Bindings: C, MASM

This call returns the current status for the mouse device driver event queue.

MouGetNumQueEl (QueDataRecord, DeviceHandle)

QueDataRecord (PMOUQUEINFO) - output Address of the mouse queue status structure:

numqelements (USHORT) Current number of event queue elements, in the range 0 <> value <> maxnumqelements.

maxnumqelements (USHORT) Maximum number of queue elements as specified in the QSIZE = NN parameter in DEVICE=MOUSExxx.SYS statement in CONFIG.SYS.

DeviceHandle (HMOU) - input Contains the handle of the mouse device obtained from a previous MouOpen.

rc (USHORT) - return Return code descriptions are:

Remarks

The maxnumqelements returned by this function is established during mouse device driver configuration. See the mouse DEVICE=MOUSExxx.SYS statement in the IBM Operating System/2 Version 1.2 Command Reference for further details.

typedef struct _MOUQUEINFO {   /* mouqi */
  USHORT cEvents;              /* current number of event queue elements */
  USHORT cmaxEvents;           /* MaxNumQueElements value */
} MOUQUEINFO;
 
#define INCL_MOU
 
USHORT  rc = MouGetNumQueEl(QueDataRecord, DeviceHandle);
 
PMOUQUEINFO      QueDataRecord; /* Ptr to 2-word structure */
HMOU             DeviceHandle;  /* Mouse device handle */
 
USHORT           rc;            /* return code */

MOUQUEINFO struc
  mouqi_cEvents    dw  ? ;current number of event queue elements
  mouqi_cmaxEvents dw  ? ;MaxNumQueElements value
MOUQUEINFO ends
 
EXTRN  MouGetNumQueEl:FAR
INCL_MOU            EQU 1
 
PUSH@  OTHER   QueDataRecord  ;Ptr to 2-word structure
PUSH   WORD    DeviceHandle   ;Mouse device handle
CALL   MouGetNumQueEl
 
Returns WORD