[Overview][Constants][Types][Classes][Procedures and functions][Index] |
Check whether a published property exists.
Source position: typinfo.pp line 781
function IsPublishedProp( |
Instance: TObject; |
const PropName: string |
):Boolean; |
AClass: TClass; |
const PropName: string |
):Boolean; |
IsPublishedProp returns true if a class has a published property with name PropName. The class can be specified in one of two ways:
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.
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Check whether a property is stored. |
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Check the type of a published property. |
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.