Shalom and howdy-do Lab! What are you interested in and what skills are you anxious about?
Don't spend too much time in the Geek's Lounge. The stick-in-the-muds will pull you down to their level and make a conservative out of you. Who needs more of those? :)
Hello everyone, I am a newbie her and also to the python programing language, I m trying to learn wxPython........
Welcome, see you in the DaniWeb Python Forum then. Read though the "Starting wxPython" sticky and ask question in the Python forum. Many of us are glad to help! http://www.daniweb.com/forums/thread128350.html
Using wx.StaticBitmap() to show an image. Here we position the image in the center of the frame. Actually, the center of the panel that fills the frame:
# show a .jpg .png ,gif .bmp image using a wx.StaticBitmap()
# wx.StaticBitmap(parent, id, label, pos, size, style)
# calculate pos so image is in center
import wx
class ImagePanel(wx.Panel):
""" create a panel with a wx.StaticBitmap """
def __init__(self, parent):
wx.Panel.__init__(self, parent, wx.ID_ANY)
# pick an image file you have in the working folder
# (can be a .jpg .png ,gif or .bmp image file)
image_file = 'chemist.gif'
bmp = wx.Bitmap(image_file)
# get the width and height of the image
wi, hi = bmp.GetSize()
# get the width and height of the frame
wf, hf = parent.GetSize()
# calculate position so image is centered
px = wf/2 - wi/2
# 15 is estimated height of frame's title bar
py = hf/2 - hi/2 - 15
# show the static bitmap
wx.StaticBitmap(self, wx.ID_ANY, bmp, pos=(px, py))
# optionally show some image information
info = "%s %dx%d" % (image_file, bmp.GetWidth(), bmp.GetHeight())
# the parent is the frame
parent.SetTitle(info)
app = wx.App(redirect=False) # stderr/stdout --> console
# create window/frame
frame = wx.Frame(None, wx.ID_ANY, size = (640, 480))
# create the panel instance
ImagePanel(frame)
# show the frame
frame.Show(True)
# start the GUI event loop
app.MainLoop()
Q: "Why doesn't the sun shine at night when we need all the light?" A: "Most books now say our sun is a star. But it still knows how to change back into a sun in the daytime."
You should learn how to hide your true colors a little bit better, sugar puddin'. First you use the document with sarcasm:
and later on try to convince us that you have respect for it:
Manipulator! All that you wanted to show it is some support for Mister Obama. But what you have achieved it is to show what kind of supporters he attracts.
Okay Dave, tone down and stop that name calling stuff!
My advice: "Remember that fear always lurks behind perfectionism. Confronting your fears and allowing yourself the right to be human can, paradoxically, make you a far happier and more productive person."
Palin in Wisconsin: "In a Palin McCain Administration ....." (come McCain my act dead, but he isn't)
McCain: "If I were President, I would fire the chairman of the SEC ....." Imaginary Lieberman whispering in the old man's ear: "Dear, the President does not have the authority to fire him."
I wish there was more I could say but the purity of your statement and the amount of mental distortion required to come up with that short piece of prose is staggering.
JW, you are either the god of all trolls or you have turned yourself into a klein bottle.
Let's face it JW comes from another world. Maybe he eats too many fermented tulip bulbs.
Well, the hobble about Palin has straightened a bit, and she looks more like ho-hum whatever.
“We the People of the United States, in Order to form a more perfect Union, establish Justice, insure domestic Tranquility, provide for the common defence, promote the general Welfare, and secure the Blessings of Liberty to ourselves and our Posterity, do ordain and establish this Constitution for the United States of America... Done... the seventeenth day of September, in the year of our LORD one thousand seven hundred and eighty seven.” —George Washington and the delegates
Today, 17 September, marks the 221st anniversary of the Constitution’s signing by our nation’s Founders.
Thank you so much Dave for pointing out the all important US constitution.
May I point out that Barack Obama taught constitutional law at the prestigious University of Chicago Law School from 1992 to 2004. I am sure he will not soil this important document in any way, unlike the present administration.
maybe. But remember that many of those illegals are using the voter registration cards of dead people (and their SSNs). One more reason leftists are opposed to throwing out illegals and closing down the border so they can't get in again.
Move over, Al Gore. You may lay claim to the Internet, but John McCain helped create the BlackBerry.
At least that's the contention of a top McCain policy adviser, Douglas Holtz-Eakin.
Spectacular feat! McCain himself has acknowledged that he doesn't know how to use a computer and can't send e-mail, one of the BlackBerry's prime functions.
ANCHORAGE, Alaska (AP) -- Gov. Sarah Palin may eventually have said ''no thanks'' to a federally funded Bridge to Nowhere. But a bridge to her hometown of Wasilla, that's a different story. A $600 million bridge and highway project to link Alaska's largest city to Palin's town of 7,000 residents is moving full speed ahead, despite concerns about wasting federal money.
>> I was going to put this in my geek thread but since it is really about dark matter, well - here is a geek rap about looking for dark matter. That made me cringe, but like a car crash, I couldn't stop watching it. .....
Being thrown out of your home, spouse kids and all, because of fraudulent banking practices shouldn't also steal your right to vote!
Having dead democrats vote is a minor problem. In most states illegal immigrants can easily vote, they have an address. Also, a huge amount of votes are thrown out because of minor flaws. Let's face it, voting in the US is on a working day, making it harder for a working person to vote.
To destroy widgets that belong together, put them on a frame:
# a look at Tkinter's frame widget
# a frame wraps the widgets put on it
from functools import partial # needs Python25 or higher
import random
import Tkinter as tk
def make_frame(parent, frame=None, color='white'):
global count
count += 1
parent.title("Frame %d" % count)
if frame:
# destroy any old frame and its widgets
frame.destroy()
# now create a new frame
frame = tk.Frame(top, bg=color)
frame.pack(expand="true")
# give the frame some widgets
b1 = tk.Button(frame, text=color+"_button1")
b2 = tk.Button(frame, text=color+"_button2")
b3 = tk.Button(frame, text=color+"_button3")
color = random.choice(['red', 'green', 'yellow', 'blue', 'cyan'])
# use partial callback to pass arguments
par_callback = partial(make_frame, parent, frame, color)
b4 = tk.Button(frame, text="Create new frame", command=par_callback)
# you can use pack() for the frame and grid() for its widgets
b1.grid(row=0, column=0, padx=15, pady=5)
b2.grid(row=1, column=1, padx=15, pady=5)
b3.grid(row=2, column=2, padx=15, pady=5)
b4.grid(row=3, column=3)
return frame
top = tk.Tk()
count = -1
# initial dummy
frame1 = make_frame(top)
frame2 = make_frame(top, frame1)
top.mainloop()
Tkinter's 'command=' accepts a function reference not a function call, so you have to use a callback arrangement to pass arguments:
# Tkinter example showing several ways for command to pass an argument
import Tkinter as tk
# use a closure
def closure_callback(val):
def closure():
root.title(val)
return closure
def change_title(val):
root.title(val)
# note in this case callback is onButton3
def curry_callback(callback, *args, **kwargs):
"""adds arguments to callback functions"""
def do_call():
return callback(*args, **kwargs)
return do_call
def onButton3(val):
root.title(val)
root = tk.Tk()
s1 = "passing a string to the title using a closure_callback"
button1 = tk.Button(root, text=s1, command=closure_callback(s1))
button1.pack(padx=100, pady=10)
s2 = "passing a string to the title using a lambda_callback"
lambda_callback = lambda: change_title(s2)
button2 = tk.Button(root, text=s2, command=lambda_callback)
button2.pack(padx=100, pady=10)
s3 = "passing a string to the title using a curry_callback"
button3 = tk.Button(root, text=s3, command=curry_callback(onButton3, s3))
button3.pack(padx=100, pady=10)
root.mainloop()
Also note that Python25 has a class 'partial' that works much like 'curry'.
