GetFloatProp

Return value of floating point property

Declaration

Source position: line 0

Description

GetFloatProp returns the value of the float property described by PropInfo or with name Propname for the object Instance. All float types are converted to extended.

Errors

No checking is done whether Instance is non-nil, or whether PropInfo describes a valid float property of Instance. Specifying an invalid property name in PropName will result in an EPropertyError exception.

See also

Example

program example4;

{ This program demonstrates the GetFloatProp function }

{$mode objfpc}

uses rttiobj,typinfo;

Var
  O : TMyTestObject;
  PI : PPropInfo;

begin
  O:=TMyTestObject.Create;
  Writeln('Real property : ');
  PI:=GetPropInfo(O,'RealField');
  Writeln('Value            : ',O.RealField);
  Writeln('Get (name)       : ',GetFloatProp(O,'RealField'));
  Writeln('Get (propinfo)   : ',GetFloatProp(O,PI));
  SetFloatProp(O,'RealField',system.Pi);
  Writeln('Set (name,pi)    : ',O.RealField);
  SetFloatProp(O,PI,exp(1));
  Writeln('Set (propinfo,e) : ',O.RealField);
  Writeln('Extended property : ');
  PI:=GetPropInfo(O,'ExtendedField');
  Writeln('Value            : ',O.ExtendedField);
  Writeln('Get (name)       : ',GetFloatProp(O,'ExtendedField'));
  Writeln('Get (propinfo)   : ',GetFloatProp(O,PI));
  SetFloatProp(O,'ExtendedField',system.Pi);
  Writeln('Set (name,pi)    : ',O.ExtendedField);
  SetFloatProp(O,PI,exp(1));
  Writeln('Set (propinfo,e) : ',O.ExtendedField);
  O.Free;
end.

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