GTK Application doesn't quit from dialog - c

Question

I'm programming my first bigger GTK+-Application and i have some troubles with exiting the application.
I want to have a Quit-Button in a dialog box, because normally you should run the program in full-screen-mode.
First I tried to call "gtk_main_quit" direktly from a signal but it also didn't work. Now i tried it through an event, the console output works but "gtk_main_quit" doesn't do anything!
Can somebody explain what I'm doing wrong? If you want to give me some tips for better coding, I will really welcome that, too!
Thanks for you help in advance!
#include <stdlib.h>
#include <gtk/gtk.h>
#include <time.h>
static gboolean gtk_delete_event(GtkWidget *widget, GdkEvent *event, gpointer data)
{
g_message("delete event occured\n");
gtk_main_quit();
return TRUE;
}
static void check_toggle_fullscreen (GtkToggleButton *checkButton_fullscreen, GtkWindow *window)
{
if (gtk_toggle_button_get_active(checkButton_fullscreen))
{
gtk_window_fullscreen(GTK_WINDOW(window));
}
else
{
gtk_window_unfullscreen(GTK_WINDOW(window));
}
}
static gboolean double_clicked (GtkWidget *eventbox, GdkEventButton *event, GtkWindow *window)
{
GtkWidget *dialog, *hbox, *checkButton_fullscreen, *image, *button_preferences, *button_closeApp;
dialog = gtk_dialog_new_with_buttons("Schnelleinstellung", window, GTK_DIALOG_MODAL, GTK_STOCK_OK, GTK_RESPONSE_OK, NULL);
checkButton_fullscreen = gtk_check_button_new_with_label("Fullscreen");
image = gtk_image_new_from_stock(GTK_STOCK_FULLSCREEN, GTK_ICON_SIZE_BUTTON);
hbox = gtk_hbox_new(FALSE, 10);
gtk_box_pack_start_defaults (GTK_BOX(hbox), image);
gtk_box_pack_start_defaults (GTK_BOX(hbox), checkButton_fullscreen);
if (gdk_window_get_state(gtk_widget_get_window(GTK_WIDGET(window))) & GDK_WINDOW_STATE_FULLSCREEN)
{
gtk_toggle_button_set_active(GTK_TOGGLE_BUTTON(checkButton_fullscreen), TRUE);
}
button_closeApp = gtk_button_new_from_stock(GTK_STOCK_QUIT);
button_preferences = gtk_button_new_from_stock(GTK_STOCK_PREFERENCES);
//Fill dialog with content
gtk_box_pack_start_defaults(GTK_BOX(GTK_DIALOG(dialog)->vbox), hbox);
gtk_box_pack_start_defaults(GTK_BOX(GTK_DIALOG(dialog)->vbox), button_preferences);
gtk_box_pack_start_defaults(GTK_BOX(GTK_DIALOG(dialog)->vbox), button_closeApp);
g_signal_connect(G_OBJECT(checkButton_fullscreen), "toggled", G_CALLBACK(check_toggle_fullscreen), (gpointer)window);
g_signal_connect(G_OBJECT(button_closeApp), "clicked", G_CALLBACK(gtk_delete_event), NULL);
if (event-> type == GDK_2BUTTON_PRESS)
{
gtk_widget_show_all(dialog);
gtk_dialog_run(GTK_DIALOG(dialog));
gtk_widget_destroy(dialog);
}
return FALSE;
}
int main (int argc, char *argv[])
{
GtkWidget *window;
GtkWidget *vbox;
GtkWidget *vbox2;
GtkWidget *label[5];
GtkWidget *frame1, *frame2;
GtkWidget *eventbox;
PangoFontDescription *font;
gtk_init(&argc, &argv);
//Window_TOPLEVEL
window = gtk_window_new(GTK_WINDOW_TOPLEVEL);
gtk_window_set_title(GTK_WINDOW(window),"Abnahme");
gtk_window_maximize(GTK_WINDOW(window));
gtk_window_set_position(GTK_WINDOW(window), GTK_WIN_POS_NONE);
gtk_window_set_decorated(GTK_WINDOW(window), TRUE);
vbox = gtk_vbox_new(FALSE, 10);
vbox2 = gtk_vbox_new(FALSE, 10);
frame1 = gtk_frame_new("Naechster Skid");
frame2 = gtk_frame_new("Warteschlange");
eventbox = gtk_event_box_new();
gtk_frame_set_shadow_type(GTK_FRAME(frame1), GTK_SHADOW_IN);
gtk_frame_set_shadow_type(GTK_FRAME(frame2), GTK_SHADOW_IN);
label[0] = gtk_label_new("1");
font = pango_font_description_from_string("Arial 40");
gtk_widget_modify_font(label[0], font);
gtk_label_set_markup(GTK_LABEL(label[0]), "<b>Erster Skid</b>");
int j = 1;
while(j<5)
{
gchar buffer[10];
label[j] = gtk_label_new("0");
g_snprintf(buffer, sizeof(buffer), "%i",j+1);
gtk_label_set_markup(GTK_LABEL(label[j]), buffer);
gtk_widget_modify_font(label[j], font);
j++;
}
//Level 0
gtk_container_add(GTK_CONTAINER(window), eventbox);
gtk_event_box_set_above_child(GTK_EVENT_BOX(eventbox), TRUE);
gtk_container_add(GTK_CONTAINER(eventbox), vbox);
//Level 1
gtk_box_pack_start(GTK_BOX(vbox),frame1, TRUE, TRUE, 0);
//Level 2
gtk_container_add(GTK_CONTAINER(frame1), label[0]);
//Level 1
gtk_box_pack_start(GTK_BOX(vbox),frame2, TRUE, TRUE, 0);
//Level 2
gtk_container_add(GTK_CONTAINER(frame2), vbox2);
//Level 3
int i = 1;
while(i<5)
{
gtk_box_pack_start(GTK_BOX(vbox2), label[i], TRUE, TRUE, 0);
i++;
}
//Signals
g_signal_connect_swapped(G_OBJECT(window), "destroy", G_CALLBACK(gtk_delete_event), NULL);
g_signal_connect(G_OBJECT(eventbox), "button_press_event", G_CALLBACK(double_clicked), (gpointer) window);
gtk_widget_set_events(eventbox, GDK_BUTTON_PRESS_MASK);
gtk_widget_realize(eventbox);
/* Enter the main loop */
gtk_widget_show_all (window);
gtk_main ();
return 0;
}

Answer 1

gtk_dialog_run() enters a recursive main loop. gtk_main_quit() only exits the innermost recursion of the main loop.
I don't know if GTK+ provides a clean way to do what you want; you might have to do that yourself somehow.

Answer 2

To delete gtk_dialog_run() and gtk_widget_destroy() like under the code is available to quit dialog button.
if (event-> type == GDK_2BUTTON_PRESS)
{
gtk_widget_show_all(dialog);
/*
* gtk_dialog_run(GTK_DIALOG(dialog));
* gtk_widget_destroy(dialog);
*/
}
It seems that the reason is running dialog is blocking to quit app.