GetProcAddress works with __cdecl but not __stdcall; symbol mangling ??

hi,

i'm using GetProcAddress to get the address of an exported function in a dll
i load with LoadLibrary. when i build the dll with the function using the c
calling conventions (cdecl), GetProcessAddress is successful. however, when
i build the dll with the function using stdcall convention GetProcAddress
fails.

I feel like the problem may be with symbol mangling, but i'm not sure. any
suggestions are appreciated.

thanks,
bryan

 

okay, i determined what the problem was. when i prefix an underscore and
suffix an @x to the symbol, GetProcAddress succeeds. however, this is not
really desirable.

thanks.

 

If you export functions via a .DEF file, the function name won't get
decorated.

In any cases, dumpbin /exports image_name.ext_name, (sample: dumpbin
/exports c:\winnt\system32\ntoskrnl.exe) can tell what the actual exported
names are.

Calvin

--
Calvin Guan, Software Developer
SW2D-Radeon NT Core Drivers
ATI Technologies Inc.
1 Commerce Valley Drive East
Markham, Ontario, Canada L3T 7X6
Tel: (905) 882-2600 Ext. 8654
Find a driver: http://www.ati.com/support/driver.html

 

thanks calvin.

right, i really don't want to have to use a .def file.

bryan

 

This is the only way of exporting undecorared names. Forget
__declspec(dllexport) and use .DEF file instead.