You can use UNBINDEVENTS( ) to unbind, or detach, an event that was originally bound to a Visual FoxPro object using BINDEVENT( ). To detach events from Component Object Model (COM) objects, use the EVENTHANDLER( ) function. There are three versions of the syntax.

UNBINDEVENTS(oEventSource, cEvent, oEventHandler, cDelegate)

UNBINDEVENTS(oEventObject)

UNBINDEVENTS(hWnd [, nMessage])

Parameters

oEventSource

Specifies the event source, which must be a valid Visual FoxPro object.

oEventObject

Specifies an object reference, which can be used as the event source or event handler.

cEvent

Specifies the name of the event, method, or property you want to unbind.

oEventHandler

Specifies the object that is handling the event.

cDelegate

Specifies the delegate method handling the event for oEventHandler.

hWnd

Specifies the integer handle of the window for which events are unbound.

If hWnd is 0, all hWnds are unbound.

If the nMessage parameter isn't included, then all Windows message bindings for the window handle hWnd are unbound.

nMessage

Specifies a valid Windows message (Win Msg) that is unbound. See MSDN (the Microsoft Developer Network) for information about Windows messages.

Return Value

Remarks

Example

The following example shows how to undo a BINDEVENTS( ) call that keeps the Class Browser positioned to the right side of the Visual FoxPro desktop, regardless of how the desktop is resized. UNBINDEVENTS( ) detaches the Resize event of the _SCREEN system variable from the object, oHandler:

	Copy Code
PUBLIC oHandler oHandler=NEWOBJECT("myhandler") DO (_browser) BINDEVENT(_SCREEN,"Resize",oHandler,"myresize") UNBINDEVENTS(_SCREEN,"Resize",oHandler,"myresize") DEFINE CLASS myhandler AS Session PROCEDURE myresize _obrowser.left = _SCREEN.Width - _obrowser.width RETURN ENDDEFINE

See Also