How to check if an application is maximized?

Hey everyone!
I need a help with application, i wanna to my application tells me if let's say Spider Solitaire window is maximized!

I was found one code on internet but i have problem with that! Maybe you can help me.

Public Class Form1

   option Explicit  'ERROR 1
    Private Declare Function GetForegroundWindow Lib "user32" () As Long
    Private Declare Function GetWindowText Lib "user32" Alias "GetWindowTextA" (ByVal hwnd As Long, ByVal lpString As String, ByVal cch As Long) As Long
    Private Declare Function IsZoomed Lib "user32" (ByVal hwnd As Long) As Long

    Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
        Timer1.Interval = 1000
        Timer1.Enabled = True
    End Sub


    Private Sub Timer1_Timer()

        Dim hwnd As Long, r As Long
        Dim sWindowText As String
        hwnd = GetForegroundWindow ' get forground window
        sWindowText = Space$(255) ' get window text
        r = GetWindowText(hwnd, sWindowText, 255)
        sWindowText = Left(sWindowText, r)  ERROR 2
        If InStr(1, sWindowText, " - Microsoft Internet Explorer") Then ' check text for IE string.
            If IsZoomed(hwnd) = 1 Then MsgBox("IE is foreground and maximized!", vbSystemModal) ' if maximized then display msgbox.
        End If
    End Sub
End Class

Error 1:'Option' statements must precede any declarations or 'Imports' statements.

Error 2:'Public Property Left() As Integer' has no parameters and its return type cannot be indexed.