Wait for app to close before continuing with script

Hi,

I'm a newb to using App Designer. I've built the GUI that works wonderfully, and can open it programmatically from my main .m script. However, I cannot for the life of me figure out how to force the .m script to wait for the App GUI to close. I figure it has something to do with assigning modality in App Designer. I've tried using a waitfor indexing with a variable written to my base workspace from the app to no avail. I've tried using a while condition, also to no avail. Are there any ways to make the main script wait for the app to close before continuing?

Answer 1

[Mario Malic]

Hello Frankie,

Here's an example how to do it.

app = NameOfApp;
while isvalid(app); pause(0.1); end

[Fernando]

Thank you so much - that worked perfectly. Kicking myself on how simple that was now!

[Adam Danz]

+1

also see waitfor

% [pre-app code]

app = myapp;  % open app
waitfor(app)  % wait for app to close

% [post-app code

[Rauf Iftikhar]

What if i have inputs and outputs for the app? My code is essentially this:

[x,y] = DGUI(x, y, d); %%code i need to run 

[x,y] = waitfor(DGUI(x,y,d));  %error in waitfor --> too many output arguments 

Thanks

[Mario Malic]

Does this even work? Asking because I am not sure if app supports input arguments or if DGUI is name of the app or function.

[x,y] = DGUI(x, y, d); %%code i need to run 

[Rauf Iftikhar]

Has worked from the command line but not fully when run from the script. As I understand GUI's have varargin parameter and varargout output and thus can have multiple inputs/outputs.

[Mario Malic]

Does the figure close when this line is executed? You're talking about app made in GUIDE?

[x,y] = DGUI(x, y, d)

[Rauf Iftikhar]

no the figure opens at that command and closes on the CloseRequestFcn

[Mario Malic]

If it's made by guide and can be detected by gca, you can try with the code below, otherwise, see step 2 of this answer

fig = gca;
if isvalid(fig)
    waitfor(fig);
end

You can try removing CloseRequestFcn, write a public function so you could close it in your script.