What do the files in AppPatch do ?

NTDEV
1

Hi guys,

Does anybody know what the files in the %Windows%\AppPath folder do ? I
thought this was an Windows XP specific issue, but I do have such files
on my Win2K box as well.

It seems the DLLs in the AppPatch folder have an entrypoint called
GetHookAPIs… Sounds interesting enough to me :slight_smile:

Best,
Bartjan.

2

This is a purely for Microsoft use only. Its got nothing to do with drivers.
These files are used to provide application compatibility by providing
layers on top of existing WIN32 APIs.

–
Nar Ganapathy
Windows Core OS group
This posting is provided “AS IS” with no warranties, and confers no rights.

“Bartjan Wattel” wrote in message news:xxxxx@ntdev…
>
> Hi guys,
>
> Does anybody know what the files in the %Windows%\AppPath folder do ? I
> thought this was an Windows XP specific issue, but I do have such files
> on my Win2K box as well.
>
> It seems the DLLs in the AppPatch folder have an entrypoint called
> GetHookAPIs… Sounds interesting enough to me :slight_smile:
>
> Best,
> Bartjan.
>
>
>
>
>

3

Does that mean that the DLL in AppPatch have a method of intercepting
and changing APIs ? If so, do you have any ideas about what exact
interception method is used ?

Best,
Bartjan

-----Original Message-----
From: xxxxx@lists.osr.com
[mailto:xxxxx@lists.osr.com] On Behalf Of Nar Ganapathy[MS]
Sent: vrijdag 25 oktober 2002 17:41
To: NT Developers Interest List
Subject: [ntdev] Re: What do the files in AppPatch do ?

This is a purely for Microsoft use only. Its got nothing to
do with drivers. These files are used to provide application
compatibility by providing layers on top of existing WIN32 APIs.

–
Nar Ganapathy
Windows Core OS group
This posting is provided “AS IS” with no warranties, and
confers no rights.

“Bartjan Wattel” wrote in message
> news:xxxxx@ntdev…
> >
> > Hi guys,
> >
> > Does anybody know what
> the files in the %Windows%\AppPath folder do ?
> > I thought this was an Windows XP specific issue, but I do have such
> > files on my Win2K box as well.
> >
> > It seems the DLLs in the AppPatch folder have an entrypoint called
> > GetHookAPIs… Sounds interesting enough to me :slight_smile:
> >
> > Best,
> > Bartjan.
> >
> >
> >
> >
> >
>
>
>
> —
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>