Creating a delete button in App Designer

Hello!

I'm relatively new to MATLAB and programming. I'm making a simulation in App Designer to mimic a keypad interface.

I have buttons from 0-9, a clear all button, a delete button an output button that displays the text inputted and takes you to another app window when the output button is pushed.

What should I write in the delete button callback so that when the delete button is pushed it deletes the last character in the output display?

Here is what I have so far...

% Button pushed function: 1Button
function 1ButtonPushed(app,event)
    str = strcat(app.OutButton.Text, '1');
    app.OutButton.Text = string(str);
end

% Button pushed function: 2Button
function 2ButtonPushed(app, event)
    str = strcat(app.OutButton.Text, '2');
    app.OutButton.Text = string(str);
end

% Button pushed function: 3Button
function 3ButtonPushed(app, event)
    str = strcat(app.OutButton.Text, '3');
    app.OutButton.Text = string(str);
end

% And so on for the rest until 0...

% Button pushed function: ClearButton
function ClearButtonPushed(app, event)
    app.OutButton.Text = '';
end

% Button pushed function: DelButton
function DelButtonPushed(app, event)
    ???
end

% Button pushed function: OutButton
function OutButtonPushed(app,event)
    app2
    closereq;
end

Answer 1

[Geoff Hayes]

Leah - your delete button callback could look something like

function DelButtonPushed(app, event)
    app.OutButton.Text = app.OutButton.Text(1:end-1);
end

I'm assuming that app.OutButton.Text is just a string that we can then remove the last character from.