#include void on_main_showpreviewtoggle_toggled (GtkToggleButton *togglebutton, gpointer user_data); void on_main_ok_button_clicked (GtkButton *button, gpointer user_data); void on_main_cancel_button_clicked (GtkButton *button, gpointer user_data); void on_main_reset_button_clicked (GtkButton *button, gpointer user_data); gboolean on_main_window_delete_event (GtkWidget *widget, GdkEvent *event, gpointer user_data); void on_main_use_default_font_radio_toggled (GtkToggleButton *togglebutton, gpointer user_data); void on_main_font_selector_button_font_set (GtkFontButton *fontbutton, gpointer user_data); void on_new2_activate (GtkMenuItem *menuitem, gpointer user_data); void on_open2_activate (GtkMenuItem *menuitem, gpointer user_data); void on_save2_activate (GtkMenuItem *menuitem, gpointer user_data); void on_save_as2_activate (GtkMenuItem *menuitem, gpointer user_data); void on_quit2_activate (GtkMenuItem *menuitem, gpointer user_data); void on_cut2_activate (GtkMenuItem *menuitem, gpointer user_data); void on_copy2_activate (GtkMenuItem *menuitem, gpointer user_data); void on_paste2_activate (GtkMenuItem *menuitem, gpointer user_data); void on_delete2_activate (GtkMenuItem *menuitem, gpointer user_data); void on_about2_activate (GtkMenuItem *menuitem, gpointer user_data);