MATLAB: I have made a gui which opens another gui & after inserting values in the edit text of 2nd gui when i press the push button to run a program it shows errors like’

guiguide

?? Attempt to reference field of non-structure array.

Error in ==> gui3>pushbutton1_Callback at 81 Q=str2double(get(handles.edit1,'string'))

Error in ==> gui_mainfcn at 96 feval(varargin{:});

Error in ==> gui3 at 42 gui_mainfcn(gui_State, varargin{:});

Error in ==> @(hObject,eventdata)gui3('pushbutton1_Callback',hObject,eventdata,guidata(hObject))

??? Error while evaluating uicontrol Callback

Best Answer

If you attempt to open a second GUI by using openfig(), then the initialization code associated with the second GUI is not run, so it will not have a proper "handles" structure. To open a second GUI you should start its .m file.

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MATLAB: Attempt to reference field of non-structure array.

First of all, you don't need anything in the callback for the radio buttons or uipanel unless you want to do something, like change a static text label or load a popup list or something like that. You don't need it to just set a and b like you did, since you can get those in the pushbutton callback just by calling get(). So clear out your uipanel1_SelectionChangeFcn() callback and then have just this as the pushbutton callback:

function pushbutton1_Callback(hObject, eventdata, handles)
  a = get(handles.radiobutton1,'value');
  b = get(handles.radiobutton2,'value');
  if a == 1
    uiwait(msgbox ('first button'));
  end
  if b == 1
    uiwait(msgbox('second button'));
  end
end

MATLAB: GUI inside another GUI

Hi,

When you call your second gui (GUI_Retrait), do you first close the main gui ?

If so, the error message is normal.

For what I understand, when you create the main GUI, you stock the handle in the appdata of the root (setappdata(0,'GUI3',yourHandle)). So the handle is stored. But if you close the main figure, the value of the handle is still stored, but the GUI doesn't exist anymore, so you can't use the value as a handle.

to be clear, test this :

f = figure;
ishandle(f) % the answer is 1
close(f); % destroy the object
ishandle(f) % the answer is 0

f still exist but is not a handle anymore.

Is this the problem you have ?

Best Answer

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MATLAB: Attempt to reference field of non-structure array.

MATLAB: GUI inside another GUI

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