user interface - Insert a new line in listbox on Matlab GUIDE -

i'm building gui using guide , have listbox want receive several messages after click in send_button every time click on button message shows in first line.

function send_button_callback(hobject, eventdata, handles) % hobject    handle send_button (see gcbo) % eventdata  reserved - defined in future version of matlab % handles    structure handles , user data (see guidata)      % text   dstid = get(handles.dest_id,'string');   msg = get(handles.message_box,'string');    % message_box = editbox    % build message , send   msg = {['< ', dstid, ' >     ', msg]};      % dstid = number   set(handles.message_list, 'string', msg);   % message_list = listbox 

what should in order have like

<3> message 1 <3> message 2 <3> message 3 

i think happens because msg string don't know how insert '\n' or that.

you can cell array of strings containing items of listbox get(handles.message_list,'string'). here's way solve problem.

function send_button_callback(hobject, eventdata, handles) % hobject    handle send_button (see gcbo) % eventdata  reserved - defined in future version of matlab % handles    structure handles , user data (see guidata)    % text dstid = get(handles.dest_id,'string'); msg = get(handles.message_box,'string');    % message_box = editbox  %get lisbox cell array of strings cell_listbox = get(handles.message_list,'string'); %length needed in order append desired message @ end length_cell_listbox = length(cell_listbox);  % build message , send msg = ['< ', dstid, ' >     ', msg];      % dstid = number cell_listbox{length_cell_listbox + 1} = msg; set(handles.message_list, 'string', cell_listbox);   % message_list = listbox 

using same idea can create button deletes last message stored in listbox.