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#define INCL_GPITRANSFORMS
 
BOOL GpiQueryViewingTransformMatrix(hps, cElements, pmatlf)
HPS hps;             /* presentation-space handle                      */
LONG cElements;      /* number of elements                             */
PMATRIXLF pmatlf;    /* address of structure for transformation matrix */
 
The GpiQueryViewingTransformMatrix function retrieves the current
viewing-transformation matrix.
 
Parameter  Description
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hps        Identifies the presentation space.
 
cElements  Specifies the number of elements to retrieve. It must be an
           integer in the range 0 through 9.
 
pmatlf     Points to the MATRIXLF structure that receives the elements of
           the viewing-transformation matrix.
 
Return Value
 
The return value is GPI_OK if the function is successful or GPI_ERROR if an
error occurred.
 
Errors
 
Use the WinGetLastError function to retrieve the error value, which may be
the following:
 
     PMERR_INV_HPS
     PMERR_INV_LENGTH_OR_COUNT
     PMERR_INV_MICROPS_FUNCTION
     PMERR_PS_BUSY
 
See Also
 
GpiSetViewingTransformMatrix, WinGetLastError, MATRIXLF
 
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