每次更改TDbGrid的选定位置时会触发什么事件？

I've got a TDbGrid in my project, and I'm trying to have an event go off every time I change the selected row. Any change in row already updates all the data-aware controls linked to the same DataSource, but there are other changes to be made too, that I need an event handler for.I've got a TDbGrid in my project, and I'm tryin