GpCheckAsync

$image\head10.gif$ Operation The condition of the asynchronous function and the return value of the asynchronous function are acquired.

$image\head10.gif$ Format

(VB.NET)

Dim WaitFlag, ErrCode, Ret As Integer

Ret = GpCheckAsync(WaitFlag, ErrCode)

(C)

DWORD WaitFlag, ErrCode, Ret;

Ret = GpCheckAsync(WaitFlag, &ErrCode);

(C#)

uint WaitFlag, ErrCode, Ret;

Ret = gpib.CheckAsync(WaitFlag, out ErrCode);

(Python)

WaitFlag, ErrCode, Ret = ctypes.c_ulong(), ctypes.c_ulong(), ctypes.c_ulong()

Ret.value = GpibPy.GpCheckAsync(WaitFlag, ctypes.byref(ErrCode))

$image\head10.gif$ Mode Master mode/Slave mode

$image\head10.gif$ Parameters

WaitFlag : Setting of wait for asynchronous function

0 : Condition is checkd and returned soon.

Except for 0 : It waits until present time-out time passes when a asynchronous function isn't completed.

ErrCode : (OUT) Error code of asynchronous function.

Ret : Return value

0 :Normal completion

80 : GpIni() hasn't execute

140 : Asynchronous function is executing now

254 : Timeout

(See "Return Values" for details.)

$image\head10.gif$ Notes

1 Completion is checked by this function when the function of the asynchronism is executed.

2 The ErrCode varies according to the asynchronous function. Refer to the return value of the each asynchronous function.