using output of one button as an input in another button

first i am using following command to get path and filename:

[filename,pathname] = uigetfile('*txt');

then i want to give these output (pathname and filename) as an input to another push button. how can i do so to link it?

[DGM]

If by "... input to another push button" you mean "make available to another button control's callback function", you'd do that the same way you make any variable accessible between functions. You can either pass it explicitly when the function is called, or if the local functions are nested in the main function, you can make use of shared variables. As this is a GUI, you could also use guidata.

[ali hassan]

https://www.mathworks.com/matlabcentral/answers/1637905-using-output-of-one-button-as-an-input-in-another-button#comment_1958730

how can i explicitly pass it?

[DGM]

How and whether it's practical depends entirely on how your code is structured and what you're trying to do. If you're trying to call another CBF directly without a button press, then you'd just pass it like you would any other function. If you're not trying to call the CBF directly, it probably wouldn't make sense to pass arguments directly like that.

I imagine most people might recommend using guidata, but I tend to use shared variables in GUI code.

Answer 1

[Rik]

If you really want to, you can call the callback function like any other function.

However, it makes much more sense to only use buttons to call functions. There is no rule against two callbacks ending up calling the same function. Something like this:

function callback1(hObject,eventdata)
[filename,pathname] = uigetfile('*txt');
filename=fullfile(pathname,filename);
somefunction(filename)
end
function callback2(hObject,eventdata)
handles=guidata(hObject);
somefunction(handles.filename)
end
function somefunction(filename)
disp(fileread(filename))
end

As DGM mentions, there are several ways to share data between different parts of your GUI, using guidata or nested functions are only two. For general advice and examples for how to create a GUI (and avoid using GUIDE), have look at this thread.

[Rik]

Comment posted as answer by @ali hassan:

from open selected menu, i am running command:

[filename,pathname] = uigetfile('*.txt');

then i am using it in my function update button, but i want to know that how can i do so?

[Rik]

[filename,app.pathname] = uigetfile('*.txt');
%          ^^ that will probably work

You do need to make sure that openMenuSelected is called befor UpdateButtonPushed runs. You can do that fairly easily:

function UpdateButtonPushed(app,event)
%make sure the file path is selected
if isempty(app.pathname),UpdateButtonPushed(app,event),end
...
end