CODEWITHSUNDEEP
pythonwxpython
J Jones
J Jones

Reputation: 3200

wxPython SetFocus() not working

I'm trying to use SetFocus() on a window in wxPython. I'm not sure exactly what it should look like on Mac, but as far as I can tell there are no visual changes at all when I call window.SetFocus(), and window.HasFocus() returns False. Here's some simplified example code:

app = wx.App()

frame = wx.Frame(None, -1, '')
box = wx.StaticBox(frame, -1, "")
sizer = wx.StaticBoxSizer(box, orient=wx.HORIZONTAL)
text = wx.StaticText(frame, label="Some Text")
sizer.Add(text, wx.ALIGN_LEFT|wx.ALL, border=10)
main_sizer = wx.BoxSizer(wx.VERTICAL)
main_sizer.Add(sizer)
frame.SetSizer(main_sizer)

frame.Centre()
frame.Show()
text.SetFocus()
print 'text.HasFocus?', text.HasFocus()

app.MainLoop()

This problem is present with wxPython versions '2.9.2.4' and '3.0.2.0'. Any ideas?

edit:

It looks like a StaticText widget cannot accept focus (window.AcceptFocus()) returns False). In that case, is there a simple, accepted way of highlighting a window like this? Or, is it possible to change whether or not a window can accept focus?

Upvotes: 0

Views: 2759

Answers (3)

Rolf of Saxony
Rolf of Saxony

Reputation: 22458

Answer to the second question posed in your comment.
I'm not sure what you are referring to when you say that setting the background colour creates a very thin highlight.
You can draw attention to buttons which are relevant or not at any given moment by enabling or disabling them. You can also change their colour depending on whether they are enabled, disabled or on a whim really.

For example:

        self.button.Disable()
        self.button.SetBackgroundColour(wx.NullColour)

        self.button.Enable()
        self.button.SetBackgroundColour('gold')

Setting the background colour should change the colour of the entire button.
You could also change the foreground colour which would change the colour of the text on any given button.

Upvotes: 0

Mike Driscoll
Mike Driscoll

Reputation: 33111

The wx.StaticText widget does not accept focus. If you are just trying to bring your window to the front, you can probably use the frame's Raise method. Most other widgets do allow you to set the focus on them so you can edit them.

If you want to highlight some text in a wx.StaticText widget, you might try changing its background color. This should work in most cases.

Upvotes: 0

Rolf of Saxony
Rolf of Saxony

Reputation: 22458

As it is static text arguably there is nothing to receive focus as you cannot click into it.
Try your code amended slightly to see how to set focus and use event.focus to see changes in focus. 

import wx
def onFocus(event):
    print "widget received focus!"

def onKillFocus(event):
    print "widget lost focus!"

app = wx.App()

frame = wx.Frame(None, -1, '')
box = wx.StaticBox(frame, -1, "")
sizer = wx.StaticBoxSizer(box, orient=wx.VERTICAL)
text0 = wx.StaticText(frame,label="1st Item")
text0_input = wx.TextCtrl(frame, wx.ID_ANY, size=(345,25))
text = wx.StaticText(frame, label="Some Text")
text_input = wx.TextCtrl(frame, wx.ID_ANY, size=(345,25))
sizer.Add(text0, wx.ALIGN_LEFT|wx.ALL, border=10)
sizer.Add(text0_input, wx.ALIGN_LEFT|wx.ALL, border=10)
sizer.Add(text, wx.ALIGN_LEFT|wx.ALL, border=10)
sizer.Add(text_input, wx.ALIGN_LEFT|wx.ALL, border=10)
text0_input.Bind(wx.EVT_SET_FOCUS, onFocus)
text0_input.Bind(wx.EVT_KILL_FOCUS, onKillFocus)

main_sizer = wx.BoxSizer(wx.VERTICAL)
main_sizer.Add(sizer)
frame.SetSizer(main_sizer)

frame.Centre()
frame.Show()
text_input.SetFocus()
#print 'text_input.HasFocus?', text_input.HasFocus()

app.MainLoop()

Upvotes: 1

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