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

Question

Luong Son 2014-4-24

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评论： per isakson 2014-4-26

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('

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Sara 2014-4-24

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

Luong Son 2014-4-25

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

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Answer 1

per isakson 2014-4-24

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编辑：per isakson 2014-4-24

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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

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Answer 2

Luong Son 2014-4-24

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编辑：Luong Son 2014-4-24

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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.