On Sep 14, 11:57 pm, Terry Carroll <[EMAIL PROTECTED]> wrote:
> I'm trying to use wx.ProgressBar, and the cancel button is not
> responding.
>
> Here is a simple program that exhibits the problem:
>
> #########################################################
> import wx
> import time
>
> max = 10
> app = wx.PySimpleApp()
> dlg = wx.ProgressDialog("Progress dialog example",
> "variables to be shown here",
> maximum = max,
> style = wx.PD_CAN_ABORT
> | wx.PD_CAN_SKIP
> #| wx.PD_APP_MODAL
> | wx.PD_ELAPSED_TIME
> | wx.PD_ESTIMATED_TIME
> | wx.PD_REMAINING_TIME
> )
>
> keepGoing = True
> skip = False
> count = 0
>
> while keepGoing and count < max:
> count += 1
> wx.MilliSleep(1000)
> #time.sleep(1)
> newtext = "(before) count: %s, keepGoing: %s, skip: %s " % \
> (count, keepGoing, skip)
> print newtext
> (keepGoing, skip) = dlg.Update(count, newtext)
> newtext = "(after) count: %s, keepGoing: %s, skip: %s " % \
> (count, keepGoing, skip)
> print newtext
> dlg.Destroy()
> #########################################################
>
> The dialog looks right when this runs, but....
>
> What's right: I get a progress bar; it includes "Skip" and "Cancel"
> buttons; it shows 10 seconds of progress, and updates once per second
> with the variables' values on each iteration.
>
> What's wrong is that I can't get clicking on the "Skip" or "Cancel"
> buttons to have any effect. Instead, as soon as the dialog displays,
> I get an hourglass, and it doesn't matter what I click on. Here's
> what the print statements display, consistently, regardless of what I
> try to click or whether I click nothing at all:
>
> I:\python>test1.py
> (before) count: 1, keepGoing: True, skip: False
> (after) count: 1, keepGoing: True, skip: False
> (before) count: 2, keepGoing: True, skip: False
> (after) count: 2, keepGoing: True, skip: True
> (before) count: 3, keepGoing: True, skip: True
> (after) count: 3, keepGoing: True, skip: True
> (before) count: 4, keepGoing: True, skip: True
> (after) count: 4, keepGoing: True, skip: True
> (before) count: 5, keepGoing: True, skip: True
> (after) count: 5, keepGoing: True, skip: True
> (before) count: 6, keepGoing: True, skip: True
> (after) count: 6, keepGoing: True, skip: True
> (before) count: 7, keepGoing: True, skip: True
> (after) count: 7, keepGoing: True, skip: True
> (before) count: 8, keepGoing: True, skip: True
> (after) count: 8, keepGoing: True, skip: True
> (before) count: 9, keepGoing: True, skip: True
> (after) count: 9, keepGoing: True, skip: True
> (before) count: 10, keepGoing: True, skip: True
> (after) count: 10, keepGoing: True, skip: True
>
> Two oddities here:
>
> 1) As I read the docs, the keepGoing variable should be set to True,
> unless I click on "Cancel," in which case it should be set to False
> (which would end the loop). That doesn't happen. This is really what
> I'm most concerned here with.
>
> 2) The variable "skip: set to False on the first iteration, and then
> set to True on subsequent iterations? Note that this happens even if
> no buttons are selected. This is just a weirdness to me, and not my
> main concern, but I thought I'd mention it in case it's relevant.
>
> You can see some variations in the commented-out code that I tried;
> they did not help.
>
> Relevant software and releases:
>
> OS: Windows XP Home Edition, Version 2002, SP2
> Python: ActivePython 2.5.0.0
> wxPython: 2.8.1.1 (msw-unicode)
>
> Any help appreciated.
Supposedly a progress dialog does not work well on its own because
events get screwed up when there isn't a main loop. Try this:
import wx
app = wx.PySimpleApp()
win = wx.Frame(None, -1, "Test Progress Dialog")
button = wx.Button(win, -1, "start download")
def on_button_click(evt):
max = 10
dialog = wx.ProgressDialog(
"Loading",
"progress:",
max,
style = wx.PD_CAN_ABORT
|wx.PD_ELAPSED_TIME
|wx.PD_ESTIMATED_TIME
|wx.PD_REMAINING_TIME
)
keep_going = True
skip = False
count = 0
while keep_going and (count < max):
count += 1
wx.MilliSleep(1000)
(keep_going, skip) = dialog.Update(count)
print skip
dialog.Destroy()
button.Bind(wx.EVT_BUTTON, on_button_click)
win.Show()
app.MainLoop()
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