How to use 'Edit Text' efficiently in a GUI?

8 visualizaciones (últimos 30 días)
Lisa Wu
Lisa Wu el 23 de Nov. de 2012
Comentada: siddharth el 9 de Dic. de 2014
I notices that there are two ways to ues it;
The tag of edit1 is edit1.
Method 1:
function edit1_callback()
num1 = get(hObject,'string');
handles.num1 = num1;
guidatda(gcbo,handles); % why need this command?
function pshbtn1_callback()
y = handles.num1;
guidata(gcbo,handles); % why need it too?
Method 2:
function pshbtn_callback()
y = str2num(get(hObject,handles));
As shown above, what's the difference? And the effect of "guidata(gcbo,handles)" ? Thank you very much!
  2 comentarios
Lisa Wu
Lisa Wu el 23 de Nov. de 2012
The Method 2 should be:
y = str2num(get(handles.edit1,'string'));
siddharth
siddharth el 9 de Dic. de 2014
the second method works just fine. Thanks

Iniciar sesión para comentar.

Respuesta aceptada

Arthur
Arthur el 23 de Nov. de 2012
If you use guidata(gcbo,handles), you save the string of your textbox in the 'handles' structure; in your pshbtn_callback you subsequently read this value from handles again. I personally prefer method 2, where you read out the string of the textbox in the button callback. This has a few advantages:
  • you only use the handles structure for what it's supppost to (storing handles)
  • you retrieve the string at the very moment you need it (ensures that you have the string that is actually shown in the textbox)
Method 1 is not wrong though, it will work.

Más respuestas (0)

Categorías

Más información sobre Environment and Settings en Help Center y File Exchange.

Etiquetas

Productos

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by