CODEWITHSUNDEEP
matlabuser-interface
Matthias Pospiech
Matthias Pospiech

Reputation: 3488

Close all GUI:s if main GUI is closing

I can close my main gui with a menu or the x button

function menuProgramQuit_Callback(hObject, eventdata, handles)
close(handles.figure1);

However at the same time a sub gui dialog might be open

function pushbuttonCalibrationConfigure_Callback(hObject, eventdata, handles)
calibrationOutput = uiConfigureCalibration('uiMain', handles.figure1);
waitfor(calibrationOutput);
guidata(handles.output,handles);

If the main figure was close the sub gui is not and further it crashes when he subgui (here uiConfigureCalibration) is closed, because the figure handle of the main gui is invalid.

So how can I close all sub guis in matlab before I close the main gui ?

EDIT: I changed the code such that the called dialog saves its handle to the handles of the main dialog

function uiConfigureCalibration_OpeningFcn(hObject, eventdata, handles, varargin)
% Choose default command line output for uiConfigureCalibration
handles.output = hObject;
% Update handles structure
guidata(hObject, handles);
% save handle of calling gui
mainGuiHandleIndex = find(strcmp(varargin, 'uiMain'));
if ~isempty(mainGuiHandleIndex)
    handles.mainHandle = varargin{mainGuiHandleIndex+1};
    handlesMain = guidata(handles.mainHandle);
    handlesMain.('openfigures').('calibration') = handles.figure1;
    guidata(handles.mainHandle, handlesMain);
    guidata(handles.figure1, handles);
end

In the closing function in the main gui I can no check if the figure us open and close it before the main figure is closed

if isfieldRecursive(handles, 'handles.openfigures.calibration') 
    close(handles.openfigures.calibration);
end
close(handles.figure1);

That however changes nothing. The sub-dialog figure is only closed AFTER the main dialog closes and the whole code crashes again.

Why is the figure of the sub dialog NOT closed with the close command?

Upvotes: 1

Views: 4052

Answers (3)

Matt
Matt

Reputation: 2802

I had a similar problem where my gui would spawn other guis, namely an option gui and a log gui. In my main app I had things like this.

logFH = CreateLog;
optFH = CreateOptions;

These functions would create figures and return the handles. The handles can be saved in gui handles or with setappdata and getappdata. Later when I would close the main function.

if (isgraphics(logFH))
    close(logFH);
    delete(logFH);
end

Upvotes: 0

yzhou5
yzhou5

Reputation: 123

I just had the same problem, I wanted to close all the existing GUI windows when opening the main window.

I write an .m function:

function closeAll()
clear all, close all, fclose('all'), clc, warning('off','MATLAB:xlswrite:AddSheet'); %   close all opened items and clear Matlab workspace
end

and call this function in the GUI OpeningFcn or anywhere it is needed.

Upvotes: 0

slayton
slayton

Reputation: 20319

You can do this with the CloseRequestFcn figure property.

This will let you intercept the requests to delete a figure and then handle those requests as you see fit.

Here is a simple function that illustrates how to use the CloseRequestFcn to achieve the behavior you are describing above:

function figTest()

f1 = figure('UserData', 1, 'Position', [100 500 50 50]);
f2 = figure('UserData', 2, 'Position', [200 500 50 50]);

set(f1,'CloseRequestFcn', @preCloseMain);

function preCloseMain(src, e)


  % Delete f2, in try-block incase it was already closed
  try 
    fprintf('Closing non-main figures!\n');
    close(f2);
  end 
  fprintf('Closing main figure!\n');     
  delete(src);
end

end

Here are the official docs.

Upvotes: 1

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