GpSrqEventEx

$image\BLTLRGSQ.gif$ Boards that Support the Function $image\SETUP.gif$ $image\SANBTN.gif$

$image\head10.gif$ Operation Create event message by receiving SRQ. This function is upgrade from GpSrqEvent. Use with GpPoll and GpSrqOn.

$image\head10.gif$ Format

(VB.NET)

Dim hWnd As Integer

Dim wMsg As Short

Dim SrqOn, Ret As Integer

Ret = GpSrqEventEx(hWnd, wMsg, SrqOn)

(C)

HANDLE hWnd;

WORD wMsg;

DWORD SrqOn, Ret;

Ret = GpSrqEventEx(hWnd, wMsg, SrqOn);

(C#)

int hWnd;

ushort wMsg;

uint SrqOn, Ret;

Ret = gpib.SrqEventEx(hWnd, wMsg, SrqOn);

(Python)

hWnd = ctypes.wintypes.HANDLE()

wMsg = ctypes.c_short()

SrqOn, Ret = ctypes.c_ulong(), ctypes.c_ulong()

Ret.value = GpibPy.GpSrqEventEx(hWnd, wMsg, SrqOn)

$image\head10.gif$ Mode Master mode

$image\head10.gif$ Parameters hWnd : Specify the handle of the receiver of the conversion complete event message

wMsg : Specify the message ID number for the conversion complete event message (user-specified message ID number)

Range : 400H to 7FFFH

SrqO : Specify create event or not

0 : Not create event

1 : Create event

Ret : Return value

0 : Normal completion

80 : GpIni() hasn't execute

140 : Asynchronous function is executing now

200 : Thread creation error

255 : Parameter error

(See "Return Values" for details.)

$image\head10.gif$ Notes 1) This function create event message by receiving SRQ. It is effective until re-execute GpSrqEvent by SrqOn = 0 or execute GpExit. It is necessary for clear slave side's SRQ, to receive next event message. And must execute GpSrqOn at the end of event handling routin. So you want to get next event, must execute GpPoll and GpSrqOn.

2) Other API-TOOLs also use event message ID, which are specified as follows

SIO : 410H to 42FH

GPIB : 430H to 44FH

AIO : 450H to 46FH

DIO : 470H to 48FH

SMC : 490H to 4AFH

CN T : 4B0H to 4CFH

When useing GP-IB, the following are recommended: 430H to 44FH.

3) Refer to the Multimeter example.

4) A probrem of GpSrqEvent is solved in this function. Also not support movement with DOS-Prompt.