C# Constants:

public const uint GGO_METRICS      = 0;
public const uint GGO_BITMAP       = 1;
public const uint GGO_NATIVE       = 2;
public const uint GGO_BEZIER       = 3;
public const uint GGO_GRAY2_BITMAP = 4;
public const uint GGO_GRAY4_BITMAP = 5;
public const uint GGO_GRAY8_BITMAP = 6;
public const uint GGO_GLYPH_INDEX  = 0x80;
public const uint GGO_UNHINTED     = 0x100;

VB Constants:

Public Const GGO_METRICS      As Integer = 0;
Public Const GGO_BITMAP       As Integer = 1;
Public Const GGO_NATIVE       As Integer = 2;
Public Const GGO_BEZIER       As Integer = 3;
Public Const GGO_GRAY2_BITMAP As Integer = 4;
Public Const GGO_GRAY4_BITMAP As Integer = 5;
Public Const GGO_GRAY8_BITMAP As Integer = 6;
Public Const GGO_GLYPH_INDEX  As Integer = &H80;
Public Const GGO_UNHINTED     As Integer = &H100;

Notes:

None.