XFORMOBJ_iGetXform function (winddi.h)

The XFORMOBJ_iGetXform function downloads a transform to the driver.

Syntax

ENGAPI ULONG XFORMOBJ_iGetXform(
  XFORMOBJ *pxo,
  XFORML   *pxform
);

Parameters

pxo

Pointer to the XFORMOBJ structure that defines the transform to be downloaded to the driver.

pxform

Pointer to the buffer that is to receive the XFORML 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:

Return code Description
GX_GENERAL
Arbitrary 2 x 2 matrix and offset.
GX_IDENTITY
Identity matrix; no translation offset.
GX_OFFSET
Identity matrix; there is a translation offset.
GX_SCALE
Off-diagonal matrix elements are zero.

Requirements

   
Minimum supported client Available in Windows 2000 and later versions of the Windows operating systems.
Target Platform Universal
Header winddi.h (include Winddi.h)
Library Win32k.lib
DLL Win32k.sys

See also

XFORML

XFORMOBJ

XFORMOBJ_bApplyXform