function change_gain();

h=uicontrol('Style','edit','String','1','CallBack','setgain(gco)');
       % The CallBack passes the handle of the current object (gco) to
       % the setgain function.
      
set(gcf,'MenuBar', 'none','units', 'normalized','position',[0.2894    0.3292    0.2200    0.2200])