Events

Functions
void	CVCError (ErrorCode ErrorCode, BSTR ErrorString, boolean *Continue)
	This event is fired if an error occurs in the Digital I/O Control. More...
void	ImageUpdated ()
	Generated when the image object has changed.
void	Listener (__int3264 Listener, long Port, State Value)
	This event is fired when the monitoring listener thread, which was started with BitListenerStart or DWORDListenerStart, detects the event defined in BitListenerCreate or DWORDListenerCreate respectively. More...
void	Toggler (__int3264 Toggler, long Port, long Value)
	This event is fired when a bit toggle, invoked with BitTogglerStart, has completed. More...

Detailed Description

Function Documentation

CVCError()

void CVCError	(	ErrorCode	ErrorCode,
		BSTR	ErrorString,
		boolean *	Continue
	)

This event is fired if an error occurs in the Digital I/O Control.

Attention

Please include the appropriate header file for your compiler (cvcerror.*).

Parameters

[in]	ErrorCode	A unique number describing the error. The following error codes have been defined: 1 CVC_E_ERROR   This error cannot be described more precisely. 11 CVC_E_PROPERTYREAD   A property could not be read. 12 CVC_E_PROPERTYWRITE   A property could not be written. 13 CVC_E_INVALIDPORT   An invalid port was selected. 14 CVC_E_PORTREAD   A port could not be read. 15 CVC_E_PORTWRITE   A port could not be written. 16 CVC_E_NOIMAGE   No image at all. 17 CVC_E_NOINTERFACE   No interface available.
[in]	ErrorString	Specifies the error text of the output.
[in]	Continue	This specifies whether execution should continue despite the error. The user can overwrite the value in order to change the default action. The default value depends on the function that caused the error. TRUE specifies that a messate box will appear to inform the user of the error. FALSE means that it is possible to perform custom error handling, e.g. use a self-defined message-box.

Listener()

void Listener	(	__int3264	Listener,
		long	Port,
		State	Value
	)

This event is fired when the monitoring listener thread, which was started with BitListenerStart or DWORDListenerStart, detects the event defined in BitListenerCreate or DWORDListenerCreate respectively.

Parameters

[in]	Listener	Handle of the BitListener or DWORDListener object belonging to this event.
[in]	Port	Monitored port.
[in]	Value	Value of the port when the event is fired.

Related Topics:

BitListenerCreate, DWORDListenerCreate

Examples:

Delphi - Delphi Digital I/O Example
Visual Basic - VB Digital I/O Example
Visual C++ - VC Digital I/O Example

Toggler()

void Toggler	(	__int3264	Toggler,
		long	Port,
		long	Value
	)

This event is fired when a bit toggle, invoked with BitTogglerStart, has completed.

Parameters

[in]	Toggler	Handle of the BitToggler object belonging to this event.
[in]	Port	Toggled port.
[in]	Value	Value of the toggled port after the toggle is complete.

Examples:

Delphi - Delphi Digital I/O Example
Visual Basic - VB Digital I/O Example
Visual C++ - VC Digital I/O Example