How can i select (check off) multiple checkboxes?

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Mihai
Mihai 2012-10-26
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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采纳的回答

Azzi Abdelmalek
Azzi Abdelmalek 2012-10-26
编辑：Azzi Abdelmalek 2012-10-26
for ii = 1:5
set(handles.(sprintf('chk%d',ii)),'value', 1)
end
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Rafael Campos
Rafael Campos 2018-10-27
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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更多回答（1 个）

Evan
Evan 2012-10-26
编辑：Evan 2012-10-26
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)

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