GreGetModelXform

GreGetModelXform queries the current model transform matrix. On completion, paXformData is an array of two-dimensional values defining the current model transform matrix.

This function can be hooked by the presentation driver.


 * Simulation support: This function is simulated by a handling routine in the graphics engine.

Syntax
GreGetModelXform(hdc, paXformData, pInstance, lFunction);

Parameters

 * hdc (HDC) - input
 * Device context handle.


 * paXformData (PXFORM) - input
 * Pointer to return data.


 * A pointer to return data in which the array of six matrix elements (M11, M12, M21, M22, M41, and M42) are to be stored.


 * pInstance (PVOID) - input
 * Pointer to instance data.


 * lFunction (ULONG) - input
 * High-order WORD=flags; low-order WORD=NGreGetModelXform.

Returns

 * fSuccess (BOOL) - returns
 * Return codes.


 * This function returns BOOLEAN (fSuccess).


 * TRUE Successful
 * FALSE Error


 * Possible Errors Detected:  When an error is detected, the handling routine must call WinSetErrorInfo to post the condition. Error codes for conditions that the handling routine is expected to check include:


 * PMERR_HDC_BUSY
 * PMERR_INV_HDC


 * Refer to the "Error Explanations" section in the Presentation Manager Programming Reference for further explanation.

Sample

 * 1) define INCL_GRE_XFORMS
 * 2) include 

HDC      hdc;          /*  Device context handle. */ PXFORM   paXformData;  /*  Pointer to return data. */ PVOID    pInstance;    /*  Pointer to instance data. */ ULONG    lFunction;    /*  High-order WORD=flags; low-order WORD=NGreGetModelXform. */ BOOL     fSuccess;     /*  Return codes. */

fSuccess = GreGetModelXform(hdc, paXformData,            pInstance, lFunction);