if i give maximum value to the check box means some function will be done , otherwise nothing will be do, how to do?

i am using MATLAB 8.1 version.i do know about gui.but now i learn that.i am working on image processing concepts.i have 3 function and i have 3 checkbox. if i choose first checkbox first function only running.if i choose second one second function only running.if i choose both 1&2 both are running.this is my concept.how will i call the funtion using checkbox?

please give some idea....

Answer 1

[ES]

say you have function1(), and function2().

Checkbox1CallBack()  
global Firstcallbox_Value;  
Firstcallbox_Value=get(hobject,'Value');
commonCallBack();

Checkbox2CallBack()  
global Secondcallbox_Value;  
Secondcallbox_Value=get(hobject,'Value');
commonCallBack();

commonCallBack()
if Firstcallbox_Value==1 && Secondcallbox_Value==1
   function1()
    function2().
elseif Firstcallbox_Value==1
  function1()
elseif Secondcallbox_Value==1
    function2()
end