The D3DMATRIXLOAD structure describes the operand data for the D3DOP_MATRIXLOAD opcode in the D3DOPCODE enumerated type.
typedef struct _D3DMATRIXLOAD { 
    D3DMATRIXHANDLE hDestMatrix; 
    D3DMATRIXHANDLE hSrcMatrix; 
} D3DMATRIXLOAD, *LPD3DMATRIXLOAD; 
   Windows NT/2000: Requires Windows NT 4.0 SP3 or later.
  Windows 95/98: Requires Windows 95 or later. Available as a redistributable for Windows 95.
  Header: Declared in d3dtypes.h.