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Option Explicit
Private Const MEM_RELEASE = &H8000
Private Const MEM_COMMIT = &H1000
Private Const PAGE_EXECUTE_READWRITE = &H40
Private Declare Function VirtualAlloc Lib "kernel32" (lpAddress As Any, ByVal dwSize As Long, ByVal flAllocationType As Long, ByVal flProtect As Long) As Long
Private Declare Function VirtualFree Lib "kernel32" (lpAddress As Any, ByVal dwSize As Long, ByVal dwFreeType As Long) As Long

Private Sub Code1()
    Dim Base As Long
    Base = VirtualAlloc(ByVal 0&, 100, MEM_COMMIT, PAGE_EXECUTE_READWRITE)
    If Base Then
        MsgBox Hex(Base)
        MsgBox VirtualFree(ByVal Base, 0, MEM_RELEASE)
        MsgBox Hex(GetLastError)
    End If
End Sub

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