racket - Giving the user some information on the run status of my program -

racket - Giving the user some information on the run status of my program -

i made simple gui racket batch info processing programme accepts user specified input file , writes user specified output file. 1 time user has specified files, have click "run" button. programme works, gui becomes unresponsive while running batch processing logic. since can take long time finish, want give user assurance hasn't crashed. how can avoid unresponsiveness (at to the lowest degree frozen window part)?

run batch processing in thread.

see racket docs on thread

user-interface racket