Hi,
I am struggling to get the pack method to do what I intend.
I am trying to display user input in a seperate window, along with
a little description of the field, something like this:
Current entry
Company : entered co. name
First entry : entered stuff
The second entry: more entered stuff
Entry number three : Last entered stuff
This seems so simple - but I have now spent a day or two mucking around -
and no matter what I do with the side, after and anchor parameters,
I just seem to get weird results - I must be doing something terribly stupid,
but I cant see it
So I have boiled the thing down as far as I can. - to an entry window with a
start and quit button,
one entry method, and the display window for the entered content - aside from
displaying, the programme does nothing.
Its doing the same thing on Linux and on Windows
This code should run and illustrate the hassles I am having:
8<-----------------------------start of code section--------------------------
#!/usr/bin/python
# The original of this module is supposed to do an accounting entry -
# we get the gui stuff
from Tkinter import *
class Entryscreen(Frame):
"""This screen is used to construct a new Entry."""
# we define the variables we use
des_string = '' # Description of what we want to do
req_string = '' # Prompt string
dis_string = '' # Description of field for display
Company = "New Entry Screen" # we dont have a company yet
Entry_1 = '' # or any entries
Entry_2 = ''
Entry_3 = ''
def start_new(self):
"""This is the routine that assembles a new record"""
if self.Company == "New Entry Screen": # if its the first time,
# we make a new window
show = Tk()
show.title('Accounting entry display window')
# we get an instance to display results in
self.disp = Showscreen("Current entry",master=show)
# then we ask for the company:
des_string = "Getting the Company "
req_string = "Enter the Company for this session"
dis_string = 'Company:'
error = self.GetEntry(des_string, req_string, dis_string, self.disp)
self.Company = self.Amount
# Then or else we ask for entry details
des_string = "Getting first entry"
req_string = "Enter first field"
dis_string = "First entry:"
error = self.GetEntry(des_string, req_string, dis_string, self.disp)
des_string = "Getting second entry"
req_string = "Enter second field"
dis_string = "The second entry:"
error = self.GetEntry(des_string, req_string, dis_string, self.disp)
des_string = "Getting third entry"
req_string = "Enter third field"
dis_string = "Entry number three:"
error = self.GetEntry(des_string, req_string, dis_string, self.disp)
def GetEntry(self, des_string, req_string, dis_string, disp):
"""Entry routine for one field"""
line = Entryline(des_string, req_string, dis_string, disp, master=root)
error = line.mainloop()
self.Amount = line.retstring
line.destroy()
def say_bye(self):
print 'Have a nice day, Bye!'
self.quit()
def createWidgets(self):
self.descr = Label(self)
self.descr["text"] = self.Company
self.descr["fg"] = 'purple'
self.descr['bg'] = 'yellow'
self.descr.pack({'expand': 'yes', 'fill': 'both', "side": "top"})
Start = Button(self)
Start["text"] = "Start a new entry"
Start["fg"] = "blue"
Start['bg'] = 'green'
Start["command"] = self.start_new
Start.pack({'expand': 'yes', 'fill': 'both', "side": "left", 'after':
self.descr})
QUIT = Button(self)
QUIT["text"] = "QUIT"
QUIT["fg"] = "black"
QUIT['bg'] = 'red'
QUIT["command"] = self.say_bye
QUIT.pack({'expand': 'yes', 'fill': 'both', "side": "left", 'after':
Start})
def __init__(self, master=None):
Frame.__init__(self, master)
self.pack()
self.createWidgets()
class Showscreen(Frame):
"""This is supposed to show the entries as they occur."""
def CreateWidgets(self, Description):
self.descr = Label(self)
self.descr["text"] = Description
self.descr["fg"] = 'purple'
self.descr['bg'] = 'yellow'
self.descr.pack({'expand': 'yes', 'fill': 'x', "side": "top", "anchor":
"n"})
def __init__(self, Description, master=None):
Frame.__init__(self,master)
self.pack()
self.CreateWidgets(Description)
class Entryline(Frame):
"""This asks for an entry from the user and displays the result"""
retstring = ''
def entryend(self,S):
"""This gets done on carriage return and is where the hassles
originate"""
self.retstring = self.estring.get() # get the entered string
self.disp.Amount_des = Label(self.disp) # and put it into the
display window
self.disp.Amount_des["text"] = self.dis_string
self.disp.Amount_des["fg"] = 'purple'
self.disp.Amount_des['bg'] = 'yellow'
self.disp.Amount_des.pack({'expand': 'yes', 'fill': 'x', "side":
"left"})
self.disp.Amount = Label(self.disp)
self.disp.Amount["text"] = self.retstring
self.disp.Amount["fg"] = 'blue'
self.disp.Amount['bg'] = 'green'
self.disp.Amount.pack({'expand': 'yes', 'fill': 'x', "after":
self.disp.Amount_des})
self.quit() # That's it, folks
def createWidgets(self, des_string, req_string):
"""makes the stuff to ask the question"""
descr = Label(self)
descr["text"] = des_string
descr["fg"] = 'purple'
descr['bg'] = 'yellow'
descr.pack({'expand': 'yes', 'fill': 'both', "side": "top"})
req = Label(self)
req ["text"] = req_string
req ["fg"] = 'yellow'
req ['bg'] = 'blue'
req.pack({'expand': 'yes', 'fill': 'both', "side" :"top",'after':
descr})
self.estring = Entry(self)
self.estring['fg'] = 'black'
self.estring['bg'] = 'white'
self.estring.pack({'expand':'yes','fill': 'both', 'side': 'top',
'after': req})
self.estring.bind('<Key-Return>', self.entryend)
self.estring.focus_set()
def __init__(self, des_stringP, req_stringP, dis_stringP, dispP, master):
self.disp = dispP # keep the passed params in instance vars
self.des_string = des_stringP
self.req_string = req_stringP
self.dis_string = dis_stringP
Frame.__init__(self, master)
self.pack()
self.createWidgets(self.des_string, self.req_string)
root = Tk()
root.title('Accounting Entry Window')
app = Entryscreen(master=root)
app.mainloop()
root.destroy()
8<----------------------------------end of code section-------------------
can anybody see what I am doing wrong?
- Hendrik
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