Getprocaddress Returned Error 127
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Getprocaddress Failed. Last Error Is 127
Stack Overflow the company Business Learn more about hiring developers or posting ads with loadlibrary failed with error 127 us Stack Overflow Questions Jobs Documentation Tags Users Badges Ask Question x Dismiss Join the Stack Overflow Community Stack Overflow is error_proc_not_found a community of 4.7 million programmers, just like you, helping each other. Join them; it only takes a minute: Sign up GetProcAddress, Error 127 (ERROR_PROC_NOT_FOUND) up vote 0 down vote favorite I am trying
Getlasterror 127
to call a function defined in a DLL, documented here: http://xiph.org/vorbis/doc/vorbisfile/ov_fopen.html LoadLibraryA is successful and GetProcAddress seems to return a valid address for every other function I've tried it with. Here it returns NULL here and GetLastError() returns 127 (ERROR_PROC_NOT_FOUND). const char* dllName = "libvorbisfile.dll"; mhDll = LoadLibraryA(dllName); typedef int (__cdecl *OV_FOPEN)(char*, OggVorbis_File*); OV_FOPEN ProcFOpen = (OV_FOPEN) GetProcAddress(mhDll, "ov_fopen"); What can I do? c++ dll ogg share|improve this question asked
Getprocaddress Ordinal
Oct 7 '11 at 3:22 user974967 92842028 1 Did you build that libvorbisfile.dll yourself or did you get it from somewhere else? In any case, depends.exe can tell you if the DLL really exports that function. –Baffe Boyois Oct 7 '11 at 3:33 add a comment| 2 Answers 2 active oldest votes up vote 4 down vote accepted According to this discussion thread, some versions of libvorbisfile.dll are missing ov_fopen. share|improve this answer answered Oct 7 '11 at 3:39 Raymond Chen 35k65789 I don't know where you found that thread but that seems to be the case here. I opened the dll in depends and the function is missing! :( –user974967 Oct 7 '11 at 3:48 6 All I did was a web search for 'ov_fopen libvorbisfile' and boom there it was on the first page of results. –Raymond Chen Oct 7 '11 at 4:23 add a comment| up vote 3 down vote Examine the DLL with Depends and find out why you can't find the function. It's probably either just the name is wrong in the documentation or there's a name mangling issue. share|improve this answer answered Oct 7 '11 at 3:32 Carey Gregory 5,78121737 add a comment| Your Answer draft saved
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Questions Jobs Documentation Tags Users Badges Ask Question x Dismiss Join the Stack Overflow Community Stack Overflow is a community of 4.7 getlasterror codes million programmers, just like you, helping each other. Join them; it only takes a minute: Sign up i am exporting dll but GetProcAddress returning 127 error ,how to resolve it? up vote 0 down vote favorite http://stackoverflow.com/questions/7682732/getprocaddress-error-127-error-proc-not-found #include "Calc.h" #include
is successful http://www.cplusplus.com/forum/windows/44641/ (does not return NULL), however GetProcAddress fails (returns NULL). 1
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if(hook_setup_func == NULL) { HINSTANCE hook_instance; if(((hook_instance = LoadLibrary(_T("hook.dll"))) != NULL) http://twigstechtips.blogspot.com/2010/02/c-getprocaddress-fails-with-local-dll.html && ((hook_uninstall_func = (hook_uninstall_type)GetProcAddress(hook_instance,"hook_uninstall")) != NULL) && ((hook_install_func = (hook_install_type)GetProcAddress(hook_instance,"hook_install")) != NULL)) { if((hook_setup_func = (hook_setup_type)GetProcAddress(hook_instance,"hook_setup")) == NULL) { throw error 127 std::runtime_error("Couldn't install the hook, case 1"); } } else { //this throws error throw std::runtime_error("Couldn't install the hook, case 2"); } } here's the corressponding declaration: 1
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typedef void (*hook_setup_type)(HWND, BOOL); typedef BOOL (*hook_install_type)(); typedef void (*hook_uninstall_type)(); hook_setup_type hook_setup_func; hook_install_type hook_install_func; hook_uninstall_type getprocaddress returned error hook_uninstall_func; and in the dll file: 1
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__declspec(dllexport) void hook_setup(HWND hwnd, BOOL use_the_hook); __declspec(dllexport) BOOL hook_install(); __declspec(dllexport) void hook_uninstall(); EDIT: error code is 127 any ideas why it fails? Best regards, Yours3!f Last edited on Jun 11, 2011 at 7:16pm UTC Jun 11, 2011 at 7:55pm UTC Xander314 (1383) Have you put the DLL lines inside 1
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extern "C" { } Otherwise, the symbol names are "scrambled" by the compiler (they have a load of numbers and symbols stuck on depending on return type, etc). Thus they are not called what you expect without the extern "C" bit. Jun 11, 2011 at 8:02pm UTC Yours3lf (91) thank you Xander314, extern "C" solved the problem :) Topic archived. No new replies allowed. C++ Information T
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