Re: Gtk::Dialog::on_delete_event() is never called

[Tobias Eberle <tobias eberle gmx de>]

Hallo,

> > I want to prevent that the user can close a dialog (derived from
> > Gtk::Dialog) by clicking on the X. I tried to override
> > on_delete_event():
> This shold work. Try a simple test case. It certainly works with
> Gtk::Window. You might also investigate on_response().

It works with Gtk::Window, but it doesn't with Gtk::Dialog. Try the
following test program:

#include <gtkmm.h>
#include <iostream>

class CMyDialog : public Gtk::Dialog
{
  public:
    CMyDialog() : Gtk::Dialog("dialog", true)
    {
      add_button(Gtk::Stock::CANCEL, Gtk::RESPONSE_CANCEL);
      show_all_children();
    }
  protected:
    bool on_delete_event(GdkEventAny *)
    {
      std::cout << "this doesn't work" << std::endl;
      return true;
    }
};

class CMyWindow : public Gtk::Window
{
  public:
    CMyWindow() : Gtk::Window()
    {
      pwButton = Gtk::manage(new Gtk::Button("open dialog"));
      pwButton->signal_clicked().connect(
          sigc::mem_fun(*this, &CMyWindow::on_button_clicked));
      add(*pwButton);
      show_all_children();
    }
  protected:
    Gtk::Button *pwButton;
    void on_button_clicked()
    {
      CMyDialog oMyDialog;
      oMyDialog.run();
    }
    bool on_delete_event(GdkEventAny *pEvent)
    {
      std::cout << "this works" << std::endl;
      return Gtk::Window::on_delete_event(pEvent);
    }
};

int main(int argc, char **argv)
{
  Gtk::Main m(argc, argv);

  CMyWindow oMyWindow;
  Gtk::Main::run(oMyWindow);

  return 0;
}

Bye, Tobias