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This call returns the current status for the mouse device driver event queue.
Syntax
MouGetNumQueEl (QueDataRecord, DeviceHandle)
Parameters
;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.
Return Code
;rc (USHORT) - return:Return code descriptions are: * 0 NO_ERROR * 385 ERROR_MOUSE_NO_DEVICE * 466 ERROR_MOU_DETACHED * 501 ERROR_MOUSE_NO_CONSOLE * 505 ERROR_MOU_EXTENDED_SG
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.
Bindings
C
<PRE> 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 ueDataRecord; /* Ptr to 2-word structure */ HMOU DeviceHandle; /* Mouse device handle */
USHORT rc; /* return code */ </PRE>
MASM
<PRE> 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 </PRE>