ULONG XFORMOBJ_iGetXform(
| IN XFORMOBJ *pxo, | |
| OUT XFORM *pxform | |
| ); |
XFORMOBJ_iGetXform downloads a transform to the driver.
Parameters
pxo
Points to the XFORMOBJ structure that defines the transform to be downloaded to the driver.
pxform
Points to the buffer that is to receive the XFORM structure. This parameter can be null.
Return Value
If an error occurs, the return value is DDI_ERROR. Otherwise, the return value is a complexity hint about the transform object. The value of this transform characterization can be one of the following:
| Value | Meaning |
| GX_IDENTITY | Identity matrix; no translation offset. |
| GX_OFFSET | Identity matrix; there is a translation offset. |
| GX_SCALE | Off-diagonal matrix elements are zero. |
| GX_GENERAL | Arbitrary 2 x 2 matrix and offset. |
See Also