Re: [Tkinter-discuss] Focus issue
Hi, On Wed, 10 Jan 2024 16:33:46 -0400 Cam Farnell wrote: > To answer my own question: the focus was being given to another widget > after the code in question had executed. > > That said, I still don't understand why focus_set followed by > update_idletasks followed by focus_get would return None, but tkinter > something works in strange and mysterious ways. > I can only guess here, have you tried calling update_idletasks() (or even update()) *before* calling focus_set() ? Best regards, Michael ___ Tkinter-discuss mailing list Tkinter-discuss@python.org https://mail.python.org/mailman/listinfo/tkinter-discuss
Re: [Tkinter-discuss] Focus issue
To answer my own question: the focus was being given to another widget after
the code in question had executed.
That said, I still don't understand why focus_set followed by update_idletasks
followed by focus_get would return None, but tkinter something works in strange
and mysterious ways.
Cheers
Cam
On 2024-01-10 08:44, Cam Farnell wrote:
In a rather large program I have this code:
self.TextWidget.focus_set()
print("type(self.TextWidget)=%s"%type(self.TextWidget))
print('Focus_get()=%s'%self.focus_get())
The goal is to have TextWidget get the focus. Usually it does, but there is one
particular circumstance when it does not get the focus. The "print" lines I
added for debugging.
The output from the print functions is:
type(self.TextWidget)=
Focus_get()=None
TextWidget is an instance of rpWidgets.ColorizedText which is created thus:
class ColorizedText(tkinter.Text):
which is to say, it's just a tkinter.Text to which I've added methods.
I've tried creating a minimum example without success.
My questions is: how is it possible for TextWidget to NOT have the focus
immediately after a call to focus_set?
Changing focus_set to focus_force makes no difference.
Invoking update_idletasks() after the focus_set makes no difference.
The TextWidget in question is visible on the screen, and pressing Tab a couple
of times does get it the focus.
Having spent some hours chasing this I'm a tad frustrated, but quite open to
suggestions about what to look for.
Cheers
Cam Farnell
___
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Tkinter-discuss@python.org
https://mail.python.org/mailman/listinfo/tkinter-discuss
___
Tkinter-discuss mailing list
Tkinter-discuss@python.org
https://mail.python.org/mailman/listinfo/tkinter-discuss
[Tkinter-discuss] Focus issue
In a rather large program I have this code:
self.TextWidget.focus_set()
print("type(self.TextWidget)=%s"%type(self.TextWidget))
print('Focus_get()=%s'%self.focus_get())
The goal is to have TextWidget get the focus. Usually it does, but there is one
particular circumstance when it does not get the focus. The "print" lines I
added for debugging.
The output from the print functions is:
type(self.TextWidget)=
Focus_get()=None
TextWidget is an instance of rpWidgets.ColorizedText which is created thus:
class ColorizedText(tkinter.Text):
which is to say, it's just a tkinter.Text to which I've added methods.
I've tried creating a minimum example without success.
My questions is: how is it possible for TextWidget to NOT have the focus
immediately after a call to focus_set?
Changing focus_set to focus_force makes no difference.
Invoking update_idletasks() after the focus_set makes no difference.
The TextWidget in question is visible on the screen, and pressing Tab a couple
of times does get it the focus.
Having spent some hours chasing this I'm a tad frustrated, but quite open to
suggestions about what to look for.
Cheers
Cam Farnell
___
Tkinter-discuss mailing list
Tkinter-discuss@python.org
https://mail.python.org/mailman/listinfo/tkinter-discuss
