procedure TForm1.ListBox1MouseMove(Sender: TObject; Shift: TShiftState; X,
Y: Integer);
var
A:Integer;
begin
A:=ListBox1.ItematPos(Point(X,y),True);
IF A>=0 then
Begin
ListBox1.Hint:=ListBox1.Items[A];
Application.ActivateHint(Point(X,Y)); //important
End;
end;
好象在哪里见过这个问题。