cocoa - Using "Tab" key to move from NSTextField to NSMatrix -

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i have cocoa form (xib) contains nstextfields , nsmatrix of nsbuttoncells. can use "tab" key tab though nstextfields, nsmatrix gets skipped over.

i want able tab nsmatrix, , tab 1 button next within matrix.

i have put in following line of code, having no effect:

[mtxmymatrix settabkeytraversescells:yes];

can problem or point me example? have searched hours no success.

i had similar problem , solution found fiddling "first responder" setting. specifically, making sure entire form didn't refuse, , each individual field likewise accepted first responder status. again, whole form, , each field well. searched while... :( i'm noob.


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