Calling userdefined value from GUI .m file into function .m file

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adi kul 2016-8-3

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https://ww2.mathworks.cn/matlabcentral/answers/298257-calling-userdefined-value-from-gui-m-file-into-function-m-file

评论： Geoff Hayes 2016-8-3

Hello all, I need help in calling user defined value from GUI .m file to function .m file. I have GUI .m file which call different functions to compute the loads by clicking a push button.

Now I am looking for a way to get a user defined value which will be used in one of the function .m files to give the solution.

I tried with handles and had no luck. This is what I tried: In GUI .m file I have a drop down to collect the user defined input. This is the code:

          M2.material2=3;
          prompt = {'Youngs Modulus (MPa or N/mm2)','Poissions ratio'};
          dlg_title = 'Material Properties';
          num_lines = 1;
          defaultans = {'',''};
          answer = inputdlg(prompt,dlg_title,num_lines,defaultans);
          assignin('base','YoungsMod2',str2double(answer{1}));
          assignin('base','PoissionsRat2',str2double(answer{2}));
          M2.YoungsMod2=str2double(answer{1});
          M2.PoissionsRat2=str2double(answer{2});

And I have this code after the above; end

set(handles.surf_material2, 'UserData', M2);

Now in the function .m file where I have defined the calculation for the above input, I have added this:

M2= get(handles.surf_material2, 'UserData');

But when I execute the code I am getting this error:

Error while evaluating uicontrol Callback
Undefined variable "handles" or class "handles.surf1_material".

Error on line:

M2= get(handles.surf1_material, 'UserData');

Can anyone guide me to solve this issue?

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adi kul 2016-8-3

编辑：adi kul 2016-8-3

M1 and M2 are taken from GUI by a drop down menu and used in function which is again called by GUI. So I am not sure how I use the above code for the same?

Geoff Hayes 2016-8-3

adi - how are you currently calling this function? Please copy and paste all relevant code so that we can see how it is being called. If it is being called from a GUI callback, then please copy and paste all code within this callback.

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