将静态链接库转换为动态DLL [英] Converting static link library to dynamic dll

问题描述

我有.lib文件与其标题（.h）文件。这个文件有一些需要在C＃应用程序中使用的功能。

在谷歌搜索之后，我发现我需要从这个静态库创建一个动态DLL，并调用这个动态我从C＃代码中使用互操作的DLL。

1. 我已经创建了一个win32项目并选择了类型的DLL。



2. 包含头文件，并添加了.lib到其他依赖项。

   
   
   

   我可以看到静态库中定义的函数（当我按ctrl +空格）

作为一个全新手，我不知道如何导出函数，这是在.lib与以下签名：

  void testfun（char * inp_buff，unsigned short * inp_len，char * buffer_decomp，unsigned * output_len，unsigned short *我的动态DLL中使用不同的名称，我想要相同的签名。
 $ b 
 
 
 
 $ b 
在头文件和.cpp文件中写什么？
解决方案
如果您可以重新编译您的lib，只需将 __ declspec（dllexport）添加到要导出的所有函数的签名。
  void __declspec（dllexport）testfun（char * inp_buff，unsigned short * inp_len，char * buffer_decomp，unsigned * output_len，unsigned short * errorCode）
  
如果你不能这样做，那么你可以通过编写一个.def文件来导出它们。使用def文件，甚至可以在导出时更改函数的名称。 
  http://msdn.microsoft.com/en-us/图书馆/ 28d6s79h.aspx  
 
 
 
 ---- mylib.def ---- 
的内容
 
 
  LIBRARY 
 
 EXPORTS 
 testfun 
 newname = testfun2 
  
然后链接dll时，包含mylib.def 
  link / dll / machine：x86 /def:mylib.def mylib.lib 
  
 
 
 
 Edit2：
 
 
 
请注意，pinvoke假设您导入的函数将具有_stdcall调用约定，除非另有说明。因此，您可能需要在C＃代码中执行此操作。
  [DllImport（mylib.dll，CallingConvention = CallingConvention.Cdecl）] 
  
或者，您可以将C ++代码更改为__stdcall 
  void __declspec（dllexport）__stdcall testfun（char * inp_buff，... 
  
 
I have .lib file with its header (.h) file. This file have a few functions that need to be used in C# application.

After googling I found that I need to create a dynamic DLL from this static library and call this dynamic DLL from C# code using interop.

I have created a win32 project and selected type DLL.
Included header file and added .lib to additional dependencies.

I am able to see the functions defined in the static library (when I press ctrl + space).
As a total newbie I do not know how I can export the function, which is, in .lib with following signature:
void testfun( char* inp_buff, unsigned short* inp_len, char* buffer_decomp,unsigned *output_len,unsigned short *errorCode)
I want same signature in my dynamic DLL with a different name.

What to write in header file and .cpp file?
解决方案
If you can recompile your lib, just add __declspec(dllexport) to the signatures of all of the functions you want to be exported.
void __declspec(dllexport) testfun( char* inp_buff, unsigned short* inp_len, char* buffer_decomp,unsigned *output_len,unsigned short *errorCode)
If you can't do that, then you can export them by writing a .def file instead. Using def files you can even change the name of a function as it is exported.
http://msdn.microsoft.com/en-us/library/28d6s79h.aspx

---- contents of mylib.def ----
LIBRARY

EXPORTS
   testfun
   newname=testfun2
Then when you link the dll, include mylib.def 
link /dll /machine:x86 /def:mylib.def  mylib.lib


Edit2:

note that pinvoke assumes that the functions you import will have _stdcall calling convention unless you say otherwise.  So you might need to do this as well, in your C# code.
[DllImport("mylib.dll", CallingConvention=CallingConvention.Cdecl)]
Or, you could change your C++ code to be __stdcall 
void __declspec(dllexport) __stdcall testfun( char* inp_buff, ...


                        
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