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

26 次查看（过去 30 天）
Lisa Wu
Lisa Wu 2012-11-23
评论： siddharth 2014-12-9
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!

请先登录，再回答此问题。

采纳的回答

Arthur
Arthur 2012-11-23
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.

更多回答（0 个）

类别

在 Help Center 和 File Exchange 中查找有关 Environment and Settings 的更多信息

标签

产品

Community Treasure Hunt

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

Start Hunting!

Translated by