Mattias Gaertner wrote 12 lines
My ISP is currently on a blacklist, so I can't send a mail to the FPC list.
Can someone ask on the fpc list for me:
Why has Delphi 7:
IUnknown = IInterface;
and FPC
IInterface = IUnknown;
?
Vincent
Mailing lists / fpc-devel / 2006-01
Re: IInterface IUnknown
5 messages · 4 people · –
- Vincent Snijders 2
- dannym 1
- Florian Klaempfl 1
- Mattias Gaertner 1
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Vincent Snijders wrote 16 lines
Mattias Gaertner wrote:
> My ISP is currently on a blacklist, so I can't send a mail to the FPC
> list.
> Can someone ask on the fpc list for me:
>
> Why has Delphi 7:
>
> IUnknown = IInterface;
>
> and FPC
>
> IInterface = IUnknown;
>
> ?
History.
Hi,
Florian Klaempfl wrote 20 lines
Vincent Snijders wrote:
> Mattias Gaertner wrote:
>
>> My ISP is currently on a blacklist, so I can't send a mail to the FPC
>> list.
>> Can someone ask on the fpc list for me:
>>
>> Why has Delphi 7:
>>
>> IUnknown = IInterface;
>>
>> and FPC
>>
>> IInterface = IUnknown;
>>
>> ?
>
History.
How on earth did he even notice that it is so ? I'm curious, does it affect anything?
cheers,
Danny
dannym wrote 24 lines
Hi,
Am Freitag, den 06.01.2006, 21:29 +0100 schrieb Florian Klaempfl:
>Vincent Snijders wrote:
>
>
>>Mattias Gaertner wrote:
>>>Why has Delphi 7:
>>>
>>>IUnknown = IInterface;
>>>
>>>and FPC
>>>
>>>IInterface = IUnknown;
>>>
>>>?
>>
>History.
How on earth did he even notice that it is so ? I'm curious, does it
affect anything?
http://www.lazarus.freepascal.org/mantis/view.php?id=1575
Vincent
Show quoted text 27 lines
dannym wrote:
> Hi,
>
> Am Freitag, den 06.01.2006, 21:29 +0100 schrieb Florian Klaempfl:
>
>>Vincent Snijders wrote:
>>
>>
>>>Mattias Gaertner wrote:
>>>>Why has Delphi 7:
>>>>
>>>>IUnknown = IInterface;
>>>>
>>>>and FPC
>>>>
>>>>IInterface = IUnknown;
>>>>
>>>>?
>>>
>>History.
>
>
> How on earth did he even notice that it is so ? I'm curious, does it
> affect anything?
>
http://www.lazarus.freepascal.org/mantis/view.php?id=1575
To explain it:
AFAIK every interface under Delphi derives from IInterface, just like every class derives from TObject.
As IUnknown does not derive from IInterface under FPC I was wondering if the above is a myth, and/or FPC is more flexible here.
Mattias