Gui cannot find the listbox1 when I run the fig file

Question

Ahmet 2015-8-3

0
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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/232168-gui-cannot-find-the-listbox1-when-i-run-the-fig-file

评论： Ahmet 2015-8-4

Dear all,

Silently, I have followed this help center for 2 years. I thank you all for you to teach me matlab from scratch. Recently, I started to work on gui matlab and I learned a lot as a beginner to gui. I couldn't figure out a problem and couldn't find an answer here.

I created a gui code. When I run it from gui editor by using the run figure (Ctrl + T) it works, but when I open the fig file by double clicking it doesn't work. The reason is the listbox cannot be recognized (Attempt to reference field of non-structure array). Here is the code for Find .xls Files button and a picture of gui design. Basically, I search the folder for certain xls files and sort them in order than load them into the matlab and make some calculations and plot normalized values and regular values. Again, The gui works when I open it from the gui editor but doesn't want to run when I click the button. I hope I was clear on describing my problem.

Thank you all,

files = dir(fullfile(pwd,'*_03_graphfiles.xls'));
set(handles.listbox1,'Max',2,'Min',0,'string',{files.name});
files = dir(fullfile(pwd,'*_04_graphfiles.xls'));
set(handles.listbox3,'Max',2,'Min',0,'string',{files.name});
files = dir(fullfile(pwd,'*_05_graphfiles.xls'));
set(handles.listbox4,'Max',2,'Min',0,'string',{files.name});
set(handles.listbox1, 'Value', []);
set(handles.listbox3, 'Value', []);
set(handles.listbox4, 'Value', []);
set(handles.listbox5, 'Value', []);

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Answer 1

Geoff Hayes 2015-8-3

1
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https://ww2.mathworks.cn/matlabcentral/answers/232168-gui-cannot-find-the-listbox1-when-i-run-the-fig-file#answer_188094

在 MATLAB Online 中打开

Ahmet - double-clicking on the figure file will not launch the GUI in a way that you can use it. All that you will observe, is the figure with its controls. Opening the GUI in this way skips certain variable initializations that would normally occur when you launch the GUI correctly.

A GUI can only be launched through GUIDE, by pressing the run button while viewing/editing the GUI m file in the editor, or by calling your GUI by name from the command line as

>> myGui