GUI listbox

I try to get selected value(string) from listbox in MATLAB.

Is this code OK?? Here is my code:

   mousePos = java.awt.Point(jEventData.getX, jEventData.getY);
   clickedIndex = jListbox.locationToIndex(mousePos) + 1;
   listValues = get(hListbox,'string');
   clickedValue = listValues{clickedIndex};
   msgbox(clickedValue);

How to use JAVA in matlab we have in java jList.getSelectedIndex();

[Robert Cumming]

Is there any reason why you are not using the matlab commands set and get?

[Aldin]

Java is easier than MATLAB in JAVA we have method:

jList.getSelectedIndex(); jList.getSelectedValeu();

but in MATLAB we have not

Answer 1

[Walter Roberson]

strings = get(hObject, 'string');
curval = get(hObject, 'value');
if iscell(strings)
  curstring = strings{curval};
else
  curstring = strings(curval, :);  %char array
end

Whether the string parameter is a cell array of strings, or a char array, depends on exactly how the listbox was initialized. If it was initialized to a single string that did not have any '|' characters, or initialized to a char array, then a char array will be the result, but if it was initialized to a cell array of strings, or to a single string that had on or more '|' characters, then a cell array will be the result.

[Aldin]

Can somebody tell if there a function such as in JAVA jList.getSelectedValue() or JList.getSelectedIndex(). Because i'm beginner in MATLAB. I'm JAVA programmer.

[Robert Cumming]

There is no single command to get the value - Walter has given you the lines you need to get the current string.

You can put these in your own sub function to have a one-liner

[Walter Roberson]

getSelectedIndex = @(obj) get(obj, 'Value');

getSelectedValue = @(obj) subsref(get(obj, 'String'), struct('Type','{}', 'subs', get(obj, 'Value')));

[Aldin]

Is this possible with uitable????

[Walter Roberson]

Yes, see my response to your newer question on this topic.

Answer 2

[Sean de Wolski]

No reason to access java directly. Use get() with the handle to the listbox to recieve the value property. E.g:

figure;  %new fig
h = uicontrol('units','norm','style','listbox',...
  'string',{'hello';'world';'eww monday'},'position',[.2 .2 .4 .4]); %a listbox

Select 'world'.

Now at the command line:

get(h,'value')

Addendum:

So:

figure;
names = {'Aldin';'Sean';'John'};
h = uicontrol('units','norm','style','listbox',...
  'string',names,'position',[.2 .2 .4 .4]);
h(2) = uicontrol('style','push','callback',@(src,evt)disp(names{get(h(1),'value')}));

Select my name then push the button

[Aldin]

If i have a listbox with name:

Example:

Aldin

Sean

Jhon

and i want to click on Sean (mark wtih blue color) and than click

a button. and when i click button i must to get your name.

[Aldin]

Yes but what is if i don't know your index "2". Always when i click on the listbox i must know the name but what if i will to get the index of your name in this example it is "2"

[Sean de Wolski]

simple. I did it in both examples above. How did I extract the name from the list of names? What was the result of the first example when you selected an item and then got it's value as I did?

[Aldin]

Sean, please Can you make for me a gui application with listbox in MATLAB and when i selected any name on listbox to get the value or index of the name. You can send me your GUI application on [e-mail]. Please answer if you will

[Aldin]

It's confused for me

[Aldin]

I'm beginner in MATLAB