The Symbian platform provides AVKON controls, which are a convenient set of UI components designed specifically for devices based on the Symbian platform.
Commonly used AVKON controls include:
queries
All of the AVKON resources listed above, except dialogs, queries and notes, are non-window-owning controls. This means that they cannot exist on the screen without being inside another control.
Since AVKON UI resources scale automatically according to screen resolution and orientation, it is recommended that you consider using AVKON or AVKON-derived components in your application UI as they may require less implementation effort. Custom CCoeControl-derived controls may require additional efforts to support scalability and themes.