<< Click to Display Table of Contents >> Navigation:  Events Generated by the VCL > OnAfterFieldChange

[Interactive Edition and above]

A Field (not a control!) changed its value, because the associated Control was edited by the user or the content of any associated Control was changed by code.
This event is very interesting, because a Field will change its value each time the user makes a change. Evaluating this event means, that your application is informed about every single keystroke or mouse-click, which modifies a Control's content.
This is one of the few events where CloseDoc() may be called while processing the event.
The event is not fired, if you set the value of a Field by code.

OnAfterFieldChange(

Sender: TVPEngine;

Obj: TVPEField

)

Sender

the VPE object that fired the event

Obj

the Field object, which fired the event

Remarks:

If you change the value of a Control by code, the OnAfterControlChange event is not fired. But if the Control is associated with a Field, the event AfterFieldChange is fired.
Vice versa, if you change the value of a Field by code, the AfterFieldChange event is not fired, but any Controls associated with the Field will fire the event OnAfterControlChange.

 

See also:

Interactive Documents