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76 lines
1.7 KiB
ObjectPascal
76 lines
1.7 KiB
ObjectPascal
{ Source provided for Free Pascal Bug Report 2886 }
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{ Submitted by "Mattias Gaertner" on 2004-01-08 }
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{ e-mail: mattias@freepascal.org }
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program WrongRTTIParams;
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{$mode objfpc}{$H+}
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uses
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Classes, SysUtils, TypInfo;
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type
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TAnEvent = procedure(Sender: TObject) of object;
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TMyClass = class(TPersistent)
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private
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FMyEvent: TAnEvent;
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public
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procedure ShowRTTI;
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published
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property MyEvent: TAnEvent read FMyEvent write FMyEvent;
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end;
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{ TMyClass }
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procedure TMyClass.ShowRTTI;
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var
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TypeData: PTypeData;
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ParamCount: Integer;
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Offset: Integer;
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Len: Integer;
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CurParamName: string;
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CurTypeIdentifier: string;
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i: Integer;
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begin
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TypeData:=GetTypeData(GetPropInfo(Self,'MyEvent')^.PropType);
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ParamCount:=TypeData^.ParamCount;
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Offset:=0;
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i:=0;
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// for i:=0 to ParamCount-1 do begin
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// SizeOf(TParamFlags) is 4, but the data is only 1 byte
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Len:=1; // typinfo.pp comment is wrong: SizeOf(TParamFlags)
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inc(Offset,Len);
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// read ParamName
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Len:=ord(TypeData^.ParamList[Offset]);
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SetLength(CurParamName,Len);
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if Len>0 then
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Move(TypeData^.ParamList[Offset+1],CurParamName[1],Len);
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inc(Offset,Len+1);
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// read ParamType
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Len:=ord(TypeData^.ParamList[Offset]);
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SetLength(CurTypeIdentifier,Len);
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if CurTypeIdentifier<>'' then
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Move(TypeData^.ParamList[Offset+1],CurTypeIdentifier[1],Len);
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inc(Offset,Len+1);
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writeln('Param ',i+1,'/',ParamCount,' ',CurParamName,':',CurTypeIdentifier);
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if (CurParamName<>'Sender') or (CurTypeIdentifier<>'TObject') then
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begin
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writeln('ERROR!');
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halt(1);
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end;
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// end;
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end;
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var
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MyClass: TMyClass;
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begin
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MyClass:=TMyClass.Create;
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MyClass.ShowRTTI;
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end.
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