MATLAB: How to resolve empty inputdlg box issue

guiguideimage analysisimage processingmatlab gui

Hello everyone!
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.
Thanks in advance!

Best Answer

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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