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    IsPublishedProp

    Check whether a published property exists.

    Declaration

    Source position: typinfo.pp line 1222

    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.