What event of either the grid or the query can I use to get the information,
that the user has selected something in the grid (by selection I mean, that
the whole row changes its color). OnMultiSelect of the query ony fires when
more than one row has been selected, OnRowSelectedChanged only fires when
the selection of the active row has changes.
What I want to achieve is to get some event to either enable or disable a
button which is only supposed to work with selected rows, maybe there is
another way to do that.

Florian