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 <kjellahlst...@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(); >> > >> > >> > _______________________________________________ > gtkmm-list mailing list > gtkmm-list@gnome.org > https://mail.gnome.org/mailman/listinfo/gtkmm-list >
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