[Winpcap-users] While testing Gianlucas winpcap3.1 [prerelease]...

[Gianluca Varenni]

----- Original Message ----- 
From: "Marc Wetzel" <mwse at gmx.de>
To: <winpcap-users at winpcap.org>
Sent: Monday, August 01, 2005 11:28 PM
Subject: Re: [Winpcap-users] While testing Gianlucas winpcap3.1 
[prerelease]...


> Gianluca,
>
> the following code is copied out of the Delphi headerfile defining the 
> constants
> for CoInitializeEx:
> const
>  // flags passed as the coInit parameter to CoInitializeEx.
>  {$EXTERNALSYM COINIT_MULTITHREADED}
>  COINIT_MULTITHREADED      = 0;      // OLE calls objects on any thread.
>  {$EXTERNALSYM COINIT_APARTMENTTHREADED}
>  COINIT_APARTMENTTHREADED  = 2;      // Apartment model
>  {$EXTERNALSYM COINIT_DISABLE_OLE1DDE}
>  COINIT_DISABLE_OLE1DDE    = 4;      // Dont use DDE for Ole1 support.
>  {$EXTERNALSYM COINIT_SPEED_OVER_MEMORY}
>  COINIT_SPEED_OVER_MEMORY  = 8;      // Trade memory for speed.
>
> as you see, 0 has the meaning of COINIT_MULTITHREADED
> You said you initialize also to NULL?

No. I said that WinPcap uses CoInitialize(NULL) (note the lack of the 
trailing "Ex" in the function name), which corresponds to 
CoInitializeEx(NULL, COINIT_APARTMENTTHREADED).

Have a nice day
GV



> Maybe we both are doing the same?
>
> Regards
> /Marc
>
> Gianluca Varenni wrote:
>
>>
>> ----- Original Message ----- From: "Marc Wetzel" <mwse at gmx.de>
>> To: <winpcap-users at winpcap.org>
>> Sent: Monday, August 01, 2005 12:43 PM
>> Subject: Re: [Winpcap-users] While testing Gianlucas winpcap3.1 
>> [prerelease]...
>>
>>
>>>
>>>>>
>>>>> But you might remember, that I had trouble using winpcap3.1.b4/WAN 
>>>>> devices with Delphi,
>>>>> because of some kind of COM initialization problems.
>>>>> It only worked if I do a CoInitializeEx(NIL, COINIT_MULTITHREADED) at 
>>>>> the very start of the code.
>>>>
>>>>
>>>>
>>>> I know. This is one of the biggest headaches I had with WinPcap and 
>>>> NdisWan.
>>>>
>>> It really really only works if I set it to COINIT_MULTITHREADED (not the 
>>> other way around).
>>
>>
>> Uhm, are you using Windows XP? If you are using the test dlls on my web 
>> pages (i.e. the latest build of the dlls, in practice) every attempt to 
>> open/list the wan adapters fails if COM has been initialized as 
>> COINIT_MULTITHREADED *on the same thread*.
>>
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