h(i) = strcat('ha​ndles.uipa​nel',num2s​tr(i)), when I use set(h(i),'Visible','ON') ,it doesn't work

Well ,I have a for ...end

for b=1:9
    h = strcat('handles.uipanel',num2str(b));
    set(h,'Visible','ON');
end

Error:Error using set; Value must be a handle.

Thank you for your help!

Answer 1

[Walter Roberson]

http://matlab.wikia.com/wiki/FAQ#How_can_I_create_variables_A1.2C_A2.2C....2CA10_in_a_loop.3F

In your situation you could use the dynamic fieldname approach.

[Jan]

I would even prefer not to let GUIDE create "handles.uipanel1", "handles.uipanel2", ..., but to create an array instead: "handles.uipanel(1)", etc. Then the loop can be omitted:

set(h.uipanel, 'Visible', 'ON');

But unfortunately the automatic code generation in GUIDE prefers to append the index to the name of the field. Then Walter's suggestion means:

for b = 1:9
  set(handles.sprintf('uipanel%d', b), 'Visible', 'on');
end

[Lisa Wu]

Thank you very much! As you said ,I have used an array!