AfterColEdit () event - Visual Basic 6 and Apex True DBGrid Pro 6

Question

in a VB 6 application, using True DBGrid 6:

I type a value in the id column;

When I change the column, I do a search in the database to bring the description of that id. In the AfterColEdit () event;

On my machine and some others it works. However, on other machines, this AfterColEdit event is not triggered. I checked on these machines, and the OCX tdbg6.ocx is the same as my machine.

Any ideas why the event is not triggered on some machines?

Thanks