Also, das richtige Ereignis ist OnSetEditText, dazu sagt meine Hilfe folgendes:
Zitat von
Delphi OH:
Occurs when the user edits the value of a cell.
Delphi syntax:
property OnSetEditText: TSetEditEvent;
Description
Write an OnSetEditText event handler to perform any special processing of the text edited by the user in an in-place editor. For example, use the OnSetEditText event to retrieve and store the value of a cell so that it can be displayed in an OnDrawCell event handler. OnSetEditText occurs every time the user changes the text.
The Value parameter is the new value for the cell specified by the ACol and ARow parameters.
OnSetEditText does not occur unless the Options property includes goEditing.
BTW: Das richtige Forum wäre
VCL-Komponenten gewesen, aber egal...
Und zum Abschluss, willkommen in der
DP 
