Question
I have a inputdlg box. I want the inputdlg box to cancel the processing if the user pressed OK without giving any input in the inputdlg box. How can I do that? I know how to cancel the processing if Cancel or the close button is pressed.
Expert Answer
Neeta Dsouza
PhD Expert
Answered Aug 12, 2026
Try this:
a = inputdlg('Type a number:')
if isempty(a{:})
disp('a is empty') % Information Only To Demonstrate That The Test Works
return
end
fprintf('a = %f\n', str2double(a))
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