CntNotifyTimer

Function

Sets the notify for timer. Supports multi-processing.

Format

Ret =CntNotifyTimer ( Id , TimeValue , hWnd )

Parameters

Id [ VB.NET: Short ] [ C, C++: short ] [ C#: short ] [ Python: ctypes.c_short ]
Specify the device ID retrieved from CntInit.

TimeValue [ VB.NET: Integer ] [ C, C++: unsigned long ] [ C#: uint ] [ Python: ctypes.c_ulong ]
Specify the timer value by unit ms.
Allowable setting range:
CNT24-4(PCI)H,CNT24-4D(PCI)H :1<=TimeValue<=200000
Device with sampling function :1<=TimeValue<=6553

hWnd [ VB.NET: IntPtr ] [ C, C++: HWND ] [ C#: IntPtr ] [ Python: ctypes.wintypes.HANDLE ]
Specify the window handle that receives the notify of timer.
The window handle can be retrieved by m_hWnd for VC.
Specify 0 when using callback without using window message.

Return Value

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

Definition	Value	Description
CNT_ERR_SUCCESS	0	Normality completion
CNT_ERR_SYS_RECOVERED_FROM_STANDBY	7	Execute the function CntResetDevice to return from the standby mode.
CNT_ERR_DLL_INVALID_ID	10001	Invalid ID was specified.
CNT_ERR_DLL_CALL_DRIVER	10002	CNT driver can't be called (Failed in the device I/O control).
CNT_ERR_DLL_CREATE_THREAD	10005	Failed in the creation of the thread (Failed in CreateThread).
CNT_ERR_DLL_HWND	10200	Window handle is invalid.
CNT_ERR_SYS_NOT_SUPPORTED	20001	This function can't be used by this device.
CNT_ERR_SYS_TIMER_VALUE	20300	Timer value is out of range.

The others: (See also: Details of Error Code)

Remarks

The following message is posted to the specified window handle when interrupt occurs.

Definition	Value
CNTM_TIMER	1140H

The following information enters wParam and lParam that is the parameter of the message respectively.
LOWORD(wParam)=ID retrieved from CntInit
* HIWORD and LOWORD show the high-word and low-word.

Refer to the sample program of each language for the describing details of message processing.

Interrupt is invalid if CntResetDevice is called.

Example

The timer notify is set by the unit of 100msec.

VB.NET	Dim Ret As Integer Ret = CntNotifyTimer ( Id , 100 , Handle )
C, C++	long Ret; Ret = CntNotifyTimer ( Id , 100 , m_hWnd );
C#	int Ret; Ret = cnt.CntNotifyTimer ( Id , 100 , Handle );
Python	Ret = ctypes.c_long() handle = ctypes.windll.user32.FindWindowW(0, "Interrupt") Ret.value = ccnt.CntNotifyTimer ( Id , 100 , handle )