I set up a GUI with guide, but the input variables are not getting set.

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Jeanette 2011-6-22

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Somehow the callback function that needs to set the input of the GUI to a variable is not setting it. How do I make the GUI set the variable?

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Answer 1

Matt Fig 2011-6-22

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https://ww2.mathworks.cn/matlabcentral/answers/10057-i-set-up-a-gui-with-guide-but-the-input-variables-are-not-getting-set#answer_13853

Do you mean you want to pass parameters to set the initial of, say, an editbox or two? If so, you can access anything passed in through the

guiname_OpeningFcn

variable varargin.

If not, please explain exactly what you want to do.

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Jeanette 2011-7-8

Yes. I am trying to set variables that the user selects from drop down menus. The code is generated in GUIDE (looks like C++). Here it is:

function varargout = SensorInputGui(varargin)

% SENSORINPUTGUI M-file for SensorInputGui.fig

% SENSORINPUTGUI, by itself, creates a new SENSORINPUTGUI or raises the existing

% singleton*.

%

% H = SENSORINPUTGUI returns the handle to a new SENSORINPUTGUI or the handle to

% the existing singleton*.

%

% SENSORINPUTGUI('CALLBACK',hObject,eventData,handles,...) calls the local

% function named CALLBACK in SENSORINPUTGUI.M with the given input arguments.

%

% SENSORINPUTGUI('Property','Value',...) creates a new SENSORINPUTGUI or raises the

% existing singleton*. Starting from the left, property value pairs are

% applied to the GUI before SensorInputGui_OpeningFcn gets called. An

% unrecognized property name or invalid value makes property application

% stop. All inputs are passed to SensorInputGui_OpeningFcn via varargin.

%

% *See GUI Options on GUIDE's Tools menu. Choose "GUI allows only one

% instance to run (singleton)".

%

% See also: GUIDE, GUIDATA, GUIHANDLES

% Edit the above text to modify the response to help SensorInputGui

% Last Modified by GUIDE v2.5 30-Jun-2011 14:53:08

% Begin initialization code - DO NOT EDIT

gui_Singleton = 1;

gui_State = struct('gui_Name', mfilename, ...

'gui_Singleton', gui_Singleton, ...

'gui_OpeningFcn', @SensorInputGui_OpeningFcn, ...

'gui_OutputFcn', @SensorInputGui_OutputFcn, ...

'gui_LayoutFcn', [] , ...

'gui_Callback', []);

if nargin && ischar(varargin{1})

gui_State.gui_Callback = str2func(varargin{1});

end

if nargout

[varargout{1:nargout}] = gui_mainfcn(gui_State, varargin{:});

else

gui_mainfcn(gui_State, varargin{:});

end

% End initialization code - DO NOT EDIT

% --- Executes just before SensorInputGui is made visible.

function SensorInputGui_OpeningFcn(hObject, eventdata, handles, varargin)

% This function has no output args, see OutputFcn.

% hObject handle to figure

% eventdata reserved - to be defined in a future version of MATLAB

% handles structure with handles and user data (see GUIDATA)

% varargin command line arguments to SensorInputGui (see VARARGIN)

% Choose default command line output for SensorInputGui

handles.output = hObject;

% Update handles structure

guidata(hObject, handles);

% UIWAIT makes SensorInputGui wait for user response (see UIRESUME)

uiwait(handles.figure1);

% --- Outputs from this function are returned to the command line.

function varargout = SensorInputGui_OutputFcn(hObject, eventdata, handles)

% varargout cell array for returning output args (see VARARGOUT);

% hObject handle to figure

% eventdata reserved - to be defined in a future version of MATLAB

% handles structure with handles and user data (see GUIDATA)

% Get default command line output from handles structure

varargout{1} = handles.output;

% --- Executes on selection change in popupmenu4.

function popupmenu4_Callback(hObject, eventdata, handles)

% hObject handle to popupmenu4 (see GCBO)

% eventdata reserved - to be defined in a future version of MATLAB

% handles structure with handles and user data (see GUIDATA)

% Hints: contents = get(hObject,'String') returns popupmenu4 contents as cell array

% contents{get(hObject,'Value')} returns selected item from popupmenu4

% --- Executes during object creation, after setting all properties.

function popupmenu4_CreateFcn(hObject, eventdata, handles)

% hObject handle to popupmenu4 (see GCBO)

% eventdata reserved - to be defined in a future version of MATLAB

% handles empty - handles not created until after all CreateFcns called

% Hint: popupmenu controls usually have a white background on Windows.

% See ISPC and COMPUTER.

if ispc && isequal(get(hObject,'BackgroundColor'), get(0,'defaultUicontrolBackgroundColor'))

set(hObject,'BackgroundColor','white');

end

% --- Executes on selection change in popupmenu3.

function popupmenu3_Callback(hObject, eventdata, handles)

% hObject handle to popupmenu3 (see GCBO)

% eventdata reserved - to be defined in a future version of MATLAB

% handles structure with handles and user data (see GUIDATA)

% Hints: contents = get(hObject,'String') returns popupmenu3 contents as cell array

% contents{get(hObject,'Value')} returns selected item from popupmenu3

% --- Executes during object creation, after setting all properties.

function popupmenu3_CreateFcn(hObject, eventdata, handles)

% hObject handle to popupmenu3 (see GCBO)

% eventdata reserved - to be defined in a future version of MATLAB

% handles empty - handles not created until after all CreateFcns called

% Hint: popupmenu controls usually have a white background on Windows.

% See ISPC and COMPUTER.

if ispc && isequal(get(hObject,'BackgroundColor'), get(0,'defaultUicontrolBackgroundColor'))

set(hObject,'BackgroundColor','white');

end

% --- Executes on selection change in popupmenu1.

function popupmenu1_Callback(hObject, eventdata, handles)

% hObject handle to popupmenu1 (see GCBO)

% eventdata reserved - to be defined in a future version of MATLAB

% handles structure with handles and user data (see GUIDATA)

% Hints: contents = get(hObject,'String') returns popupmenu1 contents as cell array

% contents{get(hObject,'Value')} returns selected item from popupmenu1

% --- Executes during object creation, after setting all properties.

function popupmenu1_CreateFcn(hObject, eventdata, handles)

% hObject handle to popupmenu1 (see GCBO)

% eventdata reserved - to be defined in a future version of MATLAB

% handles empty - handles not created until after all CreateFcns called

% Hint: popupmenu controls usually have a white background on Windows.

% See ISPC and COMPUTER.

if ispc && isequal(get(hObject,'BackgroundColor'), get(0,'defaultUicontrolBackgroundColor'))

set(hObject,'BackgroundColor','white');

end

% --- Executes during object creation, after setting all properties.

function figure1_CreateFcn(hObject, eventdata, handles)

% hObject handle to figure1 (see GCBO)

% eventdata reserved - to be defined in a future version of MATLAB

% handles empty - handles not created until after all CreateFcns called

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I set up a GUI with guide, but the input variables are not getting set.

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I set up a GUI with guide, but the input variables are not getting set.

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