AioGetAoEvent

Function

Retrieves the event factor of the message notification that is related to the analog output.

Format

Ret = AioGetAoEvent ( Id , hWnd , AoEvent )

Parameters

Id [ VB.NET : Short ] [ C, C++ : short ] [ C# : short ] [ Python : ctypes.c_short ]
Specifies the ID retrieved from AioInit function.

hWnd [ VB.NET : IntPtr ] [ C, C++ : HWND * ] [ C# : out IntPtr ] [ Python : ctypes.POINTER(ctypes.wintypes.HANDLE) ]
Specifies the address of the variable that stores Window handle.
If the handle doesn't need to be retrieved, specify NULL.

AoEvent [ VB.NET : Integer ] [ C, C++ : long * ] [ C# : out int ] [ Python : ctypes.POINTER(ctypes.c_long) ]
Specifies the address of the variable that stores the event factor.
AoEvent has the following meanings in bit.

The available event factor is based on whether the device buffer is used or whether the user buffer is used.

Event factor	Using Device buffer	Using User buffer	Macro	Value
Event that DA conversion start	Yes	Yes	AOE_START	00000002H
Event that repeat end	Yes	Yes	AOE_RPTEND	00000010H
Event that device operation end	Yes	Yes	AOE_END	00000020H
Event that the specified number of data are output	Yes	No	AOE_DATA_NUM	00000080H
Event that the specified number of data are transferred	No	Yes	AOE_DATA_TSF	00000100H
Event that generating clock period error	Yes	Yes	AOE_SCERR	00020000H
Event that DA conversion error	Yes	Yes	AOE_DAERR	00040000H

Return value

Ret [ VB.NET : Integer ] [ C, C++ : long ] [ C# : int ] [ Python : ctypes.c_long ]

Return values	Content
0	Normality completion
7	Execute AioResetDevice function because the device has recovered from standby mode
10001	Invalid Id was specified Use the Id retrieved from AioInit to specify the Id in this function.
10002	AIO driver can't be called At first, perform AioInit function.
13290	Pointer to AoEvent is NULL Specify the address of variable to parameter.
20001	This function can't be used by this device
20002	Can not use while by another device works To use this function, analog output operation must be stopped.
20003	Can not use because another process is using the device When another process is using the device, all functions except for those that support multi-process can not be performed.

Initial value

In all devices, AoEvent = 0

Remarks

This function cannot be used on devices without the analog output function.
If the device is in operation, the function cannot be performed.

Example

Retrieves the event factor of the message notification.

VB.NET	Dim Ret As Integer Dim hWnd As IntPtr Dim AoEvent As Integer Ret = AioGetAoEvent ( Id , hWnd , AoEvent )
C, C++	long Ret; HWND hWnd; long AoEvent; Ret = AioGetAoEvent ( Id , &hWnd , &AoEvent );
C#	int Ret; IntPtr hWnd; int AoEvent; Ret = aio.GetAoEvent ( Id , out hWnd , out AoEvent );
Python	Ret = ctypes.c_long() handle = ctypes.windll.user32.FindWindowW(0, "Interrupt") AoEvent = ctypes.c_long() Ret.value = caio.AioGetAoEvent ( Id , ctypes.byref(handle) , ctypes.byref(AoEvent) )