Wrap

This method is use to explicitly convert a value of one data type to another or invoke implicit conversion from one type to another.

Examples

The Example below demonstrates how to wrap tthrough casting a derived interface type to the base type.

Delphi

var
  obaseExc: _Exception;
  argumentExc: _ArgumentException;
begin
  // Create a new derived type.
  argumentExc := CoArgumentException.CreateInstance;

      // Conversion to the base type
  obaseExc := CoException.Wrap(argumentExc);

  // Explicit conversion is required to cast back
  // to derived type. This is done using the same method
  argumentExc := CoArgumentException.Wrap(obaseExc)
end.

The Example below demonstrates how to explicitly convert an integer value to a decimal interface type.

Delphi

var
  oDecimal: _Decimal;
  oInt32: Integer;
begin
  // NB: Create instance of Console Interface Type  
  // To convert integer value to decimal object, you can use the wrap method of the
  // _Decimal interface.
  oInt32 := 45;
  oDecimal := CoDecimal.Wrap(oInt32);
  Console.WriteLine_15('Convert Integer value ''45'' to Decimal value using the Wrap method, '+
                        'the Decimal value is {0}.', oDecimal);
end.