Change Color of each individual String in a Listbox ?

34 vues (au cours des 30 derniers jours)
Max Müller
Max Müller le 1 Sep 2014
Commenté : Adam le 1 Nov 2019
Hey Guys,
I want to give each Word in my List box an specific color. My mentor said: its not possible. Now I ask here: is it possible to chose the Color of Listbox text with the RGB system ?

Réponse acceptée

Adam
Adam le 2 Sep 2014
Modifié(e) : Adam le 2 Sep 2014
Data(1).name = 'red';
Data(1).Color = [255 0 0];
Data(2).name = 'green';
Data(2).Color = [0 255 0];
Data(3).name = 'blue';
Data(3).Color = [0 0 255];
pre = '<HTML><FONT color="';
post = '</FONT></HTML>';
listboxStr = cell(numel( Data ),1);
for i = 1:numel( Data )
str = [pre rgb2Hex( Data(i).Color ) '">' Data(i).name post];
listboxStr{i} = str;
end
figure; hListBox = uicontrol('Style','list', 'Position', [20 20 100 100], 'String', listboxStr );
That should give you an example of what you want with the following function defined based on Guillame's input above :
function hexStr = rgb2Hex( rgbColour )
hexStr = reshape( dec2hex( rgbColour, 2 )',1, 6);
Obviously if you have a pre-existing listbox from Guide you can just do the usual:
set( handles.listbox1, 'String', listboxStr )
instead of creating a new listbox.
  9 commentaires
Max Müller
Max Müller le 3 Sep 2014
Thanks, so much guys :D
Guillaume
Guillaume le 3 Sep 2014
The colours and names are embedded in the strings, so you could parse them:
liststrings = get(hlistbox, 'string');
colnames = regexp(liststrings, 'color="(.*)">(.*)</FONT', 'tokens', 'once');
data = cell2struct(reshape([colnames{:}], 2, []), {'color', 'name'});

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Plus de réponses (4)

Adam
Adam le 1 Sep 2014
Slightly modified example of code Yair Altman posted many years ago:
figure; uicontrol('Style','list', 'String', ...
{'<HTML><FONT color="red">Red</FONT></HTML>', ...
'<HTML><FONT color="green">Green</FONT></HTML>', ...
'<HTML><FONT color="blue">Blue</FONT></HTML>'} );
  7 commentaires
Keqin Xu
Keqin Xu le 31 Oct 2019
Trouble is, when there are "<" in the string, the "<" are all missing in the listbox!
Any ideas to fix it? Thanks!

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Max Müller
Max Müller le 1 Sep 2014
but i very new to programing..... can u pls explain me, how I cant set the ListboxInput and color each Word with a special Color (RGB)
  4 commentaires
Adam
Adam le 1 Sep 2014
dec2hex( [r g b] )
should help convert between the two, although you have to scoop up the 3 rows of the result into a single string to put into the html string.
Guillaume
Guillaume le 2 Sep 2014
That would be:
reshape(dec2hex([r g b], 2)',1, 6)

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Max Müller
Max Müller le 2 Sep 2014
it sucks
  1 commentaire
Image Analyst
Image Analyst le 2 Sep 2014
Max, this is not an official "Answer" to your original question. If anything, it should have been a Comment to some other response.

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Max Müller
Max Müller le 2 Sep 2014
I just need an interactive way to show some text with a unique color and give this thing an on click callback.
  2 commentaires
Adam
Adam le 2 Sep 2014
Please don't keep adding new questions as answers, it is confusing.
You can define the colour of independent static text objects easily enough (or indeed any independent objects like that if they are predefined).
If you want to have different coloured backgrounds or text in a listbox or uitable or similar though then I'm not aware of any alternative to using html and/or the underlying java UI programming as discussed in previous answers.
If you can explain which element of the suggested solution you are having a problem with we can assist further on that.
Max Müller
Max Müller le 2 Sep 2014
Imagine i have a structure called Data.
Data.name
Data.Color
are its Input. Now I want to write the names into a Listbox and give the String the Color form Data.Color.

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