PropIsType

Check the type of a published property.

Declaration

Source position: typinfo.pp line 1223

Description

PropIsType returns True if the property with name PropName has type TypeKind. It returns False otherwise. The class to be examined can be specified in one of two ways:

AClass

A class pointer.

Instance

An instance of the class.

Errors

No checks are done to ensure Instance or AClass are valid pointers.Specifying an invalid property name in PropName will result in an EPropertyError exception.

See also

Example

program example16;

{ This program demonstrates the PropIsType function }

{$mode objfpc}

uses rttiobj,typinfo;

Var
  O : TMyTestObject;

begin
  O:=TMyTestObject.Create;
  Writeln('Property tests    : ');
  Write('PropIsType(O,BooleanField,tkBool)     : ');
  Writeln(PropIsType(O,'BooleanField',tkBool));
  Write('PropIsType(Class,BooleanField,tkBool) : ');
  Writeln(PropIsType(O.ClassType,'BooleanField',tkBool));
  Write('PropIsType(O,ByteField,tkString)      : ');
  Writeln(PropisType(O,'ByteField',tkString));
  Write('PropIsType(Class,ByteField,tkString)  : ');
  Writeln(PropIsType(O.ClassType,'ByteField',tkString));
  O.Free;
end.