Why Image doesnt appear in a Tkinter child frame?

[Elias Alhanatis]

Hello everybody!!

I would like some help with the following problem:
I have the following piece of code:

 
from Tkinter import *
root = Tk()
menuframe=Frame(root,height="1c",width="30c",bg="#d5ab6c",bd=2,relief=RAISED)
menuframe.pack(expand=NO,side=TOP,fill=BOTH)
mainframe=Frame(root,height="19.8c",width="30c",bg="#d5ab3c",bd=2,relief=RAISED)
mainframe.pack()#expand=NO,side=TOP,fill=BOTH)
CN=Canvas(mainframe,height="19.8c",width="30c",bg="#d5ab3c")
images="C:/Python25/pic.GIF"
photo1=PhotoImage(file=images)
CN.create_image("15c","9.9c",image=photo1)
CN.pack()
 
mBar = Frame(menuframe, relief=RAISED, borderwidth=2)
mBar.pack(fill=X,side=LEFT)
 
ArxBtn = makeArxiaMenu()
KinBtn = makeKiniseisMenu()
EktBtn = makeEktyposeisMenu()
VoiBtn = makeVoithitikaMenu()
RytBtn = makeRythmiseisMenu()
EpiBtn = makeEpikoinoniesMenu()
mBar.tk_menuBar(ArxBtn,KinBtn,EktBtn,VoiBtn,RytBtn,EpiBtn)
 
 
root.title('Window App by Elias')
root.geometry("1142x800")
root.mainloop()
 
 

Then , from the buttons of the menu , i can "destroy" the mainframe and recreate it as it should be for the coresponding function.
Here is an example for the code i use in one of the functions:

 
def Polites():
    global mainframe
    mainframe.destroy()
    mainframe=Frame(root,height="19.8c",width="30c",bd=4,relief=RAISED)
    mainframe.pack(anchor=SW)
 
    Pict=Canvas(mainframe,height="19.8c",width="30c",bg="#d5ab3c")
    images="C:/Python25/maria.GIF"
    photo1=PhotoImage(file=images)
    Pict.create_image("15c","9.9c",image=photo1)
    Pict.grid()
 
 

The problem is that the program "refuses" to display any image in the child
widgets of mainframe ( i tried through Canvas and Label ).
The strange things are :
1)All works fine in the initial mainframe ( the picture is displayed ) but in the
next mainframe construction ...no Images.
2) the space of the widget is actually there , and the widgets are responsive for text inserts etc... BUT , no Images.

I am working on Windows Vista , Pyhton 2.5

I would be gratefull for any help on this....

Thank you all in advance...

Elias

[bartonc]

Right off the bat, I notice that you use different geometry managers.
widget.grid() and widget.pack() are not equivalent. NOTE: The geometry managers may not be mixed in a single frame.

If I get some time later, I'll try running you program on my system.

In case you haven't found the Tkinter docs yet: An Introduction to Tkinter.

You'll notice that they are quite old. Generally, Tkinter is not getting much support these days.

Hope that helps,
Barton

[Elias Alhanatis]

Dear Bartonc ,

I thank you for your quick reply to my question.
I know that mixing the layout managers is messy , but i dont think the
problem is there. Here is a simpler example of code i tried which again ,
refuses to draw the images....

 
from Tkinter import *
 
 
def f1():
    mainframe=Frame(root)
    mainframe.pack()
    CN=Canvas(mainframe,height="9.8c",width="15c",bg="#d5ab3c")
    images="C:/Python25/Bother/3.GIF"
    photo1=PhotoImage(file=images)
    CN.create_image("7.55c","4.9c",image=photo1)
    CN.pack()
 
 
def f2():
    mainframe2=Frame(root)
    mainframe2.pack()
    CN=Canvas(mainframe2,height="9.8c",width="15c",bg="#d5ab3c")
    images="C:/Python25/GIFS/5bl.103b.GIF"
    photo1=PhotoImage(file=images)
    CN.create_image("7.5c","4.9c",image=photo1)
    CN.pack()
 
root=Tk()
f1()
f2()
root.mainloop()
 
 

It seems like i am missing something basic here.....

Thanks again for your time... :)

Elias

[bartonc]

Dear Bartonc ,

I thank you for your quick reply to my question.
I know that mixing the layout managers is messy , but i dont think the
problem is there.

Thanks again for your time... :)

Elias

I wasn't suggesting that mixing GMs was the problem, simply warning you about the conflict. What I suggest is that this:

 
def Polites():
    global mainframe
    mainframe.destroy()
    mainframe=Frame(root,height="19.8c",width="30c",bd=4,relief=RAISED)
    mainframe.pack(anchor=SW)
 
    Pict=Canvas(mainframe,height="19.8c",width="30c",bg="#d5ab3c")
    images="C:/Python25/maria.GIF"
    photo1=PhotoImage(file=images)
    Pict.create_image("15c","9.9c",image=photo1)
    Pict.grid()
 
 

(as you said) works because it uses widget.grid() instead of .pack().

[Elias Alhanatis]

Just to close this thread ( in case anyone wondered what was the problem..):

The absense of the picture was due to a bug in PIL , which is fixed
if you append your images to a list, so the program "keeps them in mind",
else , they get forgoten , and blank space appears in their place.

Au revoir!!!

Elias