How can i select (check off) multiple checkboxes?

Question

Mihai 2012-10-26

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https://ww2.mathworks.cn/matlabcentral/answers/51985-how-can-i-select-check-off-multiple-checkboxes

评论： Rafael Campos 2018-10-27

I am working on a GUI that has a lot of checkboxes. I'd like to the user to be able to press a button that selects all of them at once.

The tags of the checkboxes are chk1, chk2, chk3...

I tried something similar to the following code, but it's giving me an error...

for i = 1:5
  set(sprintf('handles.chk%d',i),'value', 1)
end

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Sean de Wolski 2012-10-26

Is this GUI made in GUIDE?

Mihai 2012-10-26

Yeah it is

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Answer 1

Azzi Abdelmalek 2012-10-26

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https://ww2.mathworks.cn/matlabcentral/answers/51985-how-can-i-select-check-off-multiple-checkboxes#answer_63368

编辑：Azzi Abdelmalek 2012-10-26

在 MATLAB Online 中打开

for ii = 1:5
set(handles.(sprintf('chk%d',ii)),'value', 1)
end

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Azzi Abdelmalek 2012-10-26

Thanks Matt

Rafael Campos 2018-10-27

在 MATLAB Online 中打开

Hi Azzi!

I am working on a GUI on app Designer that has 200 checkboxes. They have tags like "app.CheckBox_X_Y", where X can have values from 1 to 50 and Y can have values from 1 to 4.

I'd like to change the state of the last checkbox and this must change the state of all others at once.

I tried the following code, but it's giving me error "Error using set - Invalid handle". Can someone help me?

          function CheckBoxPelota_X_1ValueChanged(app, event)
              if app.CheckBoxPelota_X_1.Value == 0
                  for cont1 = 1:1:50
                      for cont2 = 1:1:4
                          set(sprintf('app.CheckBoxPelota_%d_',cont1),'Value', 1);
                      end
                  end
              else
                  for cont1 = 1:1:50
                      for cont2 = 1:1:4
                          set(sprintf('app.CheckBoxPelota_%d_',cont1),'Value', 0);
                      end
                  end
              end
          end
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Answer 2

Evan 2012-10-26

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https://ww2.mathworks.cn/matlabcentral/answers/51985-how-can-i-select-check-off-multiple-checkboxes#answer_63366

编辑：Evan 2012-10-26

在 MATLAB Online 中打开

If you want to avoid using a for loop, the following functions might be useful:

    help findobj
    help regexp

Assuming that all your wanted checkboxes have tags of the form chkn where n = 1,2,3... and assuming there are no other checkboxes with tags of the form chkn that you want to exclude, I believe the following will set the values of all your checkboxes to 1 at once:

set(findobj('Style','checkbox','-regexp','Tag','chk[0-9]'),'Value',1)