LVectorBase::Event

#include "lvkrn.h"

virtual L_INT LVectorBase::Event(pEvent)

pointer to a structure

Implements a user-defined event.

Parameter	Description
pEvent	Pointer to a VECTOREVENT structure that describes the event that has occurred inside the vector handle.

Returns

SUCCESS	The function was successful.
< 1	An error occurred. Refer to Return Codes.

Comments

This function provides a means of grouping numerous operations into one event. This function must be called twice. In the first call to this function the Status member of the VECTOREVENT structure must be set to VECTOR_EVENT_STATUS_BEFORE. This allows any callback currently installed to cancel the operation. The return value for this function will be the return value of the callback function.

The second call to this function is made after the operation(s) have been completed. The Status member of the VECTOREVENT structure must be set to VECTOR_EVENT_STATUS_AFTER to notify the vector toolkit that the operation(s) have been completed successfully.

For information on the types of events the vector handle can generate, refer to the VECTOREVENT structure.

Required DLLs and Libraries

LVKRN

For a listing of the exact DLLs and Libraries needed, based on the toolkit version, refer to Files To Be Included With Your Application.

Example

For an example, refer to LVectorBase::VectorEventProcCallBack.

Help Version 19.0.2017.10.27

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Appendix

Functions:	LVectorBase::VectorEventProcCallback
Topics:	Vector Handle Events