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https://gitlab.com/freepascal.org/fpc/source.git
synced 2025-04-20 12:09:24 +02:00
46 lines
796 B
ObjectPascal
46 lines
796 B
ObjectPascal
{ %SKIPTARGET=go32v2 }
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{ %OPT=-gh }
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{$ifdef fpc}
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{$mode objfpc}
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{$endif fpc}
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uses
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classes;
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type
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to1 = class(TObject,IInterface)
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fi : TInterfacedObject;
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property i : TInterfacedObject read fi implements IInterface;
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end;
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var
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o1 : to1;
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i1,i2 : IInterface;
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begin
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o1:=to1.create;
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o1.fi:=TInterfacedObject.Create;
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writeln('o1 and o1.fi created');
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i1:=o1;
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i1.QueryInterface(IInterface,i2);
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writeln('i2 queried the first time');
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if i2=nil then
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halt(1);
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writeln('setting o1.fi to nil');
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o1.fi:=nil;
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{
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writeln('o1.fi niled');
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i1.QueryInterface(IInterface,i2);
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writeln('i2 queried the second time');
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if i2=nil then
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halt(1);
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}
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o1.free;
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{
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writeln('o1 freed');
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i1.QueryInterface(IInterface,i2);
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if i2=nil then
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halt(1);
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}
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writeln('ok');
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end.
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