GpiQueryPS

This function returns page parameters for the presentation space.

Syntax

GpiQueryPS(hps, psizlSize)

Parameters

hps (HPS) - input

Presentation-space handle.

psizlSize (PSIZEL) - output

Presentation-page size.

Returns

lOptions (ULONG) - returns

Presentation-space options.

For details, see the GpiCreatePS function.

The individual fields of the presentation-space options can be extracted by ANDing the returned value with the appropriate constant.

The PS_ASSOCIATE field of flOptions (see GpiCreatePS) should not be used on this function. The value of this field is not necessarily the same value that is specified when the presentation space is created.

PS_UNITS : Presentation-space size units

PS_FORMAT : Presentation-space coordinate format

PS_TYPE : Presentation-space type

PS_MODE : Presentation-space mode.

Errors

Possible returns from WinGetLastError

PMERR_INV_HPS (0x207F) :An invalid presentation-space handle was specified.

PMERR_PS_BUSY (0x20F4) :An attempt was made to access the presentation space from more than one thread simultaneously.

Example Code

In this example we query the presentation space that corresponds to handle hps.

#define INCL_GPICONTROL
#include <os2.h>
HPS hps;
SIZEL sizel;

GpiQueryPS(hps, &sizel);