uicontrol syntax in callback function

In Matlab R2017b, the call syntax

c = uicontrol(parent);

executes as documented when used in a script, but fails when used in a @callback function in which the desired parent object

is passed as an argument, reporting the error "Not enough input arguments".

Has anyone seen this before?

Thanks

[Dhananjay Kumar]

Can you post the calbback function's signature and how you are using it, I mean an example snippet of code?

Also see if this is relevant: https://in.mathworks.com/matlabcentral/answers/408266-why-do-i-get-this-error?s_tid=answers_rc1-3_p3_Topic

[Walter Roberson]

Is this GUIDE or App Designer?

How are you calculating the parent object ?