Uicontrol callback stops working in new session

Question

Rebekah Orozco 2019-10-29

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/488174-uicontrol-callback-stops-working-in-new-session

回答： Vishnu priya v 2022-9-19

MATLAB question sample.fig

I'm using the 2013a version of MATLAB to programmatically add uicontrols (textbox and togglebutton) to figures.The togglebutton is intended to toggle text labels that have been added to data points that appear to be outliers in the plot (see attached figure). If I close the figure in the same session as it was created in and re-open the figure the callback function still works. But when I close the matlab session and re-open the figure, I receive this error message after clicking the togglebutton :

Undefined function handle.
Error while evaluating uicontrol Callback

This is the code for setting up the uicontrols:

% Create textbox object with the formatted bad channel list and adjust background color to match figure background color.
textbox = uicontrol('Style', 'text','Units', 'pixels', 'Position',[figOuterPos(3)-60 figOuterPos(4)-530 90 400], ...
    'String', bad_chan_list_formatted, 'BackgroundColor', get(figHandle,'Color'));
figPos = get(figHandle, 'Position');
% Adjust figure position in the y-direction by 5 pixels
set(figHandle, 'Position', [figPos(1) figPos(2) figPos(3) figPos(4)-5]);
handles = guihandles(figHandle);
textLabelObjs = findobj('Tag', 'BadChanLabel'); % Get all text label objects from figure through a tag
% Add toggle button above the bad channel list in figure to hide or show labels.
label_btn = uicontrol('Style', 'togglebutton','String', 'Toggle Labels',...
    'Units','pixels','Position',[figOuterPos(3)-55 figOuterPos(4)-120 90 25], ...
    'Callback',{@label_visibility},'UserData',textLabelObjs);

And this is the code for my callback function:

function label_visibility(hObject, eventData) %#ok<INUSL>
    textObj = get(hObject, 'UserData');
    value = get(hObject,'Value'); 
    if value == 1
        set(textObj,'Visible','off'); % Hide text labels
    else
        set(textObj,'Visible','on'); % Show text labels
    end
     
end