GUI, make a handle disappear

Question

Marc Martinez Maestre 2020-8-19

0
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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/581591-gui-make-a-handle-disappear

评论： Marc Martinez Maestre 2020-8-24

采纳的回答： Adam Danz

在 MATLAB Online 中打开

Hey, I am MArc and I have a question about a GUI. have this GUI interface:

I want to achieve that when clicking both pink clickboxes I want to make all the red handles disappear. I tried with a function using the button 2, like this:

    methods (Access = private)
        
        function Button2Pushed(app, event,handles)
            
            value1= get(handles.PRETESSATRECTECheckBox,'Value')==0;
            value2= get(handles.PRETESSATENCASTAMENTCheckBox,'Value')==0;
            value3= get(handles.PRETESSATPARABLICCheckBox,'Value')==1;
            value4= get(handles.ntramsCheckBox,'Value')==1;
            
            if value1 && value2 && value3&& value4
                set(handles.LmEditField_3, 'Visible', 'off');
                set(handles.readelaseccim2EditField_2, 'Visible', 'off');
                set(handles.LNmEditField_2, 'Visible', 'off');
                set(handles.Inrciam4EditField_2, 'Visible', 'off');
                set(handles.AmpladadelaseccimEditField_2, 'Visible', 'off');
                set(handles.ncordonsEditField_2, 'Visible', 'off');
                set(handles.Sigma_uMPaEditField_2, 'Visible', 'off');
                set(handles.Sigma_yMPaEditField_2, 'Visible', 'off');
                set(handles.CargapermanentKNm2EditField, 'Visible', 'off');
                set(handles.SobrecargavariableKNm2EditField, 'Visible', 'off');
                set(handles.SobrecargavariableKNEditField, 'Visible', 'off');
                set(handles.PuntualKNEditField, 'Visible', 'off');
                set(handlesD_vainammEditField, 'Visible', 'off');
            else
                set(handles.LmEditField_3, 'Visible', 'on');
            end
        end
        end

But it does not work, it does nothing. I would like some advice, thank you

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Marc Martinez Maestre 2020-8-20

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Yes, maybe is that it is not called, but I do not understand why, because it is located at the top of the code, previous to anything.

This is part of the code:

methods (Access = private)
function CheckBoxValueChanged(app, event)
    % Get values of all checkboxes
    cb(1) = app.PRETESSATPARABLICCheckBox.Value;
    cb(2) = app.ntramsCheckBox.Value;
    % Toggle the visibility flag depending on checkbox states
    if all(cb)
        visibleFlag = 'off';
    else
        visibleFlag = 'on';
    end
    app.LNmEditField_2.Visible = visibleFlag;
    app.LmEditField_3.Visible = visibleFlag;
    % etc...
end
  end  
    % Callbacks that handle component events
    methods (Access = private)
        % Button pushed function: Button
        function ButtonPushed(app, event)
            value1= get(app.PRETESSATRECTECheckBox,'Value');
            value2= get(app.PRETESSATENCASTAMENTCheckBox,'Value');
            value3= get(app.PRETESSATPARABLICCheckBox,'Value');
            value4= get(app.ntramsCheckBox,'Value');
            if value1==0 && value2==0 && value3==0
                msgbox(sprintf('Enter a valid selection'),'Error','error');
            end
            
            if value1==1 
                %---------------------------------------------------------------------------------------------------------------------------------------------------%
                %-------------------------------------------------------------------PRETESSAT RECTE-----------------------------------------------------------------%
                %---------------------------------------------------------------------------------------------------------------------------------------------------%
                % Lllegir els valors previs
                h_var = app.hcmEditField.Value;
            end
        end

So, it should be called, shouldn't it?

Rik 2020-8-20

在 MATLAB Online 中打开

Change this

function CheckBoxValueChanged(app, event)

to this

function CheckBoxValueChanged(app, event)
uiwait(msgbox('the function was called'));

Then you know for sure if it is called or not.

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Answer 1

Adam Danz 2020-8-19

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/581591-gui-make-a-handle-disappear#answer_482270

在 MATLAB Online 中打开

"I want to achieve that when clicking both pink clickboxes I want to make all the red handles disappear. "

The function you shared requires two checkboxes to be not-selected and two to be selected. That doesn't match your description.

Also, the checkbox detection needs to happen when any of the applicable checkboxes are toggled. If the detection only exists in 1 checkbox callback, toggling the other one will have no effect.

To avoid having 2 copies of the same code, assign the same CheckBoxValueChanged function to each applicable checkbox.

function CheckBoxValueChanged(app, event)
    % Get values of all checkboxes
    cb(1) = app.CheckBox.Value;
    cb(2) = app.CheckBox2.Value;
    % Toggle the visibility flag depending on checkbox states
    if all(cb)
        visibleFlag = 'off';
    else
        visibleFlag = 'on';
    end
    app.LNmEditField_2.Visible = visibleFlag;
    app.LmEditField_3.Visible = visibleFlag;
    % etc...
end

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Marc Martinez Maestre 2020-8-20

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Thank you so much Adam, that is exactly what I meant. I tried it but it does not do anything, could you check this part of the code, because maybe i wrote it in the wrong place.

methods (Access = private)
function CheckBoxValueChanged(app, event)
    % Get values of all checkboxes
    cb(1) = app.PRETESSATPARABLICCheckBox.Value;
    cb(2) = app.ntramsCheckBox.Value;
    % Toggle the visibility flag depending on checkbox states
    if all(cb)
        visibleFlag = 'off';
    else
        visibleFlag = 'on';
    end
    app.LNmEditField_2.Visible = visibleFlag;
    app.LmEditField_3.Visible = visibleFlag;
    % etc...
    if cb(1)==1
        msgbox(sprintf('Vector longitud de tram i repartida han de tenir la mateixa longitud'),'Error','error');
    end
end
  end  
    % Callbacks that handle component events
    methods (Access = private)
        % Button pushed function: Button
        function ButtonPushed(app, event)
            value1= get(app.PRETESSATRECTECheckBox,'Value');
            value2= get(app.PRETESSATENCASTAMENTCheckBox,'Value');
            value3= get(app.PRETESSATPARABLICCheckBox,'Value');
            value4= get(app.ntramsCheckBox,'Value');
            if value1==0 && value2==0 && value3==0
                msgbox(sprintf('Enter a valid selection'),'Error','error');
            end
            
            if value1==1 
                %---------------------------------------------------------------------------------------------------------------------------------------------------%
                %-------------------------------------------------------------------PRETESSAT RECTE-----------------------------------------------------------------%
                %---------------------------------------------------------------------------------------------------------------------------------------------------%
                % Lllegir els valors previs
                h_var = app.hcmEditField.Value;
            end
        end

Thank you in advance

Adam Danz 2020-8-20

Here are the steps you need to take to fix the proble.

1) Add ValueChangeFcn callback function to one of the check boxes. Right-click the checkbox to show the menu you see below. That will add a new function in Code View.

2) Set up the function I provided in my answer. Note that the function in my answer is a demo. You'll need to understand what's going on in that function and adapt it to your needs. If you have specific questions with that, I can help.

3) Go back to Design Mode and right-click the other checkbox. This time, instead of adding a new ValueChangeFcn, you're going to select an existing callback, and select the function you just added.

4) Clean up the old stuff in your code.

To test it, I used the first 2 checkboxes to turn off/on a few components in the right column.

Marc Martinez Maestre 2020-8-24

Thank you soo much, really awesome answer and really guided. Thank you

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Answer 2

Ruger28 2020-8-19

1
链接

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https://ww2.mathworks.cn/matlabcentral/answers/581591-gui-make-a-handle-disappear#answer_482261

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As suggested above, make all of the items you would like to "disappear" (turn visibility off) by lumping them together in a single handle. Below is a quick example I threw together.

% in the opening function before gui is made visible
handles.MyEditBoxes = [handles.edit1,handles.edit2,handles.edit3,handles.edit4,handles.edit5];

Then for your pushbutton, get the values of the two checkboxes, and AND them.

% --- Executes on button press in pushbutton1.
function pushbutton1_Callback(hObject, eventdata, handles)
value1 = get(handles.checkbox1,'Value');
value2 = get(handles.checkbox2,'Value');
if value1 && value2
    set(handles.MyEditBoxes,'Visible','off');
else
    set(handles.MyEditBoxes,'Visible','on');
end

This will hide/unhide the items in MyEditBoxes.

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Marc Martinez Maestre 2020-8-20

Thank you Ruger28 but, how would it be to set the visibility off only by clicking two checkboxes?

Thank you

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GUI, make a handle disappear

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