Re: [fpc-devel] DLL WIN64: Entry point not found
Yury, just out of curiosity while I'm working on this DLL - with Delphi I can change the default image load adress from the DLL from $400 to anything I want, is this possible with FPC ? Mark - Original Message - From: "Yury Sidorov" <[EMAIL PROTECTED]> To: "FPC developers' list" Sent: Thursday, July 19, 2007 3:10 PM Subject: Re: [fpc-devel] DLL WIN64: Entry point not found The problem can be caused by relocation. Try to force a dll to relocate in all cases by using -WB0 command line switch. Then create sample host application using fpc and try to reproduce the problem. Yury. - Original Message - From: "Mark - WBIsoft.COM" <[EMAIL PROTECTED]> To: "FPC developers' list" Sent: Thursday, July 19, 2007 4:58 PM Subject: Re: [fpc-devel] DLL WIN64: Entry point not found I am, the only problem is the sample needs to be a complete gina - as it's the loading by WINLOGON.EXE that causes it to break !! - Original Message - From: "Yury Sidorov" <[EMAIL PROTECTED]> To: "FPC developers' list" Sent: Thursday, July 19, 2007 2:46 PM Subject: Re: [fpc-devel] DLL WIN64: Entry point not found From: "Luc Vigato, Sita Software" <[EMAIL PROTECTED]> I have downloaded the latest snapshot. The error is thill there. With the test dll which I have send yesterday it's work fine now, but the finall DLL wich contains over 20 exported function I have an error. Try to create sample dll which reproduces the problem and submit bug report. Yury. ___ fpc-devel maillist - fpc-devel@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-devel -- No virus found in this incoming message. Checked by AVG Free Edition. Version: 7.5.476 / Virus Database: 269.10.9/907 - Release Date: 18/07/2007 15:30 ___ fpc-devel maillist - fpc-devel@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-devel ___ fpc-devel maillist - fpc-devel@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-devel -- No virus found in this incoming message. Checked by AVG Free Edition. Version: 7.5.476 / Virus Database: 269.10.9/907 - Release Date: 18/07/2007 15:30 ___ fpc-devel maillist - fpc-devel@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-devel
Re: [fpc-devel] DLL WIN64: Entry point not found
I am, the only problem is the sample needs to be a complete gina - as it's the loading by WINLOGON.EXE that causes it to break !! - Original Message - From: "Yury Sidorov" <[EMAIL PROTECTED]> To: "FPC developers' list" Sent: Thursday, July 19, 2007 2:46 PM Subject: Re: [fpc-devel] DLL WIN64: Entry point not found From: "Luc Vigato, Sita Software" <[EMAIL PROTECTED]> I have downloaded the latest snapshot. The error is thill there. With the test dll which I have send yesterday it's work fine now, but the finall DLL wich contains over 20 exported function I have an error. Try to create sample dll which reproduces the problem and submit bug report. Yury. ___ fpc-devel maillist - fpc-devel@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-devel -- No virus found in this incoming message. Checked by AVG Free Edition. Version: 7.5.476 / Virus Database: 269.10.9/907 - Release Date: 18/07/2007 15:30 ___ fpc-devel maillist - fpc-devel@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-devel
Re: [fpc-devel] DLL WIN64: Entry point not found
I am running that version ! I will try to construct a simple DLL to be tested. Mark - Original Message - From: "Yury Sidorov" <[EMAIL PROTECTED]> To: "FPC developers' list" Sent: Thursday, July 19, 2007 1:51 PM Subject: Re: [fpc-devel] DLL WIN64: Entry point not found From: "Mark - WBIsoft.COM" <[EMAIL PROTECTED]> I had the same behaviour with a WIN64 DLL being loaded by WINLOGON.EXE, it fails to work - GetProcAddress calls fail, however, the same DLL loaded by an FPC app worked fine !!! I'm trying to build a simple demo DLL but with Gina replacement it's not that simple !!! I think there is some issue with the DLL image generated by FPC, just not sure what it is yet !? You need to upgrade to the latest svn version (or download snapshot) of FPC 2.1.5. DLL bugs were fixed after 2007/05/31. Yury Sidorov. ___ fpc-devel maillist - fpc-devel@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-devel -- No virus found in this incoming message. Checked by AVG Free Edition. Version: 7.5.476 / Virus Database: 269.10.9/907 - Release Date: 18/07/2007 15:30 ___ fpc-devel maillist - fpc-devel@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-devel
Re: [fpc-devel] DLL WIN64: Entry point not found
I had the same behaviour with a WIN64 DLL being loaded by WINLOGON.EXE, it fails to work - GetProcAddress calls fail, however, the same DLL loaded by an FPC app worked fine !!! I'm trying to build a simple demo DLL but with Gina replacement it's not that simple !!! I think there is some issue with the DLL image generated by FPC, just not sure what it is yet !? HTH Mark - Original Message - From: "Luc Vigato, Sita Software" <[EMAIL PROTECTED]> To: "'FPC developers' list'" Sent: Thursday, July 19, 2007 7:14 AM Subject: RE: [fpc-devel] DLL WIN64: Entry point not found A host application compiled with fpc don't have this problem. ___ fpc-devel maillist - fpc-devel@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-devel
Re: [fpc-devel] DLL WIN64: Entry point not found
Ok, try the MiTeC EXE explorer from http://www.mitec.cz I use it for my 64bit windows dll's ___ fpc-devel maillist - fpc-devel@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-devel
Re: [fpc-devel] DLL WIN64: Entry point not found
Wasn't aware CDECL on Win64 was the same as STDCALL, if so then is the export table correct - have you checked with a dependancy checker ? ___ fpc-devel maillist - fpc-devel@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-devel
Re: [fpc-devel] DLL WIN64: Entry point not found
I think the calling convention be STDCALL ? Mark - Original Message - From: "Luc Vigato, Sita Software" <[EMAIL PROTECTED]> To: Sent: Wednesday, July 18, 2007 10:43 AM Subject: [fpc-devel] DLL WIN64: Entry point not found Hello, I have compiled a DLL under Win64. It's a UDF-library for Firbird 2.1. Under Linux 64bit all things are working, only in WIN64 not. The problem is that Firebird says that he cannot find the Entry Point of each of my functions. It's not a Firebird problem, i have made a test application who calls the function from the DLL and i have the same error "entry point not found". Calling convention is: cdecl Can someone help me please ? These is my command line to compile the library. fpc -S2 -Sh -dFREE_IT -Fu../Units SitaUdfLib.dpr Output of fpc - Free Pascal Compiler version 2.1.5 [2007/05/31] for x86_64 Copyright (c) 1993-2007 by Florian Klaempfl Target OS: Win64 for x64 Compiling SitaUdfLib.dpr Compiling UnitFonctionUdfString.pas Linking SitaUdfLib.dll 977 lines compiled, 0.5 sec, 635888 bytes code, 312064 bytes data 1 note(s) issued ___ fpc-pascal maillist - [EMAIL PROTECTED] http://lists.freepascal.org/mailman/listinfo/fpc-pascal ___ fpc-devel maillist - fpc-devel@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-devel -- No virus found in this incoming message. Checked by AVG Free Edition. Version: 7.5.476 / Virus Database: 269.10.8/906 - Release Date: 17/07/2007 18:30 ___ fpc-devel maillist - fpc-devel@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-devel
Re: [fpc-devel] LoadLibrary fails if called from a DLL
Hi Yury,
have now recompiled the DLL with the latest SVN build using the 2_2 fixes but
get the same problem, load library returns the same hex value 0x7c37000 - the
actual procedure I have in the DLL is as follows
// cut code here
function GetModuleHandle(lpModuleName: PCHAR): cardinal; stdcall; external
'kernel32.dll' name 'GetModuleHandleA';
function LoadLibrary(lpLibFileName: PCHAR): cardinal; stdcall; external
'kernel32.dll' name 'LoadLibraryA';
function GetProcAddress(hModule: HMODULE; lpProcName: LPCSTR): FARPROC;
stdcall; external 'kernel32.dll' name 'GetProcAddress';
procedure debug(fn, tx : string);
var f : textfile;
begin
assignfile(f,'c:\skelgina.log');
if fileexists('c:\skelgina.log') then
append(f)
else
rewrite(f);
writeln (f,timetostr(now) + ' - ' + fn + ': ' + tx);
writeln (f);
closefile(f);
end;
procedure GetProcedureAddress(var P: Pointer; const ModuleName, ProcName:
string); stdcall;
var
ModuleHandle: cardinal;
begin
debug('GetProcedureAddress','Called');
debug('GetProcedureAddress','ModuleName: '+modulename);
debug('GetProcedureAddress','ProcName: '+procname);
if not Assigned(P) then
begin
debug('GetProcedureAddress','P is not assigned');
begin
ModuleHandle := SafeLoadLibrary('MSGINA.DLL');
debug('GetProcedureAddress','LoadLibrary MSGINA.DLL returns
$'+inttohex(ModuleHandle,16));
end;
P := Pointer(GetProcAddress(ModuleHandle, PChar(ProcName)));
end
else
debug('GetProcedureAddress','P is already assigned');
debug('GetProcedureAddress','Exits - P assigned '+booltostr(assigned(p)));
end;
// end code here
Any thoughts on this ? I pulled the GetProcedureAddress function from the
Jwa??? components to test incase it was my implementation of the LoadLIbrary
code in FPC but obviously it's not !!!
Cheers
Mark
- Original Message -
From: Yury Sidorov
To: FPC developers' list
Sent: Sunday, July 08, 2007 6:24 PM
Subject: Re: [fpc-devel] LoadLibrary fails if called from a DLL
Go to sources folder and execute:
make distclean
make all
make install SNAPSHOT=1 INSTALL_PREFIX=C:/some_folder
Yury.
- Original Message -
From: Mark - WBIsoft.COM
To: FPC developers' list
Sent: Sunday, July 08, 2007 8:15 PM
Subject: Re: [fpc-devel] LoadLibrary fails if called from a DLL
THanks, one final (i hope) question
I assume I need to grab the entire folder and recompile it - if so I assume I
can compile with FPC itself
Mark
- Original Message -
From: Yury Sidorov
To: FPC developers' list
Sent: Sunday, July 08, 2007 6:12 PM
Subject: Re: [fpc-devel] LoadLibrary fails if called from a DLL
Get sources from svn using this path:
http://svn.freepascal.org/svn/fpc/branches/fixes_2_2
I dont know where snapshots can be found.
Yury.
- Original Message -
From: Mark - WBIsoft.COM
To: FPC developers' list
Sent: Sunday, July 08, 2007 8:06 PM
Subject: Re: [fpc-devel] LoadLibrary fails if called from a DLL
Thanks,
can you suggest the best way (ie. the correct url) for me to run with the
svn.exe command to get the latest snapshot as I'm unsure where the x86_64 stuff
is - esp as it would appear to have vanished from the sourceforge page ?
What's the current x86_64 snapshot version ?
Thanks
Mark
- Original Message -
From: Yury Sidorov
To: FPC developers' list
Sent: Sunday, July 08, 2007 6:05 PM
Subject: Re: [fpc-devel] LoadLibrary fails if called from a DLL
Hi,
I fixed DLL related a few weeks ago. You need to get more fresh snapshot
and test it.
Yury.
- Original Message -
From: Mark - WBIsoft.COM
To: FPC developers' list
Sent: Sunday, July 08, 2007 7:59 PM
Subject: Re: [fpc-devel] LoadLibrary fails if called from a DLL
Hi Yury,
specifically the file was lazarus-0.9.23-fpc-2.1.5-20070531-win64.exe
Hope this helps ?
Mark
- Original Message -
From: Yury Sidorov
To: FPC developers' list
Sent: Sunday, July 08, 2007 5:28 PM
Subject: Re: [fpc-devel] LoadLibrary fails if called from a DLL
Hello,
How old is snapshot you are using?
Yury Sidorov.
- Original Message -
From: Mark - WBIsoft.COM
To: fpc-devel@lists.freepascal.org
Sent: Saturday, July 07, 2007 11:51 AM
Subject: [fpc-devel] LoadLibrary fails if called from a DLL
Hi,
I'm having a strang
Re: [fpc-devel] LoadLibrary fails if called from a DLL
Yeah, I spooted that with a windows DLL as well ! - Original Message - From: "Marco van de Voort" <[EMAIL PROTECTED]> To: "FPC developers' list" Sent: Monday, July 09, 2007 9:22 AM Subject: Re: [fpc-devel] LoadLibrary fails if called from a DLL I fixed DLL related a few weeks ago. You need to get more fresh snapshot and test it. (I happened to test a couple of Unix related problems, and the issues are still there, most notably the initialization sections not being run. I assume that is not by design?!?) ___ fpc-devel maillist - fpc-devel@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-devel -- No virus found in this incoming message. Checked by AVG Free Edition. Version: 7.5.476 / Virus Database: 269.10.2/890 - Release Date: 07/07/2007 15:26 ___ fpc-devel maillist - fpc-devel@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-devel
Re: [fpc-devel] LoadLibrary fails if called from a DLL
Thanks for the d/l link. Will install this before I try the svn builds and see how we go. Thanks a lot guys Mark - Original Message - From: "Vincent Snijders" <[EMAIL PROTECTED]> To: "FPC developers' list" Sent: Sunday, July 08, 2007 6:21 PM Subject: Re: [fpc-devel] LoadLibrary fails if called from a DLL On Sun, 08 Jul 2007 20:12:39 +0300 Yury Sidorov <[EMAIL PROTECTED]> wrote: Get sources from svn using this path: http://svn.freepascal.org/svn/fpc/branches/fixes_2_2 I dont know where snapshots can be found. Yury. You can download a lazarus snapshot for win64 with fpc 2.1.5 (i.e. fixes_2_2) from http://www.hu.freepascal.org/lazarus/ Vincent ___ fpc-devel maillist - fpc-devel@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-devel -- No virus found in this incoming message. Checked by AVG Free Edition. Version: 7.5.476 / Virus Database: 269.10.2/890 - Release Date: 07/07/2007 15:26 ___ fpc-devel maillist - fpc-devel@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-devel
Re: [fpc-devel] LoadLibrary fails if called from a DLL
Thanks :o)
- Original Message -
From: Yury Sidorov
To: FPC developers' list
Sent: Sunday, July 08, 2007 6:24 PM
Subject: Re: [fpc-devel] LoadLibrary fails if called from a DLL
Go to sources folder and execute:
make distclean
make all
make install SNAPSHOT=1 INSTALL_PREFIX=C:/some_folder
Yury.
- Original Message -
From: Mark - WBIsoft.COM
To: FPC developers' list
Sent: Sunday, July 08, 2007 8:15 PM
Subject: Re: [fpc-devel] LoadLibrary fails if called from a DLL
THanks, one final (i hope) question
I assume I need to grab the entire folder and recompile it - if so I assume I
can compile with FPC itself
Mark
- Original Message -
From: Yury Sidorov
To: FPC developers' list
Sent: Sunday, July 08, 2007 6:12 PM
Subject: Re: [fpc-devel] LoadLibrary fails if called from a DLL
Get sources from svn using this path:
http://svn.freepascal.org/svn/fpc/branches/fixes_2_2
I dont know where snapshots can be found.
Yury.
- Original Message -----
From: Mark - WBIsoft.COM
To: FPC developers' list
Sent: Sunday, July 08, 2007 8:06 PM
Subject: Re: [fpc-devel] LoadLibrary fails if called from a DLL
Thanks,
can you suggest the best way (ie. the correct url) for me to run with the
svn.exe command to get the latest snapshot as I'm unsure where the x86_64 stuff
is - esp as it would appear to have vanished from the sourceforge page ?
What's the current x86_64 snapshot version ?
Thanks
Mark
- Original Message -
From: Yury Sidorov
To: FPC developers' list
Sent: Sunday, July 08, 2007 6:05 PM
Subject: Re: [fpc-devel] LoadLibrary fails if called from a DLL
Hi,
I fixed DLL related a few weeks ago. You need to get more fresh snapshot
and test it.
Yury.
- Original Message -----
From: Mark - WBIsoft.COM
To: FPC developers' list
Sent: Sunday, July 08, 2007 7:59 PM
Subject: Re: [fpc-devel] LoadLibrary fails if called from a DLL
Hi Yury,
specifically the file was lazarus-0.9.23-fpc-2.1.5-20070531-win64.exe
Hope this helps ?
Mark
- Original Message -
From: Yury Sidorov
To: FPC developers' list
Sent: Sunday, July 08, 2007 5:28 PM
Subject: Re: [fpc-devel] LoadLibrary fails if called from a DLL
Hello,
How old is snapshot you are using?
Yury Sidorov.
----- Original Message -
From: Mark - WBIsoft.COM
To: fpc-devel@lists.freepascal.org
Sent: Saturday, July 07, 2007 11:51 AM
Subject: [fpc-devel] LoadLibrary fails if called from a DLL
Hi,
I'm having a strange issue with the LoadLibrary call in the 64bit beta
version of the free pascal compiler (fpc 2.1.5 with lazarus 0.9.23 beta) -
standard install from the sourceforge download and installed in the default
c:\lazarus directory.
I have written a function in FPC that I have used in Delphi for many
many years with out problem. Ok, here's a simple piece of code
function myfunction(a, var b : dword) : boolean;
var dllh : cardinal;
fun : function (a : dword; var b : dword) : boolean; stdcall;
begin
result := false;
dllh := loadlibrary('c:\windows\system32\somelib.dll');
if dllh <> 0 then
begin
fun := nil;
fun := getprocaddress(dllh,'someproc');
if fun <> nil then result := fun(a,b);
end
else
result := false;
end;
Now here's my problem - very simply if I compile this into a standard
console application it works fine, however, if I compile it into the DLL I am
planing to run it in it fails - the loadlibrary call ALWAYS returns 0x7C37
which appears to be a memory address rather than a handle - the result is that
the getprocaddress returns an invalid address and fails.
So, why is the loadlibrary call failing (or returning this memory
address) when in a DLL but NOT when it's in a console app.
Any help would be great, as I cannot seem to find an implementation of
GETLASTERROR to pass to SYSERRORMESSAGE to display any error from the OS if
there is one !
Thanks folks
Mark
Kind regards
Mark Cook
WBIsoft.COM
Any opinions expressed in this message are those of the individual and
not necessarily the company. This message and any files transmitted with it are
confidential and solely for the use of the intended recipient. If you are not
the intended recipient or the person responsible for delivering to the intended
recipient, be advised that you have received this message in error and that an
Re: [fpc-devel] LoadLibrary fails if called from a DLL
THanks, one final (i hope) question
I assume I need to grab the entire folder and recompile it - if so I assume I
can compile with FPC itself
Mark
- Original Message -
From: Yury Sidorov
To: FPC developers' list
Sent: Sunday, July 08, 2007 6:12 PM
Subject: Re: [fpc-devel] LoadLibrary fails if called from a DLL
Get sources from svn using this path:
http://svn.freepascal.org/svn/fpc/branches/fixes_2_2
I dont know where snapshots can be found.
Yury.
- Original Message -
From: Mark - WBIsoft.COM
To: FPC developers' list
Sent: Sunday, July 08, 2007 8:06 PM
Subject: Re: [fpc-devel] LoadLibrary fails if called from a DLL
Thanks,
can you suggest the best way (ie. the correct url) for me to run with the
svn.exe command to get the latest snapshot as I'm unsure where the x86_64 stuff
is - esp as it would appear to have vanished from the sourceforge page ?
What's the current x86_64 snapshot version ?
Thanks
Mark
- Original Message -
From: Yury Sidorov
To: FPC developers' list
Sent: Sunday, July 08, 2007 6:05 PM
Subject: Re: [fpc-devel] LoadLibrary fails if called from a DLL
Hi,
I fixed DLL related a few weeks ago. You need to get more fresh snapshot
and test it.
Yury.
- Original Message -
From: Mark - WBIsoft.COM
To: FPC developers' list
Sent: Sunday, July 08, 2007 7:59 PM
Subject: Re: [fpc-devel] LoadLibrary fails if called from a DLL
Hi Yury,
specifically the file was lazarus-0.9.23-fpc-2.1.5-20070531-win64.exe
Hope this helps ?
Mark
- Original Message -
From: Yury Sidorov
To: FPC developers' list
Sent: Sunday, July 08, 2007 5:28 PM
Subject: Re: [fpc-devel] LoadLibrary fails if called from a DLL
Hello,
How old is snapshot you are using?
Yury Sidorov.
- Original Message -----
From: Mark - WBIsoft.COM
To: fpc-devel@lists.freepascal.org
Sent: Saturday, July 07, 2007 11:51 AM
Subject: [fpc-devel] LoadLibrary fails if called from a DLL
Hi,
I'm having a strange issue with the LoadLibrary call in the 64bit beta
version of the free pascal compiler (fpc 2.1.5 with lazarus 0.9.23 beta) -
standard install from the sourceforge download and installed in the default
c:\lazarus directory.
I have written a function in FPC that I have used in Delphi for many many
years with out problem. Ok, here's a simple piece of code
function myfunction(a, var b : dword) : boolean;
var dllh : cardinal;
fun : function (a : dword; var b : dword) : boolean; stdcall;
begin
result := false;
dllh := loadlibrary('c:\windows\system32\somelib.dll');
if dllh <> 0 then
begin
fun := nil;
fun := getprocaddress(dllh,'someproc');
if fun <> nil then result := fun(a,b);
end
else
result := false;
end;
Now here's my problem - very simply if I compile this into a standard
console application it works fine, however, if I compile it into the DLL I am
planing to run it in it fails - the loadlibrary call ALWAYS returns 0x7C37
which appears to be a memory address rather than a handle - the result is that
the getprocaddress returns an invalid address and fails.
So, why is the loadlibrary call failing (or returning this memory
address) when in a DLL but NOT when it's in a console app.
Any help would be great, as I cannot seem to find an implementation of
GETLASTERROR to pass to SYSERRORMESSAGE to display any error from the OS if
there is one !
Thanks folks
Mark
Kind regards
Mark Cook
WBIsoft.COM
Any opinions expressed in this message are those of the individual and
not necessarily the company. This message and any files transmitted with it are
confidential and solely for the use of the intended recipient. If you are not
the intended recipient or the person responsible for delivering to the intended
recipient, be advised that you have received this message in error and that any
use is strictly prohibited.
This email was scanned for viruses when sent, however we advise you to
carry out your own virus check before opening any attachment(s) as we cannot
accept liability for any damage sustained as a result of any software viruses.
--
___
fpc-devel maillist - fpc-devel@lists.freepascal.org
http://lists.freepascal.org/mailman/listinfo/fpc-devel
--
___
fpc-devel maillist - fpc-
Re: [fpc-devel] LoadLibrary fails if called from a DLL
Thanks,
can you suggest the best way (ie. the correct url) for me to run with the
svn.exe command to get the latest snapshot as I'm unsure where the x86_64 stuff
is - esp as it would appear to have vanished from the sourceforge page ?
What's the current x86_64 snapshot version ?
Thanks
Mark
- Original Message -
From: Yury Sidorov
To: FPC developers' list
Sent: Sunday, July 08, 2007 6:05 PM
Subject: Re: [fpc-devel] LoadLibrary fails if called from a DLL
Hi,
I fixed DLL related a few weeks ago. You need to get more fresh snapshot and
test it.
Yury.
- Original Message -
From: Mark - WBIsoft.COM
To: FPC developers' list
Sent: Sunday, July 08, 2007 7:59 PM
Subject: Re: [fpc-devel] LoadLibrary fails if called from a DLL
Hi Yury,
specifically the file was lazarus-0.9.23-fpc-2.1.5-20070531-win64.exe
Hope this helps ?
Mark
- Original Message -
From: Yury Sidorov
To: FPC developers' list
Sent: Sunday, July 08, 2007 5:28 PM
Subject: Re: [fpc-devel] LoadLibrary fails if called from a DLL
Hello,
How old is snapshot you are using?
Yury Sidorov.
- Original Message -
From: Mark - WBIsoft.COM
To: fpc-devel@lists.freepascal.org
Sent: Saturday, July 07, 2007 11:51 AM
Subject: [fpc-devel] LoadLibrary fails if called from a DLL
Hi,
I'm having a strange issue with the LoadLibrary call in the 64bit beta
version of the free pascal compiler (fpc 2.1.5 with lazarus 0.9.23 beta) -
standard install from the sourceforge download and installed in the default
c:\lazarus directory.
I have written a function in FPC that I have used in Delphi for many many
years with out problem. Ok, here's a simple piece of code
function myfunction(a, var b : dword) : boolean;
var dllh : cardinal;
fun : function (a : dword; var b : dword) : boolean; stdcall;
begin
result := false;
dllh := loadlibrary('c:\windows\system32\somelib.dll');
if dllh <> 0 then
begin
fun := nil;
fun := getprocaddress(dllh,'someproc');
if fun <> nil then result := fun(a,b);
end
else
result := false;
end;
Now here's my problem - very simply if I compile this into a standard
console application it works fine, however, if I compile it into the DLL I am
planing to run it in it fails - the loadlibrary call ALWAYS returns 0x7C37
which appears to be a memory address rather than a handle - the result is that
the getprocaddress returns an invalid address and fails.
So, why is the loadlibrary call failing (or returning this memory address)
when in a DLL but NOT when it's in a console app.
Any help would be great, as I cannot seem to find an implementation of
GETLASTERROR to pass to SYSERRORMESSAGE to display any error from the OS if
there is one !
Thanks folks
Mark
Kind regards
Mark Cook
WBIsoft.COM
Any opinions expressed in this message are those of the individual and not
necessarily the company. This message and any files transmitted with it are
confidential and solely for the use of the intended recipient. If you are not
the intended recipient or the person responsible for delivering to the intended
recipient, be advised that you have received this message in error and that any
use is strictly prohibited.
This email was scanned for viruses when sent, however we advise you to
carry out your own virus check before opening any attachment(s) as we cannot
accept liability for any damage sustained as a result of any software viruses.
___
fpc-devel maillist - fpc-devel@lists.freepascal.org
http://lists.freepascal.org/mailman/listinfo/fpc-devel
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Re: [fpc-devel] LoadLibrary fails if called from a DLL
Hi Yury,
specifically the file was lazarus-0.9.23-fpc-2.1.5-20070531-win64.exe
Hope this helps ?
Mark
- Original Message -
From: Yury Sidorov
To: FPC developers' list
Sent: Sunday, July 08, 2007 5:28 PM
Subject: Re: [fpc-devel] LoadLibrary fails if called from a DLL
Hello,
How old is snapshot you are using?
Yury Sidorov.
- Original Message -
From: Mark - WBIsoft.COM
To: fpc-devel@lists.freepascal.org
Sent: Saturday, July 07, 2007 11:51 AM
Subject: [fpc-devel] LoadLibrary fails if called from a DLL
Hi,
I'm having a strange issue with the LoadLibrary call in the 64bit beta
version of the free pascal compiler (fpc 2.1.5 with lazarus 0.9.23 beta) -
standard install from the sourceforge download and installed in the default
c:\lazarus directory.
I have written a function in FPC that I have used in Delphi for many many
years with out problem. Ok, here's a simple piece of code
function myfunction(a, var b : dword) : boolean;
var dllh : cardinal;
fun : function (a : dword; var b : dword) : boolean; stdcall;
begin
result := false;
dllh := loadlibrary('c:\windows\system32\somelib.dll');
if dllh <> 0 then
begin
fun := nil;
fun := getprocaddress(dllh,'someproc');
if fun <> nil then result := fun(a,b);
end
else
result := false;
end;
Now here's my problem - very simply if I compile this into a standard console
application it works fine, however, if I compile it into the DLL I am planing
to run it in it fails - the loadlibrary call ALWAYS returns 0x7C37 which
appears to be a memory address rather than a handle - the result is that the
getprocaddress returns an invalid address and fails.
So, why is the loadlibrary call failing (or returning this memory address)
when in a DLL but NOT when it's in a console app.
Any help would be great, as I cannot seem to find an implementation of
GETLASTERROR to pass to SYSERRORMESSAGE to display any error from the OS if
there is one !
Thanks folks
Mark
Kind regards
Mark Cook
WBIsoft.COM
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Re: [fpc-devel] LoadLibrary fails if called from a DLL
Hi, it's the sourceforge build I downloaded some weeks ago, havnt checked the
latest svn build as I'm not sure how to get that into the lazarus ide yet ?
Any tips ?
Thanks
- Original Message -
From: Yury Sidorov
To: FPC developers' list
Sent: Sunday, July 08, 2007 5:28 PM
Subject: Re: [fpc-devel] LoadLibrary fails if called from a DLL
Hello,
How old is snapshot you are using?
Yury Sidorov.
- Original Message -
From: Mark - WBIsoft.COM
To: fpc-devel@lists.freepascal.org
Sent: Saturday, July 07, 2007 11:51 AM
Subject: [fpc-devel] LoadLibrary fails if called from a DLL
Hi,
I'm having a strange issue with the LoadLibrary call in the 64bit beta
version of the free pascal compiler (fpc 2.1.5 with lazarus 0.9.23 beta) -
standard install from the sourceforge download and installed in the default
c:\lazarus directory.
I have written a function in FPC that I have used in Delphi for many many
years with out problem. Ok, here's a simple piece of code
function myfunction(a, var b : dword) : boolean;
var dllh : cardinal;
fun : function (a : dword; var b : dword) : boolean; stdcall;
begin
result := false;
dllh := loadlibrary('c:\windows\system32\somelib.dll');
if dllh <> 0 then
begin
fun := nil;
fun := getprocaddress(dllh,'someproc');
if fun <> nil then result := fun(a,b);
end
else
result := false;
end;
Now here's my problem - very simply if I compile this into a standard console
application it works fine, however, if I compile it into the DLL I am planing
to run it in it fails - the loadlibrary call ALWAYS returns 0x7C37 which
appears to be a memory address rather than a handle - the result is that the
getprocaddress returns an invalid address and fails.
So, why is the loadlibrary call failing (or returning this memory address)
when in a DLL but NOT when it's in a console app.
Any help would be great, as I cannot seem to find an implementation of
GETLASTERROR to pass to SYSERRORMESSAGE to display any error from the OS if
there is one !
Thanks folks
Mark
Kind regards
Mark Cook
WBIsoft.COM
Any opinions expressed in this message are those of the individual and not
necessarily the company. This message and any files transmitted with it are
confidential and solely for the use of the intended recipient. If you are not
the intended recipient or the person responsible for delivering to the intended
recipient, be advised that you have received this message in error and that any
use is strictly prohibited.
This email was scanned for viruses when sent, however we advise you to carry
out your own virus check before opening any attachment(s) as we cannot accept
liability for any damage sustained as a result of any software viruses.
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15:26
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[fpc-devel] LoadLibrary fails if called from a DLL
Hi,
I'm having a strange issue with the LoadLibrary call in the 64bit beta version
of the free pascal compiler (fpc 2.1.5 with lazarus 0.9.23 beta) - standard
install from the sourceforge download and installed in the default c:\lazarus
directory.
I have written a function in FPC that I have used in Delphi for many many years
with out problem. Ok, here's a simple piece of code
function myfunction(a, var b : dword) : boolean;
var dllh : cardinal;
fun : function (a : dword; var b : dword) : boolean; stdcall;
begin
result := false;
dllh := loadlibrary('c:\windows\system32\somelib.dll');
if dllh <> 0 then
begin
fun := nil;
fun := getprocaddress(dllh,'someproc');
if fun <> nil then result := fun(a,b);
end
else
result := false;
end;
Now here's my problem - very simply if I compile this into a standard console
application it works fine, however, if I compile it into the DLL I am planing
to run it in it fails - the loadlibrary call ALWAYS returns 0x7C37 which
appears to be a memory address rather than a handle - the result is that the
getprocaddress returns an invalid address and fails.
So, why is the loadlibrary call failing (or returning this memory address) when
in a DLL but NOT when it's in a console app.
Any help would be great, as I cannot seem to find an implementation of
GETLASTERROR to pass to SYSERRORMESSAGE to display any error from the OS if
there is one !
Thanks folks
Mark
Kind regards
Mark Cook
WBIsoft.COM
Any opinions expressed in this message are those of the individual and not
necessarily the company. This message and any files transmitted with it are
confidential and solely for the use of the intended recipient. If you are not
the intended recipient or the person responsible for delivering to the intended
recipient, be advised that you have received this message in error and that any
use is strictly prohibited.
This email was scanned for viruses when sent, however we advise you to carry
out your own virus check before opening any attachment(s) as we cannot accept
liability for any damage sustained as a result of any software viruses.___
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