Tizen Developers

Hi~,

You may see
https://developer.tizen.org/development/guides/native-application/user-interface/dali/event-handling .

Hope it will work.
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you can find about widget programming in Help.

Help > Tutorials > Native Application > Application Framework > Widget Application

If your SDK (2.4 r7) does not have contents which titled as "Tutorials", download jar files for here (http://download.tizen.org/sdk/documents/2.4/) and copy them into $TIZEN_SDK_HOME/ide/plugins.

Hello,

Can you explain more?

If you use EFL framework for application and Evas_Object as ui components.

You can add smart callback on button with next function.

evas_object_smart_callback_add(button, "clicked", _clicked_cb, NULL);

Also you can use event callbacks such as EVAS_EVENT_DOWN

evas_object_event_callback_add(layout, EVAS_EVENT_DOWN, _down_cb, NULL);

As I understand.

You should create ui in Widget application, create some button, add "clicked" smart callback, or use event callbacks on layouts or other evas objects.

and in the callback function call app_control module functions to start main UI application by its application_id.

If you explain more about what you wan't, it will be easier to help you.