Set elements to hide\visible MATLAB Guide)

I have the following code in my GUI (guide) and I want to turn visible\hidden inputFld3 base on the radio button user selected .

I tried the following if block and set function but either I am doingit wrong or I am not placing it uder the correct sub-function of the GUI code.

• What is the correct code?
• Under which function the code to hide or unhide should be place?

Assistnace is much appriciated

if handles.baseHeightRbtn == 1

set(handles.inputFld3, 'Visible', 'off')

end

% My GUI code:

function varargout = testHideAndShowByRadioBtnV2(varargin)

% Begin initialization code - DO NOT EDIT

gui_Singleton = 1;

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

'gui_Singleton', gui_Singleton, ...

'gui_OpeningFcn', @testHideAndShowByRadioBtnV2_OpeningFcn, ...

'gui_OutputFcn', @testHideAndShowByRadioBtnV2_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 testHideAndShowByRadioBtnV2 is made visible.

function testHideAndShowByRadioBtnV2_OpeningFcn(hObject, eventdata, handles, varargin)

% This function has no output args, see OutputFcn.

% Choose default command line output for testHideAndShowByRadioBtnV2

handles.output = hObject;

% Update handles structure

guidata(hObject, handles);

% UIWAIT makes testHideAndShowByRadioBtnV2 wait for user response (see UIRESUME)

% uiwait(handles.figure1);

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

function varargout = testHideAndShowByRadioBtnV2_OutputFcn(hObject, eventdata, handles)

% Get default command line output from handles structure

varargout{1} = handles.output;

function inputFld1_Callback(hObject, eventdata, handles)

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

function inputFld1_CreateFcn(hObject, eventdata, handles)

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

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

end

function inputFld2_Callback(hObject, eventdata, handles)

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

function inputFld2_CreateFcn(hObject, eventdata, handles)

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

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

end

function inputFld3_Callback(hObject, eventdata, handles)

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

function inputFld3_CreateFcn(hObject, eventdata, handles)

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

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

end

% --- Executes on button press in baseHeightRbtn.

function baseHeightRbtn_Callback(hObject, eventdata, handles)

function figure1_CreateFcn(hObject, eventdata, handles)

function selectPanel_CreateFcn(hObject, eventdata, handles)

[Rik]

For general advice and examples for how to create a GUI (and avoid using GUIDE), have look at this thread.

There doesn't seem to be anything wrong with the code, although it doesn't provide the functionality to turn the visibility back on. Can you confirm you put those first 3 lines somewhere in your m-file, and not at the top of the m-file generated by GUIDE?

[Barak]

Hi Rik,

I indeed placed the if block under thus function:

function baseHeightRbtn_Callback(hObject, eventdata, handles)

but nothing seems to happen to the componnent I am trying to hise when user select that radio button 'baseHeightRbtn'

Maybe it is the wrong sub-function to place it. I also tried to move it under other functions but none seems to pick on that if-block code.

Answer 1

[Jan]

The action should be done inside the callback function, which is called, when the element is clicked:

function baseHeightRbtn_Callback(hObject, eventdata, handles)
if handles.baseHeightRbtn == 1
    set(handles.inputFld3, 'Visible', 'off');
end
end

[Barak]

I think you have an end command where it does not allow it in the guide code. the 2nd 'end' in your answer.

I placed it exactly like you did it in your answer and it did not work. When I toggle beetween the radio buttons and select the one that suppose to hide another element in the screen, nothing happens to it. it stays visible.

I am attachign the fig and function files

[Jan]

@Barak: No, the end is placed correctly. Using "end" to close function definitions is valid syntax for almost 25 years in Matlab. This "modern" style allows nested functions. But if one function in an M file has a closing end, all functions need this also.

"Nothing happens"? Are there messages in the command window? I'd expect some, because handles.baseHeightRbtn is not defined anywhere. Maybe this is the handle of the button? Then use its protery Value:

if handles.baseHeightRbtn.Value == 1
    set(handles.inputFld3, 'Visible', 'off');
end

Examine such problems using the debugger: Set a breakpoint in the code (click in the bar on the left of the editor. Matlab stops there and you can check the values of the variables:

handles.baseHeightRbtn

Can this be 1?

[Rik]

While it is true that closing functions with end is allowed for a very long time, GUIDE does not use that convention. One of the many reasons I dislike GUIDE. Unfortunately, since you cannot mix the two syntax styles, inserting a function that includes an end requires you to add an end to all other functions as well.

[Walter Roberson]

And unfortunately once you have inserted the matching end statements, GUIDE cannot properly process the code, so you cannot modify the interface using GUIDE once you have put the end in.

[Jan]

@Walter Roberson: Really?! So GUIDE stuck at the programming style of Matlab R13 (6.5) from 2003? Thanks for this clarification. So I hope that the modern AppDesigner will be developped more dynamically.

[Barak]

@Jan sorry for the late answer and late acceptance of your answer as the one that solved it.

I did not add the 2nd 'end' as @Rik mentioned in his comment it causes the Guide to terminate with errors.

The initial value was indeed 1, so toggling between the radio buttons did not hide it. I switch the orderand now it works. Thanks.

Answer 2

[Image Analyst]

The function I use to disable buttons are attached.

For example

% Disable all controls.
WasEnabled = DisableControls(handles, 'Watch');

% Re-enable all controls.
EnableControls(WasEnabled);

You can change the Enabled to Visible if you want to hide or show them instead of gray them out.