must implement in order to be able to create the user interface with the
library. The idea is that the application can implement whatever user
interface routines in the functions and display the data whatever way
it wants. The library is entirely transparent to the user interface and
it does not include any user interface specific issues such as window
handling or item handling on the screen etc. These does not interest
must implement in order to be able to create the user interface with the
library. The idea is that the application can implement whatever user
interface routines in the functions and display the data whatever way
it wants. The library is entirely transparent to the user interface and
it does not include any user interface specific issues such as window
handling or item handling on the screen etc. These does not interest