Don't manually connect handlers Glade can connect for us

Don't bother manually connecting handlers that Glade can connect for us
just as well.

data/geany.glade

@@ -6252,6 +6252,8 @@
     <accel-groups>
       <group name="accelgroup1"/>
     </accel-groups>
+    <signal name="window-state-event" handler="on_window_state_event" swapped="no"/>
+    <signal name="delete-event" handler="on_window_delete_event" swapped="no"/>
     <child>
       <object class="GtkVBox" id="vbox1">
         <property name="visible">True</property>
@@ -8319,6 +8321,7 @@
                                 <property name="visible">True</property>
                                 <property name="can_focus">True</property>
                                 <property name="buffer">textbuffer1</property>
+                                <signal name="motion-notify-event" handler="on_motion_event" swapped="no"/>
                               </object>
                             </child>
                           </object>

src/callbacks.c

@@ -74,6 +74,7 @@
 
 
 /* prototypes of Glade-only callback to let the compiler know they really are meant to be exported */
+G_MODULE_EXPORT gboolean on_window_delete_event(GtkWidget *widget, GdkEvent *event, gpointer gdata);
 G_MODULE_EXPORT void on_info1_activate(GtkMenuItem *menuitem, gpointer user_data);
 G_MODULE_EXPORT void on_change_font1_activate(GtkMenuItem *menuitem, gpointer user_data);
 G_MODULE_EXPORT void on_crlf_activate(GtkCheckMenuItem *menuitem, gpointer user_data);
@@ -125,6 +126,7 @@ G_MODULE_EXPORT void on_debug_messages1_activate(GtkMenuItem *menuitem, gpointer
 G_MODULE_EXPORT void on_menu_show_white_space1_toggled(GtkCheckMenuItem *checkmenuitem, gpointer user_data);
 G_MODULE_EXPORT void on_menu_show_line_endings1_toggled(GtkCheckMenuItem *checkmenuitem, gpointer user_data);
 G_MODULE_EXPORT void on_menu_show_indentation_guides1_toggled(GtkCheckMenuItem *checkmenuitem, gpointer user_data);
+G_MODULE_EXPORT gboolean on_window_state_event(GtkWidget *widget, GdkEventWindowState *event, gpointer user_data);
 G_MODULE_EXPORT void on_customize_toolbar1_activate(GtkMenuItem *menuitem, gpointer user_data);
 G_MODULE_EXPORT void on_button_customize_toolbar_clicked(GtkButton *button, gpointer user_data);
 G_MODULE_EXPORT void on_cut_current_lines1_activate(GtkMenuItem *menuitem, gpointer user_data);
@@ -202,7 +204,7 @@ static void quit_app(void)
 
 
 /* wrapper function to abort exit process if cancel button is pressed */
-gboolean on_window_delete_event(GtkWidget *widget, GdkEvent *event, gpointer gdata)
+G_MODULE_EXPORT gboolean on_window_delete_event(GtkWidget *widget, GdkEvent *event, gpointer gdata)
 {
 	main_status.quitting = TRUE;
 
@@ -1952,7 +1954,7 @@ G_MODULE_EXPORT void on_send_selection_to_vte1_activate(GtkMenuItem *menuitem, g
 }
 
 
-gboolean on_window_state_event(GtkWidget *widget, GdkEventWindowState *event, gpointer user_data)
+G_MODULE_EXPORT gboolean on_window_state_event(GtkWidget *widget, GdkEventWindowState *event, gpointer user_data)
 {
 
 	if (event->changed_mask & GDK_WINDOW_STATE_FULLSCREEN)

src/callbacks.h

@@ -28,8 +28,6 @@ G_BEGIN_DECLS
 
 extern gboolean	ignore_callback;
 
-gboolean on_window_delete_event(GtkWidget *widget, GdkEvent *event, gpointer gdata);
-
 G_MODULE_EXPORT void on_new1_activate(GtkMenuItem *menuitem, gpointer user_data);
 
 G_MODULE_EXPORT void on_save1_activate(GtkMenuItem *menuitem, gpointer user_data);
@@ -160,7 +158,7 @@ void on_toolbutton_back_activate(GtkAction *action, gpointer user_data);
 
 void on_toolbutton_forward_activate(GtkAction *action, gpointer user_data);
 
-gboolean on_motion_event(GtkWidget *widget, GdkEventMotion *event, gpointer user_data);
+G_MODULE_EXPORT gboolean on_motion_event(GtkWidget *widget, GdkEventMotion *event, gpointer user_data);
 
 G_MODULE_EXPORT gboolean on_escape_key_press_event(GtkWidget *widget, GdkEventKey *event, gpointer user_data);
 
@@ -176,8 +174,6 @@ G_MODULE_EXPORT void on_find_document_usage1_activate(GtkMenuItem *menuitem, gpo
 
 G_MODULE_EXPORT void on_send_selection_to_vte1_activate(GtkMenuItem *menuitem, gpointer user_data);
 
-gboolean on_window_state_event(GtkWidget *widget, GdkEventWindowState *event, gpointer user_data);
-
 G_MODULE_EXPORT void on_plugin_preferences1_activate(GtkMenuItem *menuitem, gpointer user_data);
 
 G_END_DECLS

src/main.c

@@ -1157,12 +1157,6 @@ gint main(gint argc, gchar **argv)
 	symbols_init();
 	editor_snippets_init();
 
-	/* registering some basic events */
-	g_signal_connect(main_widgets.window, "delete-event", G_CALLBACK(on_window_delete_event), NULL);
-	g_signal_connect(main_widgets.window, "window-state-event", G_CALLBACK(on_window_state_event), NULL);
-
-	g_signal_connect(msgwindow.scribble, "motion-notify-event", G_CALLBACK(on_motion_event), NULL);
-
 #ifdef HAVE_VTE
 	vte_init();
 #endif