Context Menu Switch Case Function Example

#include <GUIConstantsEx.au3>
#include <ButtonConstants.au3>

    GUICreate("My GUI Context Menu", 300, 200)
    Local $case_0, $case_1, $case_2, $case_3
    Local $contextmenu = GUICtrlCreateContextMenu()

    Local $button = GUICtrlCreateButton("OK", 100, 100, 70, 20)
    Local $buttoncontext = GUICtrlCreateContextMenu($button)
    GUICtrlCreateMenuItem("About button", $buttoncontext)

    Local $newsubmenu = GUICtrlCreateMenu("new", $contextmenu)
    GUICtrlCreateMenuItem("text", $newsubmenu)

    $case_0 = GUICtrlCreateMenuItem("Case 0", $contextmenu)
    $case_1 = GUICtrlCreateMenuItem("Case 1", $contextmenu)
    GUICtrlCreateMenuItem("", $contextmenu) ; separator
                $case_2 = GUICtrlCreateMenuItem("Case 2", $contextmenu)
    $case_3 = GUICtrlCreateMenuItem("Case 3", $contextmenu)

    GUICtrlCreateMenuItem("Info", $contextmenu)

    GUISetState()

While 1
    $nMsg = GUIGetMsg()
    Switch $nMsg
        Case $GUI_EVENT_CLOSE
            Exit
        Case $case_0
            MsgBox(0, "Case 0", "This is Case 0")
        Case $case_1
            MsgBox(0, "Case 1", "This is Case 1")
        Case $case_2
          _Function_case_2()
        Case $case_3
                                                MsgBox(0, "Case 3", "This is Case 3")
    EndSwitch
WEnd

Func _Function_case_2()
     MsgBox(0, "Case 2", "This is Function Case 2")

EndFunc