Hi I'm perfroming a certain operation that requires me to create a dll in c++. I don't have a lot of experiance in c++. I created the dll and tested it in a c++ consol application and it worked fine.

Call C# code from your legacy C++ code. Now we want the build to output the ClassLibrary1.dll to the same folder as the StartClr. C: Program Files.

Kanye West 808 And Heartbreak Zshare Net. Now, I want to call a certain function in that dll from a c# code. I used this code to import the function: [DllImport('C: Documents and Settings Avi My Documents Visual Studio 2008 Projects test3 Release MyDll.dll')] static extern void Install(); Now, the problem is when I'm calling this function from my c# Form I get the following exeption: 'Unable to find an entry point named 'Install' in DLL 'C: Documents and Settings Avi My Documents Visual Studio 2008 Projects test3 Release MyDll.dll'.'

Like I said, I don't have experiance with c++ but from a little reading on the net I saw that I need to use this attribute: extern 'C' __declspec(dllexport) void Install(); in order for the function to be used outside or be known / or somthing like that. I used this attrubute just before this function but I still got this exeption. What am I doing wrong here? It's probably somthing small that I missed. Appreciate any help Avi.

The latest version of this topic can be found. Zz Huawei Advanced Tool here. For Visual Basic applications (or applications in other languages such as Pascal or Fortran) to call functions in a C/C++ DLL, the functions must be exported using the correct calling convention without any name decoration done by the compiler. __stdcall creates the correct calling convention for the function (the called function cleans up the stack and parameters are passed from right to left) but decorates the function name differently. So, when __declspec(dllexport) is used on an exported function in a DLL, the decorated name is exported. The __stdcall name decoration prefixes the symbol name with an underscore (_) and appends the symbol with an at sign (@) character followed by the number of bytes in the argument list (the required stack space). As a result, the function when declared as.

_func@12 The C calling convention ( __cdecl) decorates the name as _func. To get the decorated name, use. Use of __declspec(dllexport) does the following: • If the function is exported with the C calling convention ( _cdecl), it strips the leading underscore (_) when the name is exported. • If the function being exported does not use the C calling convention (for example, __stdcall), it exports the decorated name. Because there is no way to override where the stack cleanup occurs, you must use __stdcall.

To undecorate names with __stdcall, you must specify them by using aliases in the EXPORTS section of the.def file. This is shown as follows for the following function declaration.