Changing color of a string in listbox - MATLAB GUI

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Vincent I
Vincent I on 14 Jun 2012
I have a list of names in a listbox. What I would like to do is have a certain selected name change color, from red to green, when I click a button.
Thank you

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Accepted Answer

Walter Roberson
Walter Roberson on 14 Jun 2012
Don't add the name directly: add the HTML-ized version of the name.
htmlname = sprintf('<HTML><BODY bgcolor="%s">%s', 'red', ThisEntryName);
And in the callback:
namestr = cellstr(get(hObject, 'String'));
validx = get(hObject, 'Value');
newstr = regexprep(namestr{validx}, '"red"','"green"');
namestr{validx} = newstr;
set(hObject, 'String', namestr);

More Answers (6)

Tom
Tom on 14 Jun 2012
Vincent I
Vincent I on 14 Jun 2012
I have already looked at this article and unfortunately it doesnt work for what i want to do...
in the listbox with the names i can either add or delete the names.
the html method would not work for me
any other ideas? thank you
  1 Comment
Dr. Seis
Dr. Seis on 14 Jun 2012
What you are generally describing above should work with HTML... can you post a few pictures of what you envision? Or can you post the cell-string you are using to apply to the listbox... there might be a formatting issue that is preventing it from working.

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Vincent I
Vincent I on 18 Jun 2012
Walter, i'm not sure what do you mean or what to do with this line or where to add it. By name do you mean string name or listbox name?
Don't add the name directly: add the HTML-ized version of the name.
htmlname = sprintf('<HTML><BODY bgcolor="%s">%s', 'red', ThisEntryName);
  1 Comment
Jan
Jan on 18 Jun 2012
@Vincent: You wrote "I have a list of names". Then just add the HTML stuff to one of the names to get it colored.

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Vincent I
Vincent I on 18 Jun 2012
What i ended up doing is this:
contents = cellstr(get(handles.Names_Listbox,'String'));
NewText = contents{get(handles.Names_Listbox,'Value')};
NewColor = sprintf('<HTML><BODY bgcolor="%s">%s', 'green', NewText);
set(handles.Names_Listbox,'Value',[])
set(handles.Names_Listbox, 'String', cat(1, get(handles.Names_Listbox,'String'), NewColor))
it works great THANK YOU. however, is there a way to move the new colored text to either the top of the list or to stay in the same place that it was initially?
Walter, I tried to follow your exemple in the callback but for some reason didnt do anything for me.
Thank you
  5 Comments
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Vincent I
Vincent I on 18 Jun 2012
one other thing...
How can I change the text color of the colored listbox? thank you

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Vincent I
Vincent I on 18 Jun 2012
NVM
NewColor = sprintf('<HTML><BODY bgcolor="green" text="white">%s', NewText);
THANK YOU VERY MUCH for all your help...
Vincent I
Vincent I on 18 Jun 2012
is there a way to move the new colored text to the top of the listbox?
  1 Comment
Walter Roberson
Walter Roberson on 18 Jun 2012
namestr(validx) = []; %delete it from where it was
namestr = [ {newstr}; namestr ];

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