-----------------------------------------------------------------------------
The input method engine SPI tutorial says: "Note: For key events, input
methods should use only KEY_TYPED events to obtain information about
characters being entered, and use KEY_PRESSED or KEY_RELEASED events only
to obtain information about function keys that don't result in KEY_TYPED
events. The mapping from key-presses to characters depends on platforms,
hardware, locales, and possibly other factors, and is best left to the
underlying operating system."

Similarly, the KeyEvent class description says: "Key typed events are
higher-level and generally do not depend on the platform or keyboard
layout. They are generated when a Unicode character is entered, and are
the preferred way to find out about character input." -----------------------------------------------------------------------------

CodePointInputMethod uses KEY_PRESSED event for handling Delete, BackSpace,
Escape, Enter and Tab. KEY_TYPED should be used for handling them instead.