wx.EVT_SET_FOCUS Fires 2wice

wxPython Users
1

oops!!! i forgot the app sample code. Here it is. The Problem and help request is copied at the bottom.

#!/usr/bin/env python

-- coding: iso-8859-15 --

generated by wxGlade 0.6.2 on Thu May 14 10:47:44 2009

import wx

begin wxGlade: extracode

end wxGlade

class MyFrame(wx.Frame):
def init(self, *args, **kwds):
# begin wxGlade: MyFrame.init
kwds[“style”] = wx.DEFAULT_FRAME_STYLE
wx.Frame.init(self, *args, **kwds)
self.panel_1 = wx.Panel(self, -1)
self.text_ctrl_1 = wx.TextCtrl(self.panel_1, -1, “”)
self.combo_box_1 = wx.ComboBox(self.panel_1, -1, choices=[], style=wx.CB_DROPDOWN)

    self.__set_properties()
    self.__do_layout()
    # end wxGlade
    self.combo_box_1.Bind(wx.EVT_SET_FOCUS, self.CombosSetFocus)
def __set_properties(self):
    # begin wxGlade: MyFrame.__set_properties
    self.SetTitle("frame_1")
    # end wxGlade

def __do_layout(self):
    # begin wxGlade: MyFrame.__do_layout
    sizer_1 = wx.BoxSizer(wx.VERTICAL)
    sizer_2 = wx.BoxSizer(wx.VERTICAL)
    sizer_2.Add(self.text_ctrl_1, 0, 0, 0)
    sizer_2.Add(self.combo_box_1, 0, 0, 0)
    self.panel_1.SetSizer(sizer_2)
    sizer_1.Add(self.panel_1, 1, wx.EXPAND, 0)
    self.SetSizer(sizer_1)
    sizer_1.Fit(self)
    self.Layout()
    # end wxGlade
   
def CombosSetFocus(self, evt):
  print "CombosSetFocus Fired"
  evt.Skip()

end of class MyFrame

if name == “main”:
app = wx.PySimpleApp(0)
wx.InitAllImageHandlers()
frame_1 = MyFrame(None, -1, “”)
app.SetTopWindow(frame_1)
frame_1.Show()
app.MainLoop()

Help please,
I put a txtCtrl and Combobox on a panel and tab from
the textCtrl to the combobox. I bound the wx.EVT_SET_FOCUS event to a
handler that just prints a line saying it fired, and then evt.Skip().
But it runs 2 times. This causes trouble in a larger program where i
want it to run only once. There the double run causes the combobox kill
focus evt to run and then the set focus runs its second time.
If i don’t use evt.Skip() then the combobox never gets the cursor in its textbox part.

In the larger program when 1 combobox gets enter pressed it sends
focus to the next combobox. The double focusing causes trouble because
some code and functions are running twice.

How to have a wx.EVT_SET_FOCUS for a combobox only run 1 time, even
with Evt.Skip(). Also any reason for this double running behaviour so i
might understand it better?

Many thanks, my head and desk already have dents from banging into each other. Markandeya

2

Did you notice it only sends the event twice if you click on the combobox's
dropdown? If you just click in the text area, it sends it once. I guess there
in some sense two "states" of the combobox, regular and displaying drop-
down, so that is why it sends two focus events when doing that?

I haven't seen you larger code, but is it possible that it is not a good idea
to link other functions to merely giving focus to the comboBox? What are
you trying to do?

Che

···

On Thu, May 14, 2009 at 1:52 AM, Markandeya <mrc55519@gmail.com> wrote:

oops!!! i forgot the app sample code. Here it is. The Problem and help
request is copied at the bottom.

#!/usr/bin/env python
# -*- coding: iso-8859-15 -*-
# generated by wxGlade 0.6.2 on Thu May 14 10:47:44 2009

import wx

# begin wxGlade: extracode
# end wxGlade

class MyFrame(wx.Frame):
def __init__(self, *args, **kwds):
# begin wxGlade: MyFrame.__init__
kwds["style"] = wx.DEFAULT_FRAME_STYLE
wx.Frame.__init__(self, *args, **kwds)
self.panel_1 = wx.Panel(self, -1)
self.text_ctrl_1 = wx.TextCtrl(self.panel_1, -1, "")
self.combo_box_1 = wx.ComboBox(self.panel_1, -1, choices=,
style=wx.CB_DROPDOWN)

    self\.\_\_set\_properties\(\)
    self\.\_\_do\_layout\(\)
    \# end wxGlade
    self\.combo\_box\_1\.Bind\(wx\.EVT\_SET\_FOCUS, self\.CombosSetFocus\)
def \_\_set\_properties\(self\):
    \# begin wxGlade: MyFrame\.\_\_set\_properties
    self\.SetTitle\(&quot;frame\_1&quot;\)
    \# end wxGlade

def \_\_do\_layout\(self\):
    \# begin wxGlade: MyFrame\.\_\_do\_layout
    sizer\_1 = wx\.BoxSizer\(wx\.VERTICAL\)
    sizer\_2 = wx\.BoxSizer\(wx\.VERTICAL\)
    sizer\_2\.Add\(self\.text\_ctrl\_1, 0, 0, 0\)
    sizer\_2\.Add\(self\.combo\_box\_1, 0, 0, 0\)
    self\.panel\_1\.SetSizer\(sizer\_2\)
    sizer\_1\.Add\(self\.panel\_1, 1, wx\.EXPAND, 0\)
    self\.SetSizer\(sizer\_1\)
    sizer\_1\.Fit\(self\)
    self\.Layout\(\)
    \# end wxGlade

def CombosSetFocus\(self, evt\):
  print &quot;CombosSetFocus Fired&quot;
  evt\.Skip\(\)

# end of class MyFrame

if __name__ == "__main__":
app = wx.PySimpleApp(0)
wx.InitAllImageHandlers()
frame_1 = MyFrame(None, -1, "")
app.SetTopWindow(frame_1)
frame_1.Show()
app.MainLoop()

Help please,
I put a txtCtrl and Combobox on a panel and tab from the textCtrl to the
combobox. I bound the wx.EVT_SET_FOCUS event to a handler that just prints a
line saying it fired, and then evt.Skip(). But it runs 2 times. This causes
trouble in a larger program where i want it to run only once. There the
double run causes the combobox kill focus evt to run and then the set focus
runs its second time.
If i don't use evt.Skip() then the combobox never gets the cursor in its
textbox part.
In the larger program when 1 combobox gets enter pressed it sends focus
to the next combobox. The double focusing causes trouble because some code
and functions are running twice.

How to have a wx.EVT_SET_FOCUS for a combobox only run 1 time, even with
Evt.Skip(). Also any reason for this double running behaviour so i might
understand it better?

Many thanks, my head and desk already have dents from banging into each
other. Markandeya