I am a newbie to python, but not programming.
I have a menubar item
displaySubMenu.add_command(label="External", command=externalDisplay)
externalDisplay is a new class, which I have already imported. The class is
here:
from Tkinter import *
from datetime import datetime, date, time
import urllib
from PIL import Image
#import Image # PIL required
import ImageTk
backColor = "Gray"
highcolor = "Green"
entryColor = "Cyan"
okColor = "Green"
warnColor = "Red"
class externalDisplay(Frame):
def __init__(self,callSign,nexrad):
"""Initialize yourself"""
self.callSign = callSign
self.nexrad = nexrad
#"""Initialise the base class"""
Frame.__init__(self)
"Set the Window Title"""
#self.title( "Test")
self.findu = "http://www.findu.com/cgi-bin/radar-find.cgi?call="; +
self.callSign + "&radar=" + self.nexrad
"""Display the main window" with a little bit of padding"""
self.grid(padx=5,pady=5)
self.CreateWidgets()
def CreateWidgets(self):
#"""Create all the widgets that we need"""
self.f = Frame(self, bd=0, bg=backColor)
self.title = "netcomm Online Radar"
self.f.grid()
#
# Insert the date and time the radar image was updated
#
self.lblLastUpdate = Label(self.f, text="Last Updated: " +
str(datetime.now()), bg=backColor)
self.lblLastUpdate.grid( row=0, column=0, sticky=W)
self.btnRefresh = Button(self.f, text="Refresh",
command=handlesExternalDisplayByClick,
bg=backColor,highlightbackground=okColor,highlightcolor=highcolor)
self.btnRefresh.grid(row=0, column=1)
self.btnRefresh = Button(self.f, text="Close", command=self.destroy,
bg=backColor,highlightbackground=warnColor,highlightcolor=highcolor)
self.btnRefresh.grid(row=0, column=2)
#
# Start the download from findu
#
#
# This gets the image and saves it to the local disk as "image.png"
#
# NOTE - will ideally want to conver this to GIF and save it using
# the date as part of the filename so the net can be re-created
# for reporting and to create a flipbook of the radar images
#
urllib.urlretrieve(self.findu, "image.png")
Image.open("image.png").save("image.gif")
self.photo = PhotoImage(file="image.gif")
#
# create a canvas of the appropriate size for the image
#
self.w = Canvas(self.f, width=600, height=550)
#
# convert it into a photo item we can use in the display
#
self.netRadarImage = Label(self.w, image=self.photo)
self.netRadarImage.image = self.photo
self.w.grid(row=1, column=0, columnspan=3)
self.netRadarImage.grid( row=1, column=0)
def handlesExternalDisplayByClick(self):
#
# destroy the existing frame the radar is in
#
self.destroy()
#
# rebuild the radarWidgets
#
createRadarWidgets(frameRadar)
def handlesRadarRefreshByClick(self):
#
# destroy the existing frame the radar is in
#
self.destroy()
#
# rebuild the radarWidgets
#
self.update()
if __name__ == "__main__":
guiFrame = externalDisplay("AE5PL-10","fws")
guiFrame.mainloop()
The problem is that the window defined in the class never appears, and I don't
know why. I would like to get all of the code for the window into a single
file which I import, but since I can't make this work right, I don't want to
invest the time yet. Eve worse, is that when I run the code as a standalone
module and click on the close button, I am left with a tk window instead of
the app actually closing.
Any suggestions are appreciated.
--
http://mail.python.org/mailman/listinfo/python-list
