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Editorial Team
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Asked: 2026-05-23T09:11:44+00:00

I’m having a problem finding out which NSTextfield is focused. I am building a

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I’m having a problem finding out which NSTextfield is focused.

I am building a multi-language form and have several NSTextfields for data entry. I have to change the text input source for some of the NSTextfields during data entry, and I need it to happen automatically.

For now, I can change the text input source as I mentioned here without problem.

The problem that I have is to change the input source right when the NSTextfield becomes focused. If I use the controlTextDidBeginEditing: delegate method it changes the source input after typing the first letter.
This means that I lose the first word I typed in proper language.

Is there any delegate to find it ?

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1 Answer

  1. Editorial Team

    You can subclass your NSTextField and override - (BOOL)becomeFirstResponder (NSResponder) to respond to this kind of event.

    You can also try control:textShouldBeginEditing: instead.

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