MATLAB: Changing color of a string in listbox – MATLAB GUI

guilistboxuitable color

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

Best Answer

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);

Related Solutions

MATLAB: Listbox words not aligning up after using HTML for changing string color

str = sprintf('<HTML><FONT color="blue" face="monospace">%s', str);

You can get the font name of the listbox explicitly:

FontName = get(ListBoxHandle, 'FontName');
str = sprintf('<HTML><FONT color="blue" face="%s">%s', FontName, str);

Btw, using the symbol "line" as name of a variable shadows the built-in function with the same name.

[EDITED] In HTML several neighboring spaces are displayed as one space. Therefore try this to convert the string:

str = strrep(str, ' ', '&ampnbsp;');
str = sprintf('<HTML><FONT color="blue" face="monospace">%s', str);

PS. Creating the string "&ampnbsp;" is not trivial in the forum, because this is displayed as non-braking space. Therefore I had to escape the & by using the HTML special character.

MATLAB: How to make a push button that will change its text when I click on it

In order to cyclically change the text string on the push button, you need to determine what the current 'String' property value is, and set it to the other value.

Below is an example of a push button that switches the push button's String between ''Pause" and ''Resume" :

function Test_Button(hObject, eventdata, handles, varargin)
%Create the GUI
Fig = figure;
% Create the Push button using uicontrol, using callback function push_Callback, initially the text displayed for the button is "Pause"
PushCtrl = uicontrol( Fig,'Style' ,'pushbutton',...
                            'String', 'Pause',...
                            'Position', [20 20 100 60],...
                            'Callback', @push_Callback);
% Create the handles structure
handles = guihandles(Fig);
handles.strings = {'Pause';'Resume'};
% Save the handles structure to the fig file
guidata(Fig, handles);
%%This function checks the current string of push button and changes it.
function varargout = push_Callback(h, eventdata)
% Get the handles structure
handles = guidata(h);
% Get the current string
str = get(h,'String');
% See which string the current string matches with
ind = find(strcmp(str,handles.strings));
% Switch to the other string
if ind == 1
      set(h,'String',handles.strings{2});
else
      set(h,'String',handles.strings{1});
end

Best Answer

Related Solutions

MATLAB: Listbox words not aligning up after using HTML for changing string color

MATLAB: How to make a push button that will change its text when I click on it

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