How to use DbgPrompt in drivers?

Dear All,

Recently I read the article "Try This -- Interactive Driver Testing" (The NT
Inside, Vol 11). It introduces a minimal driver skeleton. I tried to build
the code, but encountered a compiler error.

The code uses the function "DbgPrompt". But there is no declaration of
DbgPrompt in any *.h files in Win DDK (2600). And there is no information
about this function in DDK's help.

I have noted that the function is exported by ntoskrnl.lib. So I added
"TARGETLIBS=$(DDK_LIB_PATH)\ntoskrnl.lib" in "source" file. But I still need
to know the declaration of the function "DbgPrompt".

Can anyone tell me about this or how to use "DbgPrompt" in drivers.

Thanks in advance.

Don
Thu Apr 21 07:21:15 CDT 2005

There was a bug in the posted code, the correct definition of DebPrompt is:

int DbgPrompt(PCHAR string, PCHAR buf, ULONG bufsize))

Where:

string is a string to be displayed
buf is the buffer to receive the line from WinDBG
bufsize is the size of the buffer

The function returns the number of chatacters read. Note: this should be
used for testing purposes only, the function is undocumented.


--
Don Burn (MVP, Windows DDK)
Windows 2k/XP/2k3 Filesystem and Driver Consulting
Remove StopSpam from the email to reply



"Zhou" <changzhi_zhou@163.com> wrote in message
news:euCzodlRFHA.3544@TK2MSFTNGP12.phx.gbl...
> Dear All,
>
> Recently I read the article "Try This -- Interactive Driver Testing" (The
> NT
> Inside, Vol 11). It introduces a minimal driver skeleton. I tried to build
> the code, but encountered a compiler error.
>
> The code uses the function "DbgPrompt". But there is no declaration of
> DbgPrompt in any *.h files in Win DDK (2600). And there is no information
> about this function in DDK's help.
>
> I have noted that the function is exported by ntoskrnl.lib. So I added
> "TARGETLIBS=$(DDK_LIB_PATH)\ntoskrnl.lib" in "source" file. But I still
> need
> to know the declaration of the function "DbgPrompt".
>
> Can anyone tell me about this or how to use "DbgPrompt" in drivers.
>
> Thanks in advance.
>
>
>

Zhou
Thu Apr 21 08:46:08 CDT 2005

Thanks a lot for your help :)


"Don Burn" <burn@stopspam.acm.org> wrote in message
news:%UM9e.13744$Jg7.3133@fe03.lga...
> There was a bug in the posted code, the correct definition of DebPrompt
is:
>
> int DbgPrompt(PCHAR string, PCHAR buf, ULONG bufsize))
>
> Where:
>
> string is a string to be displayed
> buf is the buffer to receive the line from WinDBG
> bufsize is the size of the buffer
>
> The function returns the number of chatacters read. Note: this should be
> used for testing purposes only, the function is undocumented.
>
>
> --
> Don Burn (MVP, Windows DDK)
> Windows 2k/XP/2k3 Filesystem and Driver Consulting
> Remove StopSpam from the email to reply
>
>
>
> "Zhou" <changzhi_zhou@163.com> wrote in message
> news:euCzodlRFHA.3544@TK2MSFTNGP12.phx.gbl...
> > Dear All,
> >
> > Recently I read the article "Try This -- Interactive Driver Testing"
(The
> > NT
> > Inside, Vol 11). It introduces a minimal driver skeleton. I tried to
build
> > the code, but encountered a compiler error.
> >
> > The code uses the function "DbgPrompt". But there is no declaration of
> > DbgPrompt in any *.h files in Win DDK (2600). And there is no
information
> > about this function in DDK's help.
> >
> > I have noted that the function is exported by ntoskrnl.lib. So I added
> > "TARGETLIBS=$(DDK_LIB_PATH)\ntoskrnl.lib" in "source" file. But I still
> > need
> > to know the declaration of the function "DbgPrompt".
> >
> > Can anyone tell me about this or how to use "DbgPrompt" in drivers.
> >
> > Thanks in advance.
> >
> >
> >
>
>