Question

Hye all.

I have a gui program. My question is how can i make my program started with user insert his name first. For example: when the user double click on my program, then there will be a popup message ask the user his name. After the user insert his name, then only the program will run. Can anyone help me on this?

Answer 1

You can use the following code to do what you want, just put it at the beginning of the file. This will ask for a name as woodchips suggests, when it is empty or cancel is clicked, the dialog will reappear until a non-empty name is given.

%% user authentication
user = '';
while isempty(user)
    user = inputdlg('Please enter your user name:',...
                    'User name',1,{''});
    if isempty(user)
        user = '';
    else
        user = deblank(user{1});   
    end;
end

%% real program code below

However, if all you need is the user name (i.e. account name) of your user, you can do this automatically without any user intervention:

if ispc
    user = getenv('UserName');
else 
    user = getenv('USER');
end;

In Unix/Linux and probably Mac you should be able to probe this a little more by using the finger program (when present on your system). Take a look at the manpage of finger and the matlab command system for more information.