python - Tkinter gui mainloop "ex =" -
hello i'm complete beginner in python , facing problem while creating simple gui in tkinter (trying make simple pong). anyways have code in python 3:
tkinter import frame import tkinter class pong(frame): def __init__(self, parent): frame.__init__(self, parent) self.parent = parent self.parent.bind("<key>", self.key) self.initialize() def key(self, event): if event.char == 'q': #end self.quit() print("end") def initialize(self): print("initialize") pass def main(): root = tkinter.tk() ex = pong(root) root.overrideredirect(true) root.geometry("{0}x{1}+0+0".format(root.winfo_screenwidth(), root.winfo_screenheight())) root.mainloop() main() i'm wondering bottom "ex = pong(root)" part because if delete program doesn't work, cant press q quit, can't find ex means, literally can't find documentation online.
the pong class wrapper frame. represents gui application, , encapsulates (hides away) tkinter gui stuff.
a frame "window" content shown in. root tk master frame. root base window - destroying root destroys (closes) gui.
with in mind, recommend trying following changes:
class pong(frame): ... def key(self, event): if event.char == 'q': #end # close base frame, , our application frame self.parent.quit() self.quit() # wrapper methods root control def overrideredirect( bool ): self.parent.overrideredirect(bool) def geometry(geo_string): self.parent.geometry(geo_string) def mainloop(): self.parent.mainloop() ... def main(): root = tkinter.tk() wdth, hght = root.winfo_screenwidth(), root.winfo_screenheight() ex = pong(root) ex.overrideredirect(true) ex.geometry("{0}x{1}+0+0".format(wdth, hght)) ex.mainloop() you can drive master window using pong. used approach before , found safer - didn't confuse root frame class , make nasty accidents! safer subclassing tk.
also add method pong, generate_gui(), , code setup gui widgets. safer setting widgets main function directly.
check out these in meantime: