Functions acting strange when run as thread in Kivy/Python -


i building app that, when user hits 'run' button, generates table of buttons.

because process takes while, want add popup or progress bar alert user function running , not frozen. decided create popup , call function using threading screen updated when function starts (as opposed once done).

mythread = threading.thread(target=run_function) mythread.start() 

the trouble when call function above code works strangely: columns of table wrong width, of buttons arbitrarily empty, , others have wrong fill color. fix this, need remove threading operation , call run_function()

any idea why happening?

i new python, dumb mistake, have no idea. different between process running thread , default operation?

disclaimer: haven't worked kivy.

not every framework works multithreading.

but of gui frameworks have event loop responsible managing user events (mouse clicks, keyboard) , queued drawing operations (widgets).

in case if don't want ui freezed, should regularly give control framework's event loop.

i guess kivy.base.eventloopbase.dispatch_input need call show added widget or handle user events.


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