_D3DDECLUSAGE

type _D3DDECLUSAGE = (

  D3DDECLUSAGE_POSITION,

  D3DDECLUSAGE_BLENDWEIGHT,

  D3DDECLUSAGE_BLENDINDICES,

  D3DDECLUSAGE_NORMAL,

  D3DDECLUSAGE_PSIZE,

  D3DDECLUSAGE_TEXCOORD,

  D3DDECLUSAGE_TANGENT,

  D3DDECLUSAGE_BINORMAL,

  D3DDECLUSAGE_TESSFACTOR,

  D3DDECLUSAGE_POSITIONT,

  D3DDECLUSAGE_COLOR,

  D3DDECLUSAGE_FOG,

  D3DDECLUSAGE_DEPTH,

  D3DDECLUSAGE_SAMPLE

);