[MATLAB GUI] How can I add a string to the last line in multiline EditText?

• Hi all,
• I often use this way to add a string to the last line in multiline editText:
• Example: The before editText: (handles.txtLine)
• "line 1
• line 2
• line 3"
• and i want to add string "line 4" to it. So i do:
• msg = get(handles.txtLine,'string');
• msg_i = sprintf('

[Sara]

why do you want to do it differently? Is it too slow, complicate,...?

[Luong Son]

I have a program to transfer and receiver data and display data in EditText. It's the same with Yahoo Messenger. And in my way, i can't do. :D

[Sara]

Do you get any particular error in doing it your way? Can you post the exact code you are using?

[Luong Son]

Hi, My question is below! Can u help me resolve :D! Thanks advance

Answer 1

[per isakson]

To me it isn't clear what your problem is. Anyhow there is no alternative to

    set( h, 'String', string_values )
    ...
    string_values = get( h, 'String' );
    % add new line to string_value and
    set( h, 'String', string_values )

However, I find it more convenient to use a cell array of strings for string_values. Doc says: For multiple line editable text [...] line breaks occur [...] each cell of a cell array of strings

Answer 2

[Luong Son]

Hi! This is my source code: http://www.mediafire.com/download/4vhb8xr0b0ssgrb/TEST_GUI.rar

• I have 2 buttons: Receive and Send.
• The first, I click button Receive. EditText become:

Receive: 2
Receive: 1

• The EditText will be update constantly:

Receive: i
...
Receive: 2
Receive: 1

• Next, I click button Send. I want my EditText become:

Receive: 3
Send: OK
Receive: 2
Receive: 1

• In fact, when I click button Send, String "Send: OK" was added, but it disappear immediately. And I can't understand why it disappear! Can u help me resolve it?P/S: My English is not well. Thanks for reading.

[per isakson]

I stepped through your code but gave up. Obviously the string, "Send: OK", is not handled as you (and I) expect by guidata and handles.Mes.

First step might be to rename

    pushbutton1_Callback

to something that includes the string

    Receive