C# Signature:

    [Flags()]
    public enum ChangeDisplaySettingsFlags : uint
    {
        CDS_NONE = 0,
        CDS_UPDATEREGISTRY = 0x00000001,
        CDS_TEST = 0x00000002,
        CDS_FULLSCREEN = 0x00000004,
        CDS_GLOBAL = 0x00000008,
        CDS_SET_PRIMARY = 0x00000010,
        CDS_VIDEOPARAMETERS = 0x00000020,
        CDS_ENABLE_UNSAFE_MODES = 0x00000100,
        CDS_DISABLE_UNSAFE_MODES = 0x00000200,
        CDS_RESET = 0x40000000,
        CDS_RESET_EX = 0x20000000,
        CDS_NORESET = 0x10000000
    }

VB Signature:

<Flags> _

Public Enum ChangeDisplaySettingsFlags As UInteger

    CDS_NONE = 0
    CDS_UPDATEREGISTRY = &H1
    CDS_TEST = &H2
    CDS_FULLSCREEN = &H4
    CDS_GLOBAL = &H8
    CDS_SET_PRIMARY = &H10
    CDS_VIDEOPARAMETERS = &H20
    CDS_ENABLE_UNSAFE_MODES = &H100
    CDS_DISABLE_UNSAFE_MODES = &H200
    CDS_RESET = &H40000000
    CDS_RESET_EX = &H20000000
    CDS_NORESET = &H10000000

End Enum