+- Python Forum (https://python-forum.io)
+-- Forum: Python Coding (https://python-forum.io/forum-7.html)
+--- Forum: GUI (https://python-forum.io/forum-10.html)
+--- Thread: [Tkinter] output to canvas widget (/thread-1070.html)
output to canvas widget - freakbot - Dec-01-2016
First post here on this new forum.
I'm trying to get a windows 'dir' command output to display in a canvas widget. Ultimately I want to built an interactive program than will display the output in the canvas widget; this is the first step to get it working.
from Tkinter import *
import subprocess
class window:
def __init__(self, parent):
self.frame=Frame(parent)
self.frame.pack()
self.gobutton = Button(self.frame, text="Go", command=self.dircall)
self.gobutton.grid(row=0, column=1)
self.canvas = Canvas(root, width = 100, height = 100, bg = "white")
self.canvas.pack()
def dircall(self):
output=subprocess.call(["dir", "c:"], shell=True)
self.canvas.create_text(25, 25, text=output, tags="text")
root = Tk()
root.geometry("200x200")
runit=window(root)
root.mainloop()When started the GUI opens and then when the button is clicked the output is a 0 and the output from the dir command goes to the run output part of my IDE. I don't get and error, it just doesn't quite do what I want it to.Any help pointing me to the solution would be appreciated.
RE: output to canvas widget - heiner55 - Dec-01-2016
"0" means that the "dir"-command was processed successfully.
You could use check_output():
output=subprocess.check_output(["dir", "c:"], shell=True)
RE: output to canvas widget - Larz60+ - Dec-01-2016
I modified a bit, you'll need a bigger Canvas or a smaller font
from Tkinter import *
# import subprocess
import os
class Window:
def __init__(self, parent):
self.frame = Frame(parent)
self.frame.pack()
self.gobutton = Button(self.frame, text="Go", command=self.dircall)
self.gobutton.grid(row=0, column=1)
self.canvas = Canvas(root, width=100, height=100, bg="white")
self.canvas.pack()
def dircall(self):
# output = subprocess.call(["dir", "c:"], shell=True)
# self.canvas.create_text(25, 25, text=output, tags="text")
output = os.listdir('C:/')
x = 5
y = 10
for line in output:
print(line)
self.canvas.create_text(x, y, text=line, tags='text', anchor='nw')
y += 10
root = Tk()
root.geometry("200x200")
runit = Window(root)
root.mainloop()