GTK4_GG_hack/dialog.c

#include "callback.h"

void dialog_window_design (GtkWindow *main_window, GtkWindow *dialog_window){
  char *title =  "     Save the current model before modifying it?     ";
  GtkWidget *header_bar = GTK_WIDGET (gtk_header_bar_new ());
  gtk_header_bar_set_title_widget (GTK_HEADER_BAR (header_bar), gtk_label_new (title));
  gtk_window_set_titlebar (dialog_window, header_bar);

  GtkWidget *dialog_window_grid = gtk_grid_new ();

  const char *txt = "                       SAVE CURRENT MODEL                          ";
  GtkButton *action_save_current_model = GTK_BUTTON (gtk_button_new_with_label (txt));
  gtk_widget_set_sensitive (GTK_WIDGET (action_save_current_model), FALSE);
  g_signal_connect (action_save_current_model, "clicked",
                    G_CALLBACK (on_WRITE_CURRENT_MODEL), dialog_window);

  GtkButton *click_yes = GTK_BUTTON (gtk_button_new_with_label ("YES"));
  g_signal_connect (click_yes, "clicked",
                    G_CALLBACK (on_SAVE_CURRENT_MODEL_BEFORE_EDITING), action_save_current_model);

  GtkButton *click_no = GTK_BUTTON (gtk_button_new_with_label ("NO"));
  g_signal_connect (click_no, "clicked",
                    G_CALLBACK (on_DISCARD_CURRENT_MODEL_AND_START_EDITING), dialog_window);

  gtk_grid_attach (GTK_GRID (dialog_window_grid), GTK_WIDGET (click_yes), 0, 0, 1, 1) ;
  gtk_grid_attach (GTK_GRID (dialog_window_grid), GTK_WIDGET (click_no), 1, 0, 1, 1) ;
  gtk_grid_attach (GTK_GRID (dialog_window_grid), GTK_WIDGET (action_save_current_model), 0, 2, 2, 1) ;
  gtk_window_set_child (GTK_WINDOW (dialog_window), GTK_WIDGET (dialog_window_grid));

  gtk_window_set_transient_for (GTK_WINDOW (dialog_window), GTK_WINDOW (main_window));
  gtk_window_set_destroy_with_parent (GTK_WINDOW (dialog_window), TRUE);
  gtk_window_set_deletable (GTK_WINDOW (dialog_window), FALSE); //  FALSE
  gtk_window_set_modal (GTK_WINDOW (dialog_window), TRUE);
//  gtk_window_present (GTK_WINDOW (dialog_window));  see button...
}