View source for GreQueryNumberSetIds

GreQueryNumberSetIds returns the total number of lcids, such as logical fonts and bit-map IDs, that have been created.

This function is supported by the graphics engine.

== Syntax == 
 GreQueryNumberSetIds(hdc, lRange, pInstance, lFunction)

== Parameters ==
;hdc (HDC) - input : Device context handle.
;lRange (ULONG) - input : Indicates whether GPI, or AVIO lcids, or both are to be returned.
:Valid ranges are:
:LCID_RANGE_GPI GPI
:LCID_RANGE_AVIO AVIO
:LCID_RANGE_BOTH GPI and AVIO
;pInstance (PVOID) - input: Pointer to instance data.
;lFunction (ULONG) - input : High-order WORD=flags; low-order WORD=NGreQueryNumberSetIds.

== Returns ==
;fSuccess (LONG) - returns : Return codes.
This function returns the number of lcids, or it returns GPI_ALTERROR if an error occurs.

Possible Errors Detected: When an error is detected, the graphics engine calls WinSetErrorInfo to post the condition. Reasons for failure of this function include:
* PMERR_HDC_BUSY
* PMERR_INV_HDC
* PMERR_INV_SETID
* PMERR_INV_SETID_TYPE
Refer to the "Error Explanations" section of the ''Presentation Manager Programming Reference'' for further explanation.

== Sample ==
<pre>
#define INCL_GRE_SETID
#include <os2.h>

HDC      hdc;        /*  Device context handle. */
ULONG    lRange;     /*  Indicates whether GPI, or AVIO lcids, or both are to be returned. */
PVOID    pInstance;  /*  Pointer to instance data. */
ULONG    lFunction;  /*  High-order WORD=flags; low-order WORD=NGreQueryNumberSetIds. */
LONG     fSuccess;   /*  Return codes. */

fSuccess = GreQueryNumberSetIds(hdc, lRange, pInstance, lFunction);
</pre>

[[Category:Gre]]