BalloonHint组件，在Delphi2010中提供了，但在Delphi2007中却没有提供。本人从D2010中抠出来，略作修改，使之适应于D2007，希望大家喜欢。-BalloonHint components, in the Delphi2010 provided, but does not provided in the Delphi2007. I pull out from the D2010, slightly modified to adapt them to D2007, I