Button Label change on EVT_BUTTON in wxpython!!!

[plomon]

Some system info before proceeding further:

Platform: Mac OS X 10.7.1
Python Version: ActiveState Python 2.7.1
wxPython Version: wxPython2.9-osx-cocoa-py2.7

I want the button label to be changed while performing a task

So, here is what I did/want:

self.run_button=wx.Button(self.panel,ID_RUN_BUTTON,label='Install')
self.Bind(wx.EVT_BUTTON, self.OnRun,id=ID_RUN_BUTTON)
 
def OnRun(self,evt):
    self.run_button.SetLabel('Installing..')
    #call a function that does the installation task
    installation_task()
    #After task completion, set the button label back to "Install"
    self.run_button.SetLabel('Install')

When I try doing this, it doesn't set the label to "Installing" while the task is being performed. Any suggestions how do I achieve this?

[dwblas]

I don't use wx that much, but wx.Yeild() is the equivalent of Tkinter's update_idletasks. There were some additional problems with the button's definition but that may just be my lack of knowledge on the subject.

import wx
import time
 
class TestWx():
    def __init__(self):
        app=wx.App(False)
        frame=wx.Frame(None, wx.ID_ANY, "TestWx")
        self.panel=wx.Panel(frame)
        self.run_button=wx.Button(self.panel, 1 ,label='Install')
        self.run_button.Bind(wx.EVT_BUTTON, self.OnRun)
 
        frame.Show(True)
        app.MainLoop()
 
    def OnRun(self,evt):
        self.run_button.SetLabel('Installing..')
        wx.Yield()
        time.sleep(2.0)
        #call a function that does the installation task
#        installation_task()
        #After task completion, set the button label back to "Install"
        self.run_button.SetLabel('Install')
        wx.Yield()
 
Tw=TestWx()