Macs:
"if we follow your advice we should do:
immagine_1a = PhotoImage()
....
instead, but it doesn't work. why? "
Images are a special case. You need to create an object instance of
them through the self. construction or else Tkinter seems to forget
about them within a couple of lines of code. so yes, just use
self.immagine_1a and it should work.
lots of good information on:
http://tkinter.unpy.net/wiki
I took a quick look at your app but the button doesn't open the 2nd
window. I see that you sent your message a few days ago so you've
probably solved that problem by now.
S
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