IsPublishedProp

Check whether a published property exists.

Declaration

Source position: typinfo.pp line 881

  function IsPublishedProp(Instance: TObject; const PropName: string)
                           : Boolean;
  function IsPublishedProp(AClass: TClass; const PropName: string)
                           : Boolean;

Description

IsPublishedProp returns true if a class has a published property with name PropName. The class can be specified in one of two ways:

AClass

A class pointer to the class.

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

Name	Description
IsStoredProp	Check whether a property is stored.
PropIsType	Check the type of a published property.

Example

program example10;
{ This program demonstrates the IsPublishedProp function }
{$mode objfpc}
uses rttiobj,typinfo;
Var
  O : TMyTestObject;
  PI : PPropInfo;
begin
  O:=TMyTestObject.Create;
  Writeln('Property tests    : ');
  Write('IsPublishedProp(O,BooleanField)     : ');
  Writeln(IsPublishedProp(O,'BooleanField'));
  Write('IsPublishedProp(Class,BooleanField) : ');
  Writeln(IsPublishedProp(O.ClassType,'BooleanField'));
  Write('IsPublishedProp(O,SomeField)        : ');
  Writeln(IsPublishedProp(O,'SomeField'));
  Write('IsPublishedProp(Class,SomeField)    : ');
  Writeln(IsPublishedProp(O.ClassType,'SomeField'));
  O.Free;
end.