Tkinter: button image not displayed!?

[John Grayson]

In article <956h9g$5gl$1 at news.tpi.pl>,
  "Tomasz Lisowski" <lisowski.tomasz at sssa.NOSPAM.com.pl> wrote:

## ------  the problem  lies somewhere below -------
Button(fr, image=PhotoImage(file="H:\\Back.gif", master=fr), command =
f).grid(row=0, column=3, padx=2)
Button(fr, text="Add", width=7, command=f).grid(row=1, column=0, padx=2)
Button(fr, text="Walk", width=7, command=f).grid(row=1, column=1,
padx=2) Button(fr, text="Exit", width=7,
command=master.destroy).grid(row=1, column=2, padx=2)
Button(fr, image=PhotoImage(file="H:\\Forward.gif", master=fr), command
= f).grid(row=1, column=3, padx=2)
fr.grid(row=0, column=4, rowspan=2, sticky=E, pady=4)
>
>

Yes, it does!

You have to keep the image you create aroung, so that
it does not go out of scope and get garbage-collected: fix the code
something like this:

img1 = PhotoImage(file="H:\\Back.gif", master=fr)
Button(fr, image=img1, command = f).grid(row=0, column=3, padx=2)

Button(fr, text="Add", width=7, command=f).grid(row=1, column=0, padx=2)
Button(fr, text="Walk", width=7, command=f).grid(row=1, column=1,
       padx=2)
Button(fr, text="Exit", width=7,
       command=master.destroy).grid(row=1, column=2, padx=2)
img2 = PhotoImage(file="H:\\Forward.gif", master=fr)
Button(fr, image=img2, command = f).grid(row=1, column=3, padx=2)

fr.grid(row=0, column=4, rowspan=2, sticky=E, pady=4)

  John


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