How to change the CloseRequestFcn ??

I've tried to modify the CloseRequestFcn and add a questdlg but it doesn't work :/ Here is the code I used: *

function mymenu_CloseRequestFcn(obj, event, handles)

selection = questdlg('Save data?',...
                    '','Yes','No');
 switch selection,
   case 'Yes',
     delete(hObject);
   case 'No'
     return
 end*

Answer 1

[laila bsr]

Hey I found a solution I added :

*set(handlesname,'CloseRequestFcn',@myrequest)* 
and the code is :

function myrequest(obj, event, handles)
selection = questdlg('Save data?',...
                    '','Yes','No');
 switch selection,
   case 'Yes',
     delete(hObject);
   case 'No'
     return
 end*