Hi,
Sorry for my ignorance, but I'm a bit new to C++.
I've been handed over a C++ app written in VS2002 which I have to convert to
VS2005. Apparently it's been written in a C style, but cannot comment
myself!
Following the conversion I have numerous errors, which following some
digging around turns out to be because _export is obsolete, and
__declspec(dlle xport) is the replacement. e.g.
Changed:
extern "C" BOOL _export vcgl_posting_ex ists(char * Chart, char *VisibleId,
TK_CONF * TkConf);
To:
extern "C" BOOL __declspec(dlle xport) vcgl_posting_ex ists(char * Chart, char
*VisibleId, TK_CONF * TkConf);
I've changed the entries & recompiled under 2005 but I now get 'Invalid
Access to Memory Location" when trying to register it. To make sure I
compiled the same source (with the changes) under VS2002 and it gave me
exactly the same message! So it looks like the 2005 conversion was not
responsible.
Prior to any work, we used to get 'The specified module could not be found'
when registering the dll, but it would still put entries into the registry
OK, so not sure if it's related. If it is, how do I fix it?!
Any ideas? I do not have a clue!
Martin 7 1905
>I've changed the entries & recompiled under 2005 but I now get 'Invalid Access to Memory Location" when trying to register it. To make sure I compiled the same source (with the changes) under VS2002 and it gave me exactly the same message! So it looks like the 2005 conversion was not responsible.
I'd agree.
Prior to any work, we used to get 'The specified module could not be found' when registering the dll, but it would still put entries into the registry
Had you rebuilt the DLL from the sources you'd been given at that
point?
If not, I'd suspect you've not been given the same source. :(
Any ideas? I do not have a clue!
Rather than guessing, you'll need to debug it - build a debug
configuration and learn to use the debugger.
Dave
Hi Martin,
Welcome to MSDN Newsgroup!
In the current situation, I hope you can send me a simplified sample. So I
can repro this problem on my side. I think it's more efficient to get
closer to resolving your issue.
If you have any questions or concerns, please let me know. I am standing by
to help you. Thanks for your understanding!
Best Regards,
Terry Fei [MSFT]
Microsoft Community Support
Get Secure! www.microsoft.com/security
-------------------- From: "Martin Pritchard" <ma************ *@newsgroups.no spam> Subject: Bizzare error following change of _export to __declspec(dlle xport) Date: Wed, 1 Mar 2006 13:14:49 -0000 Lines: 35 X-Priority: 3 X-MSMail-Priority: Normal X-Newsreader: Microsoft Outlook Express 6.00.2900.2180 X-RFC2646: Format=Flowed; Original X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.2180 Message-ID: <eJ************ **@TK2MSFTNGP10 .phx.gbl> Newsgroups: microsoft.publi c.dotnet.langua ges.vc NNTP-Posting-Host: host217-34-108-233.in-addr.btopenworl d.com
217.34.108.233Path: TK2MSFTNGXA03.p hx.gbl!TK2MSFTN GP08.phx.gbl!TK 2MSFTNGP10.phx. gbl Xref: TK2MSFTNGXA03.p hx.gbl microsoft.publi c.dotnet.langua ges.vc:54546 X-Tomcat-NG: microsoft.publi c.dotnet.langua ges.vc
Hi,
Sorry for my ignorance, but I'm a bit new to C++.
I've been handed over a C++ app written in VS2002 which I have to convert
toVS2005. Apparently it's been written in a C style, but cannot comment myself!
Following the conversion I have numerous errors, which following some digging around turns out to be because _export is obsolete, and __declspec(dll export) is the replacement. e.g.
Changed: extern "C" BOOL _export vcgl_posting_ex ists(char * Chart, char *VisibleId, TK_CONF * TkConf);
To: extern "C" BOOL __declspec(dlle xport) vcgl_posting_ex ists(char * Chart,
char*VisibleId, TK_CONF * TkConf);
I've changed the entries & recompiled under 2005 but I now get 'Invalid Access to Memory Location" when trying to register it. To make sure I compiled the same source (with the changes) under VS2002 and it gave me exactly the same message! So it looks like the 2005 conversion was not responsible.
Prior to any work, we used to get 'The specified module could not be
found'when registering the dll, but it would still put entries into the registry OK, so not sure if it's related. If it is, how do I fix it?!
Any ideas? I do not have a clue!
Martin
"David Lowndes" <Da****@example .invalid> wrote in message
news:n1******** *************** *********@4ax.c om... I've changed the entries & recompiled under 2005 but I now get 'Invalid Access to Memory Location" when trying to register it. To make sure I compiled the same source (with the changes) under VS2002 and it gave me exactly the same message! So it looks like the 2005 conversion was not responsible . I'd agree.
Prior to any work, we used to get 'The specified module could not be found' when registering the dll, but it would still put entries into the registry
Had you rebuilt the DLL from the sources you'd been given at that point?
Yep. And the app run's fine despite the error. If not, I'd suspect you've not been given the same source. :(
Any ideas? I do not have a clue!
Rather than guessing, you'll need to debug it - build a debug configuration and learn to use the debugger.
Dave
Any ideas where I can find out how to debug the registration process of the
dll?
Martin
Terry, thanks for the prompt response!
Unfortunately the solution is made up of 5 projects, which can't really be
broken up easily. Also, the code is my company's intellectual property blah
blah blah and sending it out of here could probably cost my job...
In general, should _export work exactly the same as __declspec(dlle xport)?
Any thing you could suggest on where to start looking for a fix?
Martin
""TerryFei" " <v-******@online.m icrosoft.com> wrote in message
news:Gh******** ******@TK2MSFTN GXA03.phx.gbl.. . Hi Martin, Welcome to MSDN Newsgroup!
In the current situation, I hope you can send me a simplified sample. So I can repro this problem on my side. I think it's more efficient to get closer to resolving your issue. If you have any questions or concerns, please let me know. I am standing by to help you. Thanks for your understanding!
Best Regards,
Terry Fei [MSFT] Microsoft Community Support Get Secure! www.microsoft.com/security
--------------------From: "Martin Pritchard" <ma************ *@newsgroups.no spam> Subject: Bizzare error following change of _export to __declspec(dl lexport) Date: Wed, 1 Mar 2006 13:14:49 -0000 Lines: 35 X-Priority: 3 X-MSMail-Priority: Normal X-Newsreader: Microsoft Outlook Express 6.00.2900.2180 X-RFC2646: Format=Flowed; Original X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.2180 Message-ID: <eJ************ **@TK2MSFTNGP10 .phx.gbl> Newsgroups: microsoft.publi c.dotnet.langua ges.vc NNTP-Posting-Host: host217-34-108-233.in-addr.btopenworl d.com 217.34.108.233Path: TK2MSFTNGXA03.p hx.gbl!TK2MSFTN GP08.phx.gbl!TK 2MSFTNGP10.phx. gbl Xref: TK2MSFTNGXA03.p hx.gbl microsoft.publi c.dotnet.langua ges.vc:54546 X-Tomcat-NG: microsoft.publi c.dotnet.langua ges.vc
Hi,
Sorry for my ignorance, but I'm a bit new to C++.
I've been handed over a C++ app written in VS2002 which I have to convert toVS2005. Apparently it's been written in a C style, but cannot comment myself!
Following the conversion I have numerous errors, which following some digging around turns out to be because _export is obsolete, and __declspec(dl lexport) is the replacement. e.g.
Changed: extern "C" BOOL _export vcgl_posting_ex ists(char * Chart, char *VisibleId, TK_CONF * TkConf);
To: extern "C" BOOL __declspec(dlle xport) vcgl_posting_ex ists(char * Chart, char*VisibleId, TK_CONF * TkConf);
I've changed the entries & recompiled under 2005 but I now get 'Invalid Access to Memory Location" when trying to register it. To make sure I compiled the same source (with the changes) under VS2002 and it gave me exactly the same message! So it looks like the 2005 conversion was not responsible .
Prior to any work, we used to get 'The specified module could not be found'when registering the dll, but it would still put entries into the registry OK, so not sure if it's related. If it is, how do I fix it?!
Any ideas? I do not have a clue!
Martin
>Any ideas where I can find out how to debug the registration process of the dll?
Martin,
Assuming this is a normal COM registration you're talking about, all
that happens to register it is that it's run like this:
regsvr32 yourdll.dll
Enter that as the command line/parameter in the debugger settings of
the project, and set a breakpoint on your DLL's DllRegisterServ er
function - or let it run till it crashes and see if you can determine
why it crashes.
Dave
Cheers,
Thanks for the link! Looking into it now...
Martin
""TerryFei" " <v-******@online.m icrosoft.com> wrote in message
news:I7******** ******@TK2MSFTN GXA03.phx.gbl.. . Hi Martin, Thanks for your update! :)
Based on my knowledge, there is no difference between _export and _declspec(dllex port). However I strongly suggest you provide an EXPORTS entry for that function in your module definition (.DEF) file when we want to export function from a specified dll. A module-definition (.DEF) file that is a text file containing one or more module statements that describe various attributes of a DLL include: LIBRARY statement statement identifies the .DEF file as belonging to a DLL EXPORTS statement lists the names of the functions exported by the DLL DESCRIPTION statement describes the purpose of the DLL (Optional) LIBRARY "DllLibrary " EXPORTS FunName @1
You can get more information about (.DEF) file from the following website: Title: Exporting from a DLL Using DEF Files URL:http://msdn2.microsoft.com/en-us/library/d91k01sh.aspx
If you have any questions or concerns, please let me know. I am standing by to help you. Thanks for your understanding!
Best Regards,
Terry Fei [MSFT] Microsoft Community Support Get Secure! www.microsoft.com/security
--------------------From: "Martin Pritchard" <ma************ *@newsgroups.no spam> References: <eJ************ **@TK2MSFTNGP10 .phx.gbl> <Gh************ **@TK2MSFTNGXA0 3.phx.gbl>Subject: Re: Bizzare error following change of _export to __declspec(dlle xport)Date: Thu, 2 Mar 2006 09:42:26 -0000 Lines: 92 X-Priority: 3 X-MSMail-Priority: Normal X-Newsreader: Microsoft Outlook Express 6.00.2900.2180 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.2180 X-RFC2646: Format=Flowed; Original Message-ID: <#S************ **@TK2MSFTNGP15 .phx.gbl> Newsgroups: microsoft.publi c.dotnet.langua ges.vc NNTP-Posting-Host: host217-34-108-233.in-addr.btopenworl d.com 217.34.108.233Path: TK2MSFTNGXA03.p hx.gbl!TK2MSFTN GP08.phx.gbl!TK 2MSFTNGP15.phx. gbl Xref: TK2MSFTNGXA03.p hx.gbl microsoft.publi c.dotnet.langua ges.vc:54587 X-Tomcat-NG: microsoft.publi c.dotnet.langua ges.vc
Terry, thanks for the prompt response!
Unfortunate ly the solution is made up of 5 projects, which can't really be broken up easily. Also, the code is my company's intellectual property blahblah blah and sending it out of here could probably cost my job...
In general, should _export work exactly the same as __declspec(dlle xport)?
Any thing you could suggest on where to start looking for a fix?
Martin
""TerryFei" " <v-******@online.m icrosoft.com> wrote in message news:Gh****** ********@TK2MSF TNGXA03.phx.gbl ... Hi Martin, Welcome to MSDN Newsgroup!
In the current situation, I hope you can send me a simplified sample. So I can repro this problem on my side. I think it's more efficient to get closer to resolving your issue. If you have any questions or concerns, please let me know. I am standing by to help you. Thanks for your understanding!
Best Regards,
Terry Fei [MSFT] Microsoft Community Support Get Secure! www.microsoft.com/security
-------------------- From: "Martin Pritchard" <ma************ *@newsgroups.no spam> Subject: Bizzare error following change of _export to __declspec( dllexport) Date: Wed, 1 Mar 2006 13:14:49 -0000 Lines: 35 X-Priority: 3 X-MSMail-Priority: Normal X-Newsreader: Microsoft Outlook Express 6.00.2900.2180 X-RFC2646: Format=Flowed; Original X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.2180 Message-ID: <eJ************ **@TK2MSFTNGP10 .phx.gbl> Newsgroup s: microsoft.publi c.dotnet.langua ges.vc NNTP-Posting-Host: host217-34-108-233.in-addr.btopenworl d.com 217.34.108.233 Path: TK2MSFTNGXA03.p hx.gbl!TK2MSFTN GP08.phx.gbl!TK 2MSFTNGP10.phx. gbl Xref: TK2MSFTNGXA03.p hx.gbl microsoft.publi c.dotnet.langua ges.vc:54546 X-Tomcat-NG: microsoft.publi c.dotnet.langua ges.vc
Hi,
Sorry for my ignorance, but I'm a bit new to C++.
I've been handed over a C++ app written in VS2002 which I have to convert to VS2005. Apparently it's been written in a C style, but cannot comment myself!
Following the conversion I have numerous errors, which following some digging around turns out to be because _export is obsolete, and __declspec( dllexport) is the replacement. e.g.
Changed: extern "C" BOOL _export vcgl_posting_ex ists(char * Chart, char *VisibleId,TK_CONF * TkConf);
To: extern "C" BOOL __declspec(dlle xport) vcgl_posting_ex ists(char * Chart, char *VisibleI d, TK_CONF * TkConf);
I've changed the entries & recompiled under 2005 but I now get 'Invalid Access to Memory Location" when trying to register it. To make sure I compiled the same source (with the changes) under VS2002 and it gave me exactly the same message! So it looks like the 2005 conversion was not responsible .
Prior to any work, we used to get 'The specified module could not be found' when registering the dll, but it would still put entries into the registryOK, so not sure if it's related. If it is, how do I fix it?!
Any ideas? I do not have a clue!
Martin
Ta,
Have entered it in and going to try and debug it.
Thanks for your help,
Martin
"David Lowndes" <Da****@example .invalid> wrote in message
news:at******** *************** *********@4ax.c om... Any ideas where I can find out how to debug the registration process of the dll?
Martin,
Assuming this is a normal COM registration you're talking about, all that happens to register it is that it's run like this:
regsvr32 yourdll.dll
Enter that as the command line/parameter in the debugger settings of the project, and set a breakpoint on your DLL's DllRegisterServ er function - or let it run till it crashes and see if you can determine why it crashes.
Dave This thread has been closed and replies have been disabled. Please start a new discussion. Similar topics |
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