Passing varibales between two callback in GUI

Question

Ricardo Duarte 2020-9-18

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/596059-passing-varibales-between-two-callback-in-gui

评论： Ricardo Duarte 2020-9-21

采纳的回答： Mohammad Sami

在 MATLAB Online 中打开

Dear all,

I really need your help.

I'm new using Gui and I'm trying to use one variable in one callback that was calculated previously in other callback.

Let's say:

I have this first callback, named - pushbutton2_selectfile:

function pushbutton2_selectfile_Callback(hObject, eventdata, handles)
% hObject    handle to pushbutton2_selectfile (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)

where I have for example the following code:

[xbit,Fs] = audioread(fullfile(path,ifile),'native');

Now, I have another callback (called "pushbutton3_RUN") where I need to use the varibales xbit and Fs

function pushbutton3_RUN_Callback(hObject, eventdata, handles)
% hObject    handle to pushbutton3_RUN (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)

I trying to do so by using:

  set(handles.pushbutton2_selectfile,'userdata',xbit); %in the first callback
  
  xbit=get(handles.pushbutton2_selectfile,'userdata'); %in the second callback

However i never receive the rigth result.

What am I doing wrong and how can I solve this problem.

Thank you very much for your time and help.

0 个评论
显示 -2更早的评论隐藏 -2更早的评论

请先登录，再进行评论。

请先登录，再回答此问题。

Answer 1

Mohammad Sami 2020-9-19

1
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/596059-passing-varibales-between-two-callback-in-gui#answer_497089

编辑：Mohammad Sami 2020-9-19

Use the function setappdata and getappdata instead. An example is shown here in the documentation. https://www.mathworks.com/help/matlab/creating_guis/share-data-among-callbacks.html

You have two options, you can read the section titled Store Data as Application Data Or Store Data Using the guidata Function