AioGetAiEvent

Function

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

Format

Ret = AioGetAiEvent ( Id , hWnd , AiEvent )

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 the Window handle.
If the handle doesn't need to be retrieved, specify NULL.

AiEvent [ 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.
AiEvent 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 AD conversion start	Yes	Yes	AIE_START	00000002H
Event that repeat end	Yes	Yes	AIE_RPTEND	00000010H
Event that device operation end	Yes	Yes	AIE_END	00000020H
Event that the specified number of data are stored	Yes	No	AIE_DATA_NUM	00000080H
Event that the specified number of data are transferred	No	Yes	AIE_DATA_TSF	00000100H
Event that overflow	Yes	Yes	AIE_OFERR	00010000H
Event that sampling clock period error	Yes	Yes	AIE_SCERR	00020000H
Event that AD conversion error	Yes	Yes	AIE_ADERR	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.
11390	Pointer to AiEvent 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 input 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, AiEvent = 0

Remarks

This function cannot be used on devices without the analog input function.

Example

Retrieves the event factor of the message notification.

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