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)=<class 'rpWidgets.ColorizedText'> 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
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