GreGetPickWindow

GreGetPickWindow stores (at the location addressed by pPick) a RECTL structure giving the position and size of the pick window in page-coordinate space.

Simulation support

This function is mandatory for display drivers. For other drivers, it is simulated by a handling routine in the graphics engine.

Syntax

GreGetPickWindow(hdc, pPick, pInstance, lFunction)

Parameters

hdc (HDC) - input

The device context handle.

pPick (PRECTL) - input

A pointer to a pick window.

The pick window is defined as a RECTL structure in page coordinate space.

pInstance (PVOID) - input

A pointer to instance data.

lFunction (ULONG) - input

High-order WORD=flags; low-order WORD=NGreGetPickWindow.

Returns

fSuccess (BOOL) - returns

Return codes.

On completion, the handling routine must return 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_DEV_FUNC_NOT_INSTALLED
• PMERR_INV_HDC

Sample

#define INCL_GRE_PICK
#include <os2.h>

HDC       hdc;        /*  The device context handle. */
PRECTL    pPick;      /*  A pointer to a pick window. */
PVOID     pInstance;  /*  A pointer to instance data. */
ULONG     lFunction;  /*  High-order WORD=flags; low-order WORD=NGreGetPickWindow. */
BOOL      fSuccess;   /*  Return codes. */

fSuccess = GreGetPickWindow(hdc, pPick, pInstance, lFunction);