pythoncard-users

[Pythoncard-users] Make button inactive

[ronny de w. <ron...@gm...>]

Hello,

I have a Test button which should perform an action, like sleeping
5 secs in the example below. During this action the button should not accept 
any event. So one should not be able to click the button again before the action
related to the button is finished. During the action any Test button
clicks should
be ignored.

How can i do that?
Why doe the code below does not show this behavious ?

    def on_Test_mouseClick(self, event):
        print "*** button clicked"
        # why can i not disable the button with:
        self.components.Test.enabled = False
        time.sleep(5)
        self.components.Test.enabled = True

Ronny De Winter

Re: [Pythoncard-users] Make button inactive

[Liam C. <cy...@gm...>]

def on_Test_mouseClick(self, event):
       print "*** button clicked"
       # why can i not disable the button with:
       self.components.Test.enabled = False

       time.sleep(5)
       self.components.Test.enabled = True

Because, you're not repainting in there - alternately, you could use
wx.timer instead.
(This is straight copy and paste from the Pythoncard manual.)

from wxPython import wx

def on_Test_mouseClick(self, event):
      self.myTimer = wx.wxTimer(self.components.Test, -1) # create a timer
      self.components.Test.enabled = False
      self.myTimer.Start(5000) # launch timer, to fire every 5000ms (5 seconds)

def on_Test_timer(self, event):
      self.myTimer.Stop()
      self.components.Test.enabled = True


That's guaranteed to do it for you but it's a bit of a hackish brute
way of doing it. You have to force a repaint, iirc, and how do that is
buried deep within wxPython.





On Sun, 27 Feb 2005 00:00:31 +0100, ronny de winter
<ron...@gm...> wrote:
> Hello,
> 
> I have a Test button which should perform an action, like sleeping
> 5 secs in the example below. During this action the button should not accept
> any event. So one should not be able to click the button again before the action
> related to the button is finished. During the action any Test button
> clicks should
> be ignored.
> 
> How can i do that?
> Why doe the code below does not show this behavious ?
> 
>     def on_Test_mouseClick(self, event):
>         print "*** button clicked"
>         # why can i not disable the button with:
>         self.components.Test.enabled = False
>         time.sleep(5)
>         self.components.Test.enabled = True
> 
> Ronny De Winter
> 
> -------------------------------------------------------
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And with it comes the only basic human duty, to take the consequences.

Re: [Pythoncard-users] Make button inactive

[Ronny De W. <ron...@gm...>]

Liam Clarke wrote:

>def on_Test_mouseClick(self, event):
>       print "*** button clicked"
>       # why can i not disable the button with:
>       self.components.Test.enabled = False
>
>       time.sleep(5)
>       self.components.Test.enabled = True
>
>Because, you're not repainting in there - alternately, you could use
>wx.timer instead.
>(This is straight copy and paste from the Pythoncard manual.)
>
>You have to force a repaint, iirc, and how do that is
>buried deep within wxPython.
>
>  
>
I tried with 

self.components.Test.Update()

after disabling the button, without success.

wx.timer is no alternative for me, in fact i don't sleep(5) but do some 
processing for about 5 secs (didnt post the whole processing since it
is not relevant to the problem).

Forcing the repaint is the message, but how ?
How to best explore the deeply buried functionality of wxPython/wxWidgets ?
Do you use specific tools for that ? published API documentation
on the internet ? dynamic exploration via debuggers, ... ?

A couple of days ago i posted a similar question about autosizing the
columns of a multicolumnlist. Also there the answer is probably buried 
in wxPython/wxWidgets. 

What is the fastest way to find the answer to these kind of problems ?

Best regards,
Ronny De Winter

Re: [Pythoncard-users] Make button inactive

[Kevin A. <al...@se...>]

On Feb 27, 2005, at 5:22 AM, Ronny De Winter wrote:

> Liam Clarke wrote:
>
>> def on_Test_mouseClick(self, event):
>>       print "*** button clicked"
>>       # why can i not disable the button with:
>>       self.components.Test.enabled = False
>>
>>       time.sleep(5)
>>       self.components.Test.enabled = True
>>
>> Because, you're not repainting in there - alternately, you could use
>> wx.timer instead.
>> (This is straight copy and paste from the Pythoncard manual.)
>>
>> You have to force a repaint, iirc, and how do that is
>> buried deep within wxPython.
>>
>>
> I tried with
> self.components.Test.Update()
>
> after disabling the button, without success.

Try Test.redraw(), the redraw method was made specifically for this 
purpose. The method is defined in widget.py

     def redraw(self):
         """Force an immediate redraw without waiting for an event 
handler to finish."""
         self.Refresh()
         self.Update()


>
> wx.timer is no alternative for me, in fact i don't sleep(5) but do 
> some processing for about 5 secs (didnt post the whole processing 
> since it
> is not relevant to the problem).

Actually, I think using a timer is the right way to reenable the 
button. You may also need to consider calling SafeYield() depending on 
how responsive you want the UI to be during your processing. There are 
many samples that do long processing, so take a look at them for more 
examples.

> Forcing the repaint is the message, but how ?
> How to best explore the deeply buried functionality of 
> wxPython/wxWidgets ?
> Do you use specific tools for that ? published API documentation
> on the internet ? dynamic exploration via debuggers, ... ?
>
> A couple of days ago i posted a similar question about autosizing the
> columns of a multicolumnlist. Also there the answer is probably buried 
> in wxPython/wxWidgets.
> What is the fastest way to find the answer to these kind of problems ?
>
> Best regards,
> Ronny De Winter
>

For wxPython questions, please post your quest on wxPython-users.

http://www.wxpython.org/maillist.php

ka

Re: [Pythoncard-users] Make button inactive

[Ronny De W. <ron...@gm...>]

Kevin,

Thanks, using redraw() and Yield() solved my problem:

    def on_Test_mouseClick(self, event):
        if self.loading:
            return
        self.loading = True
        print "*** button clicked"
        self.components.Test.enabled = False
        self.components.Test.redraw()
        time.sleep(5)
        wx.Yield()
        self.loading = False
        self.components.Test.enabled = True

Cheers/ rdw

Kevin Altis wrote:

> Try Test.redraw(), the redraw method was made specifically for this 
> purpose. The method is defined in widget.py
>
>     def redraw(self):
>         """Force an immediate redraw without waiting for an event 
> handler to finish."""
>         self.Refresh()
>         self.Update()
>
> Actually, I think using a timer is the right way to reenable the 
> button. You may also need to consider calling SafeYield() depending on 
> how responsive you want the UI to be during your processing. There are 
> many samples that do long processing, so take a look at them for more 
> examples.