How can I distinguish TDateTime properties from Double properties with RTTI?

Question

Using the RTTI system in Delphi 2010, is there any way to find out if a property is a TDateTime? It\'s currently treating it as a double whenever I call back asVariant and also

Answer 1

Key point here while defining type is the type directive. These two definitions are different:

Type
  TDateTime = Double; // here p.PropertyType.Name returns Double

but

Type
  TDateTime = type Double; // here p.PropertyType.Name returns TDateTime

or 

Type
  u8 = type Byte; // here p.PropertyType.Name returns u8

but

Type
  u8 = Byte; // here p.PropertyType.Name returns Byte !