How to read in big parts of text to my code

What I want to do is to ask the user to write in the text that they want to decrypt. Not only a single sentence but big parts of text with multiple rows, commas, indentations and so on (for example a letter). How do I do this? I've tried using input but that only works for short sentences.

[Bob Thompson]

Why not just load a text file? Then you can use uigetfile() or something similar for a user input.

[Malin Dyberg]

But if I want it to look something like:

"Write in your text: "

And then the user writes a long text (which the program then will decrypt).

[Jan]

If you want the users to type in a large text, let them do this in an editor. E.g. Matlab's built-in editor or an external one. Re-inventing the wheel by creating an editor in a Matlab-GUI is off track.

[Rik]

If you insist of using Matlab tools, you could use the edit type uicontrol (enable multi-line by setting the max property to the maximum number of lines you allow your user to type).

[Malin Dyberg]

Ok thanks. I'll figure something out :)

Answer 1

[Akshay Khadse]

This could easliy be done by writing a function to use dialog with an edit uicontrol in MATLAB based on the following example:https://www.mathworks.com/help/matlab/ref/dialog.html#bungryc-2_1

I happen to use the following function for such tasks:

function out = textIn
    close all; clear; clc
    f = dialog('Position', [1000 1000 320 150],...
               'MenuBar', 'none',...
               'Name','Enter Text',...
               'NumberTitle','off');

    uicontrol('Parent',f,...
              'Style','edit',...
              'Max',2,...
              'Min',0,...
              'Position', [10 42 300 100],...
              'HorizontalAlignment','left',...
              'Callback', @editCallback);

    uicontrol('Parent',f,...
              'Style','pushbutton',...
              'String','OK',...
              'Position', [235 10 75 25],...
              'Callback', "delete(gcf)");
          
    uiwait(f);

    function editCallback(h,~)
        out = h.String;
    end
end