How to create a search box in List Box in MATLAB GUI?
42 views (last 30 days)
Show older comments
Harsh Mittal
on 13 Aug 2021
Answered: Image Analyst
on 13 Aug 2021
I have a listbox in my MATLAB GUI, it contains 200 items to select from. I want to add a search option in my listbox so that I can select the items from the list box easily, is there any way to do this?
2 Comments
Adam Danz
on 13 Aug 2021
You can add a textbox to your GUI. The callback of the textbox will update the listbox list by deciding which values are a match to the string in the text box. You may want to use startsWith, endsWith, regexp, regexpi, contains, or another string matching function.
Accepted Answer
Image Analyst
on 13 Aug 2021
I agree with Adam. I'd put an edit text box right above the listbox. Maybe with a button beside it if you want. Then in the callback for the edit text box, and the button callback if you have a button, call a function called LoadListBox(). In that function do something like (untested)
function handles = LoadListBox(handles)
% Get the folder you're working in.
folder = handles.folder; % or wherever....
% Get edit text box pattern
filePattern = strtrim(handles.edtSearch.String);
% Prepend the folder.
if isempty(filePattern)
% Handle case where the edit box is empty.
filePattern = fullfile(folder, '*.*'); % List all files.
else
% Case where they entered something into the edit text box.
% See if they put an extension. If they didn't, add star.
if ~contains(filePattern, '.') || endsWith(filePattern, '.')
% No dot, or else ends with dot but has no extension. Add wildcard extension.
filePattern = [filePattern, '.*']; % Append dot star.
end
filePattern = fullfile(folder, filePattern);
end
% Call dir to get a list of files matching the filter.
fileList = dir(filePattern);
% Send the list of base file names into the listbox control.
handles.lstFilebox.String = {fileList.name};
% Old Value (from prior folder listing) cannot be greater than the number of files in this folder or
% else the listbox won't appear. It it's longer, make it 1.
if handles.lstFilebox.Value > length(handles.lstFilebox.String)
handles.lstFilebox.Value = 1;
end
0 Comments
More Answers (0)
See Also
Categories
Find more on Environment and Settings in Help Center and File Exchange
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!