Setting kivy window size not working

Question

I follwed this stackoverflow question, but neither alternatives worked.

This is my code:

from kivy.app import App
from kivy.uix.label import Label
from kivy.core.window import Window

class MyApp(App):
    def build(self):
        return Label(text='text')

if __name__ == '__main__':
    Window.size = (1366, 768)
    MyApp().run()

Sometimes the size works, Kivy creates a screen with size 800x600 then changes it to 1366x768. And sometimes Kivy creates a screen with size 800x600 then changes it to 1366x768, but then back to 800x600.

And if I change my code to:

from kivy.app import App
from kivy.uix.label import Label
from kivy.core.window import Window

from kivy.config import Config
Config.set('graphics', 'width', '200')
Config.set('graphics', 'height', '200')

class MyApp(App):
    def build(self):
        return Label(text='text')

if __name__ == '__main__':
    MyApp().run()

With this code, nothing happens on my screen. I'm using Kivy v1.9.2-dev0. What I should do to fix it?

It worked for me a few days ago. Try if something smaller works. Isn't there any message in log? — Peter Badida, May 03 '16 at 06:35
There should be a message like `[DEBUG] [Window] Resize window to (x, y)` if it's resized correctly. Is there any other message? The best would be to paste the whole log here and other info such as OS, 32/64, window provider, etc. And from that size I guess you want to achieve fullscreen, therefore try to use `Window.fullscreen = True` too. — Peter Badida, May 03 '16 at 09:29
This my log, https://bpaste.net/show/3105907ff5a3. I'm using Gentoo Linux - 64bits, xfce default window manage and fullscreen works. — Carlos Porta, May 03 '16 at 11:40
Mayve pygame doesn't work well with master branch. Try sdl2, the default provider now. — Peter Badida, May 03 '16 at 11:43

score 15 · Answer 1 · answered May 03 '16 at 11:24

15

Put the Config settings before all the other imports - it's too late after importing Window, as the config has already been accessed to determine its initial size and your new settings are ignored.

answered May 03 '16 at 11:24

inclement

29,124
4
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60

Thank you inclement, it worked. Do know why changing size using Window works just sometimes? – Carlos Porta May 03 '16 at 11:44
Sounds like a race condition, I'm not sure why exactly it happens but it's probably to do with lots of things happening when the app is first started. – inclement May 03 '16 at 11:54

score 6 · Accepted Answer · answered May 04 '16 at 18:21

Make your window non-resizable

from kivy.config import Config
Config.set('graphics','resizable',0)

set the window size

from kivy.core.window import Window
Window.size = (600, 500)

see example at https://kivyapps.wordpress.com/video-streaming-using-kivy-and-python/

score 0 · Answer 3 · answered Jul 23 '23 at 15:50

0

def on_size(self,*args):#this funciton is written becase default size of canvas is 100*100 when done from code
    #print("on size : "+ str(self.width) +","+str(self.height))

answered Jul 23 '23 at 15:50

Vishwanath Tigadi

1

Remember that Stack Overflow isn't just intended to solve the immediate problem, but also to help future readers find solutions to similar problems, which requires understanding the underlying code. This is especially important for members of our community who are beginners, and not familiar with the syntax. Given that, **can you [edit] your answer to include an explanation of what you're doing** and why you believe it is the best approach? – Jeremy Caney Jul 25 '23 at 00:22

Setting kivy window size not working

3 Answers3

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