* - to do
+ - done
- - skipped


+ один список для всех виджетов в cti_application
+ cti_application:__focus_to_top()
+ cti_menu -> в ZOrder
+ cti_optionmenu widget
+ signal-based mechanism (signal->action vs action->signal)
+ gtk_main() nesting
+ center windows
+ widget:realize() method
+ remove __handle_event from CTI_LIST and add methods set_key,apply_key to CTI_WIDGET
+ containers

* menu, menubar and menuitem must be a containers
* cti_widget:__cursor_visible(), cti_widget:__visible()
* styles
* Window:Maximize, Minimize, borders (set_decorations), system buttons
* ScrollBars
* ProgressBars
* Dialogs
* Mouse
