or create it with Gtk::make_managed() in the constructor, like the button in

https://gitlab.gnome.org/GNOME/gtkmm-documentation/-/blob/master/examples/book/scrolledwindow/examplewindow.cc

Den 2022-10-05 kl. 17:00, skrev Bill Greene via gtkmm-list:
> I am trying to add a TextView instance to a Grid. But when I display
> the window, it is
> empty. The Grid examples I have seen add buttons to the grid and these
> work fine
> for me. But I don't understand the difference between adding a button
> and adding
> a TextView. If anyone can help me with this, I would appreciate it.
>
> Here is my sample code (part of the constructor for my window):
>
>   set_child(m_grid);
>   Gtk::TextView tc;
>   Glib::RefPtr<Gtk::TextBuffer> tb = Gtk::TextBuffer::create();
>   std::string msg("cell 1,1");
>   auto it = tb->insert(tb->begin(), msg);
>   tc.set_buffer(tb);
>   m_grid.attach(tc, 0, 0);
>   m_grid.set_visible();
>
>

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