How to close a GUI

[Docfxit 7]

I'd like to find out how to close the window as soon as it's used without having to click on the x in the upper right.

While 1
    $msg = GUIGetMsg()
    Select
        Case $msg = $GUI_EVENT_CLOSE
            ExitLoop
        Case $msg = $Btn_GET
            $a_sel = _GUICtrlEditGetSel ($myedit)
            If ($a_sel == $EC_ERR) Then
                GUICtrlSetData($Status, "Error getting sel positions")
            ElseIf (IsArray($a_sel)) Then
                $NewVendor = StringMid(GUICtrlRead($myedit), $a_Sel[1] + 1, ($a_Sel[2] - $a_Sel[1]) + 1)
                GUICtrlSetData($Status, $NewVendor)
                ReDim $Vendor[UBound($Vendor) + 1]
                ReDim $Account[UBound($Account) + 1]
                $Vendor[Ubound($Vendor) -1] = $NewVendor
                $Account[Ubound($Account) -1] = $AccountSelected
                $sRecordOut = $NewVendor & "," & $AccountSelected
                FileWriteLine($hQBOffSetEntries, $sRecordOut & @CRLF)   
           Else
                GUICtrlSetData($Status, "")
            EndIf
    EndSelect
WEnd

[stampy 0]

guidelete will remove the gui