MATLAB: Gui interface code question.

matlab guimetric conversion

Hello there :), Im coding for a converter Gui. Im a starter so im having troubles in using codes. anyways..I just wanna know how can multiply variables in gui?

screen = get(handles.text1, 'String');

screen = (screen*2.54);

set( handles.text1, 'String', screen)

this is my code for converting an expected input of inch to centimeters, what is wrong here? the answer I get is wrong.

Best Answer

What you need to remember is that you are getting a string, not a number. If you want to use it as a number, you must convert from a string to a number. Then if you want to use the result as a string you need to convert from a number to a string.

screen = str2double(get(handles.text1, 'String'));  
screen = (screen*2.54);
set( handles.text1, 'String', num2str(screen))

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could you make it simplier? im a starter in gui making.

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Hello Mania,

You can achieve your requirement, by creating new function in your code file (i.e. in .m file of your GUI).

1. Simply create new function at the end of your actual code as shown below:

function default(hObject, handles)
    set(handles.text1, 'string', 'WhateverYouWant_But_InStringFormat');
    set(handles.text2, 'string', 'WhateverYouWant_But_InStringFormat');
    set(handles.text3, 'string', 'WhateverYouWant_But_InStringFormat');
    .
    .
    .
    set(handles.text17, 'string', 'WhateverYouWant_But_InStringFormat');
    guidata(hObject, handles);
end

2. Call this function in the Opening function of your GUI as follows:

function xxxxxx_OpeningFcn(hObject, eventdata, handles, varargin)
% lines of code
.
.
default(hObject, handles);
.
.
guidata(hObject, handles);
end

You can call function "default()" wherever you want, in callback function of any button/field of your GUI to make the text value default, as per your requirement.

Try for this and let me know if you face any issue.

Best Answer

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