isCOBOL Evolve : User Interface : Controls Reference : WINDOW : Styles : System Menu
System Menu
When this style is set, the system menu becomes available. It usually gives access to commands such as minimize, maximize and close.
 
Example - Display a window with system menu
working-storage section.
77 window-handle1 usage handle of window.
...
procedure division.
...
  display floating  window background-low
          size 37.3
          lines 34.2
          line 20
          column 1
          cell width 10
          cell height 10
          label-offset 20
          control font Default-Font
          color 257
          modeless
          system menu
          title-bar
          no wrap
          title "Screen"
          handle window-handle1
          .