Question Regarding PIL and PhotoImage classes

[Harlin Seritt]

Why is that I can only get the PhotoImage class to show up when I write
a straight procedural script (no object orientation) but not when I try
to use object-orientation?

These two scripts in theory should produce the same results but they
don't. Is there any reason why?

---Procedural---

root = Tk()
im = Image.open('image.gif')
photo = ImageTk.PhotoImage(im)

label = Label(image=photo)
label.pack()
root.mainloop()

---Object-Oriented---

from Tkinter import *
import Image, ImageTk

class App:

def __init__(self, master):
im = Image.open('dellserver.gif')
photo = ImageTk.PhotoImage(im)

label = Label(master, image=photo)
label.pack()


if __name__ == '__main__':
root = Tk()
app = App(root)
root.mainloop()

---END of CODE---

Thanks,

Harlin Seritt

 

[Fredrik Lundh]

Why is that I can only get the PhotoImage class to show up when I write
a straight procedural script (no object orientation) but not when I try
to use object-orientation?

These two scripts in theory should produce the same results but they
don't. Is there any reason why?

in the second example, the "photo" variable is garbage-collected when the
method returns.

see the note on this page for more info:

http://effbot.org/zone/tkinter-photoimage.htm

</F>