DLL Causes MT4 build 184 to crash

New comment
 
Hi,

When I try to reference my DLL, it causes MT 4 build 184 to crash. I am only testing and I have a simple DLL that I am compiling in Visual C++ .NET 2003. Here is my simple source code:

#include "stdafx.h"
#include <stdio.h>

extern "C" _declspec(dllexport)double ShowMe(double myNum);

BOOL APIENTRY DllMain( HANDLE hModule,
DWORD ul_reason_for_call,
LPVOID lpReserved )
{
switch (ul_reason_for_call)
{
case DLL_PROCESS_ATTACH:
case DLL_THREAD_ATTACH:
case DLL_THREAD_DETACH:
case DLL_PROCESS_DETACH:
break;
}
return TRUE;
}

double ShowMe(double myNum)
{
printf("Number passed to me is: %d\n", myNum);

return myNum;
}




here is the debug code that MT4 generated:

There has been a critical error
Time : 2005.11.05 22:09
Program : Client Terminal
Version : 4.00 (build: 184, 27 Oct 2005)
Owner : MIG Investments SA (MIG Trading Station)
OS : Windows 2003 Server 5.2 Service Pack 1 (Build 3790)
Processors : 2, type 586, level 15
Memory : 1048012/340592 kb
Exception : C0000005
Address : 00475D49
Access Type : read
Access Addr : 4008FEB9

Registers : EAX=00F4AEC8 CS=001b EIP=00475D49 EFLGS=00010246
: EBX=01F49CFC SS=0023 ESP=02F1FF2C EBP=02F1FF60
: ECX=00000001 DS=0023 ESI=4008FCB9 FS=003b
: EDX=00000040 ES=0023 EDI=01F49D04 GS=0000

Stack Trace : 00466FD4 0044FEC5 77BCB530 77E66063
: 00000000 00000000 00000000 00000000
: 00000000 00000000 00000000 00000000
: 00000000 00000000 00000000 00000000
Modules :
1 : 003D0000 00017000 C:\WINDOWS\system32\odbcint.dll
2 : 00400000 002E8000 C:\Program Files\MIG Trading Station\terminal.exe
3 : 014F0000 002C5000 C:\WINDOWS\system32\xpsp2res.dll
4 : 02060000 00015000 C:\WINDOWS\system32\nvwddi.dll
5 : 02530000 00041000 C:\Program Files\MIG Trading Station\experts\libraries\printme2.dll
6 : 10000000 0016E000 C:\WINDOWS\system32\nview.dll
7 : 4BF70000 0003D000 C:\WINDOWS\system32\ODBC32.dll
8 : 5CCF0000 0000F000 C:\WINDOWS\system32\SAMLIB.dll
9 : 5F270000 00059000 C:\WINDOWS\system32\hnetcfg.dll
10 : 71AE0000 00008000 C:\WINDOWS\System32\wshtcpip.dll
11 : 71B20000 00041000 C:\WINDOWS\system32\mswsock.dll
12 : 71B70000 00036000 C:\WINDOWS\system32\UxTheme.dll
13 : 71BB0000 00009000 C:\WINDOWS\system32\WSOCK32.dll
14 : 71BF0000 00008000 C:\WINDOWS\system32\WS2HELP.dll
15 : 71C00000 00017000 C:\WINDOWS\system32\WS2_32.dll
16 : 72D60000 00008000 C:\WINDOWS\system32\msacm32.drv
17 : 72D70000 00009000 C:\WINDOWS\system32\wdmaud.drv
18 : 73EB0000 00121000 C:\WINDOWS\system32\MFC42.DLL
19 : 76190000 00012000 C:\WINDOWS\system32\MSASN1.dll
20 : 761B0000 00093000 C:\WINDOWS\system32\CRYPT32.dll
21 : 76280000 00005000 C:\WINDOWS\system32\MSIMG32.dll
22 : 762B0000 0004A000 C:\WINDOWS\system32\comdlg32.dll
23 : 76AA0000 0002D000 C:\WINDOWS\system32\WINMM.dll
24 : 76B70000 0000B000 C:\WINDOWS\system32\PSAPI.DLL
25 : 76BB0000 0002B000 C:\WINDOWS\system32\WINTRUST.dll
26 : 76C10000 00029000 C:\WINDOWS\system32\imagehlp.dll
27 : 76F10000 0002E000 C:\WINDOWS\system32\WLDAP32.dll
28 : 77210000 000A8000 C:\WINDOWS\system32\WININET.dll
29 : 77380000 00092000 C:\WINDOWS\system32\USER32.dll
30 : 77420000 00103000 C:\WINDOWS\WinSxS\X86_Microsoft.Windows.Common-Controls_6595b64144ccf1df_6.0.3790.1830_x-ww_7AE38CCF\COMCTL32.dll
31 : 77670000 00134000 C:\WINDOWS\system32\ole32.dll
32 : 77B60000 00007000 C:\WINDOWS\system32\midimap.dll
33 : 77B70000 00014000 C:\WINDOWS\system32\MSACM32.dll
34 : 77B90000 00008000 C:\WINDOWS\system32\VERSION.dll
35 : 77BA0000 0005A000 C:\WINDOWS\system32\msvcrt.dll
36 : 77C00000 00048000 C:\WINDOWS\system32\GDI32.dll
37 : 77C50000 0009F000 C:\WINDOWS\system32\RPCRT4.dll
38 : 77D00000 0008C000 C:\WINDOWS\system32\OLEAUT32.dll
39 : 77DA0000 00052000 C:\WINDOWS\system32\SHLWAPI.dll
40 : 77E00000 00022000 C:\WINDOWS\system32\NTMARTA.DLL
41 : 77E40000 00102000 C:\WINDOWS\system32\kernel32.dll
42 : 77F50000 0009C000 C:\WINDOWS\system32\ADVAPI32.dll
43 : 7C800000 000C0000 C:\WINDOWS\system32\ntdll.dll
44 : 7C8D0000 00803000 C:\WINDOWS\system32\SHELL32.dll

Call stack :
00472AEE:325B [00475D49] ?ExecuteStaticAsm@CExpertInterior
00466DAE:0226 [00466FD4] ?RunExpertInt@CExpertInterior
0044FEA5:0020 [0044FEC5] ?ThreadFunctionRun@CExpert
77BCB48D:00A3 [77BCB530] _endthreadex [C:\WINDOWS\system32\msvcrt.dll]
77E65F78:00EB [77E66063] GetModuleFileNameA [C:\WINDOWS\system32\kernel32.dll]


Does anyone know what is causing this?

Thanks,

Mike
 
You need to provide in your dll "__stdcall calling convention" - same convention provide WIN API functions
 
Thanks Slawa, I just tried what you suggested and everything works!

Mike
New comment
Reason: