C# Definition:

    [Flags]    
    public enum ClassStyles : uint
    {
        CS_VREDRAW      = 0x0001,
        CS_HREDRAW      = 0x0002,
        CS_DBLCLKS      = 0x0008,
        CS_OWNDC        = 0x0020,
        CS_CLASSDC      = 0x0040,
        CS_PARENTDC     = 0x0080,
        CS_NOCLOSE      = 0x0200,
        CS_SAVEBITS     = 0x0800,
        CS_BYTEALIGNCLIENT  = 0x1000,
        CS_BYTEALIGNWINDOW  = 0x2000,
        CS_GLOBALCLASS      = 0x4000,
        CS_IME          = 0x00010000,
        CS_DROPSHADOW       = 0x00020000
    }

VB Definition:

    Public Enum ClassStyles
        CS_VREDRAW = &H1
        CS_HREDRAW = &H2
        CS_DBLCLKS = &H8
        CS_OWNDC = &H20
        CS_CLASSDC = &H40
        CS_PARENTDC = &H80
        CS_NOCLOSE = &H200
        CS_SAVEBITS = &H800
        CS_BYTEALIGNCLIENT = &H1000
        CS_BYTEALIGNWINDOW = &H2000
        CS_GLOBALCLASS = &H4000
        CS_IME = &H10000
        CS_DROPSHADOW = &H20000
    End Enum

Notes:

None.