Difference between revisions of "GreGetArcParameters"

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(Created page with "GreGetArcParameters stores the current arc parameters in the buffer addressed by pArcParms. This function can be hooked by the presentation driver. ;Simulation support: Th...")
 
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Latest revision as of 03:01, 16 January 2020

GreGetArcParameters stores the current arc parameters in the buffer addressed by pArcParms.

This function can be hooked by the presentation driver.

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

Syntax

GreGetArcParameters(hdc, pArcParms, pInstance, lFunction);

Parameters

hdc (HDC) - input
Device context handle.
pArcParms (PARCPARAMS) - input
Pointer to ARCPARAMS structure.
pInstance (PVOID) - input
Pointer to instance data.
lFunction (ULONG) - input
High-order WORD=flags; low-order WORD=NGreGetArcParameters.

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

#define INCL_GRE_ARCS
#include <os2.h>

HDC           hdc;        /*  Device context handle. */
PARCPARAMS    pArcParms;  /*  Pointer to ARCPARAMS structure. */
PVOID         pInstance;  /*  Pointer to instance data. */
ULONG         lFunction;  /*  High-order WORD=flags; low-order WORD=NGreGetArcParameters. */
BOOL          fSuccess;   /*  Return codes. */

fSuccess = GreGetArcParameters(hdc, pArcParms,
             pInstance, lFunction);