C# Constants:

  public const uint
  GRADIENT_FILL_RECT_H = 0x00000000,
  GRADIENT_FILL_RECT_V = 0x00000001,
  GRADIENT_FILL_TRIANGLE = 0x00000002,
  GRADIENT_FILL_OP_FLAG = 0x000000ff;

VB Constants:

TODO

Notes:

None.