Opening Function, Close GUI Confirmation, and Reset Button

There are a couple other modifications that must be done to the opening function. In addition, this section will also introduce a “Reset Button” to the GUI.

  1. First, lets deal with the opening function. Here, we are going to add the standard tool bar and the “close GUI confirmation dialog”. 

    %%
function data_processing_tool_OpeningFcn(hObject, eventdata, handles, varargin)
 
handles.output = hObject;
set(hObject,'toolbar','figure'); %enables toolbar
 
%this variable used to prevent users from breaking the GUI
%the variable is set to 1 once the data has been processed
handles.processDataCompleted = 0; %
 
%this command asks the user to confirm closing of GUI
set(handles.figure1,'CloseRequestFcn','closeGUI');
 
% Update handles structure
guidata(hObject, handles);

    For more information on the “Close GUI Confirmation”, you can visit this post.

    function closeGUI
 
selection = questdlg('Do you want to close the GUI?',...
                     'Close Request Function',...
                     'Yes','No','Yes');
switch selection,
   case 'Yes',
    delete(gcf)
   case 'No'
     return
end

    Data Processing GUI

  2. Now, for the reset button. Resetting your GUI to the default state can save the user a lot of time and fustration. Instead of closing and opening the GUI to get to the starting state, the user can simply click on the “reset” button. 

    function reset_pushbutton_Callback(hObject, eventdata, handles)
%resets the GUI by clearing all relevant fields
 
handles.processDataCompleted = 0;
 
%clears the axes
cla(handles.axes1,'reset');
 
%set the popupmenu to default value
set(handles.plot_popupmenu,'Value',1);
 
%clears the contents of the listbox
set(handles.inputFiles_listbox,'String','');
set(handles.inputFiles_listbox,'Value',0);
 
%updates the handles structure
guidata(hObject, handles);

This is the end of the tutorial.

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