{"id":1722,"date":"2019-07-29T13:35:14","date_gmt":"2019-07-29T05:35:14","guid":{"rendered":"https:\/\/www.xiaobo.li\/?p=1722"},"modified":"2019-07-29T13:35:14","modified_gmt":"2019-07-29T05:35:14","slug":"c%e8%b0%83%e7%94%a8c-c-dll%e6%96%b9%e5%bc%8f","status":"publish","type":"post","link":"https:\/\/www.xiaobo.li\/notes\/archives\/1722","title":{"rendered":"C#\u8c03\u7528C\/C++ DLL\u65b9\u5f0f"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">1\u3001\u7f16\u5199\u4e00\u4e2a\u7b80\u5355\u7684DLL<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u8bbe\u7f6e\u4e3a\u5bfc\u51fa\u51fd\u6570\uff0c\u5e76\u91c7\u7528C\u98ce\u683c\u3002\u51fd\u6570\u524d\u52a0extern \"C\" __declspec(dllexport)\u3002\u5b9a\u4e49\u51fd\u6570\u5728\u9000\u51fa\u524d\u81ea\u5df1\u6e05\u7a7a\u5806\u6808\uff0c\u5728\u51fd\u6570\u524d\u52a0__stdcall\u3002<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u65b0\u5efa\u4e00\u4e2a\u5934\u6587\u4ef6\uff0c\u5728\u5934\u6587\u4ef6\u4e2d\uff1a<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\/* \u52a0\u5165\u4efb\u610f\u4f60\u60f3\u52a0\u5165\u7684\u51fd\u6570\u5b9a\u4e49*\/<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">extern \"C\" _declspec(dllexport) int _stdcall&nbsp;add(int *x,int *y); \/\/ \u58f0\u660e\u4e3aC\u7f16\u8bd1\u3001\u94fe\u63a5\u65b9\u5f0f\u7684\u5916\u90e8\u51fd\u6570<br>extern \"C\" _declspec(dllexport) int _stdcall&nbsp;sub(int x,int y);    \/\/ \u58f0\u660e\u4e3aC\u7f16\u8bd1\u3001\u94fe\u63a5\u65b9\u5f0f\u7684\u5916\u90e8\u51fd\u6570<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u65b0\u5efa\u4e00\u4e2a.cpp\u6587\u4ef6<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">#include \"mydll.h\"\/\/\u8c8c\u4f3c\u8fd9\u4e24\u4e2a\u5934\u6587\u4ef6\u7684\u987a\u5e8f\u4e0d\u80fd\u98a0\u5012\u3002\u6211\u8bd5\u4e86\u5f88\u591a\u6b21\uff0c\u4f46\u662f\u4e0d\u80fd\u786e\u5b9a\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">int add(int *x,int *y)\/\/\u662f\u5426\u53ef\u4ee5\u7406\u89e3\u4e3a\uff0cVS2010\u5df2\u7ecf\u9ed8\u8ba4\u662f _stdcall\uff0c\u6240\u4ee5\u51fd\u6570\u4e0d\u7528\u6dfb\u52a0\u8be5\u4fee\u9970\u7b26<br>{<br>\treturn *x+*y;<br>}<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">int sub(int x,int y)<br>{<br>\treturn x-y;<br>}<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u628a\u5bfc\u51fa\u51fd\u6570\u540d\u79f0\u53d8\u4e3a\u6807\u51c6\u540d\u79f0\uff0c\u9700\u52a0\u6a21\u5757\u5b9a\u4e49\u6587\u4ef6\uff0c\u5c31\u662f.def\u6587\u4ef6\u3002<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u5185\u5bb9\u5982\u4e0b\uff1a\uff08\u9700\u8981\u6ce8\u91ca\uff0c\u524d\u9762\u52a0\u5206\u53f7\u5c31\u53ef\u4ee5\u4e86\uff0c\u6ce8\u91ca\u9700\u8981\u5355\u72ec\u884c\uff09<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">LIBRARY&nbsp;\"TEST\"<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">&nbsp;&nbsp;&nbsp;&nbsp; EXPORTS<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; ;add\u51fd\u6570<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;add<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u3000\u3000\u3000;sub\u51fd\u6570<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">&nbsp; &nbsp; &nbsp; &nbsp; &nbsp;sub<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>LIBRARY \u5e93\u540d\u79f0<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>EXPORTS \u9700\u8981\u5bfc\u51fa\u7684\u5404\u4e2a\u51fd\u6570\u540d\u79f0<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">&nbsp;&nbsp;&nbsp;&nbsp; \u91cd\u65b0\u7f16\u8bd1\u4e4b\u540e\uff0c\u518d\u7528Depends\u5de5\u5177\u770b\u4e00\u4e0b\uff0c\u51fd\u6570\u5df2\u7ecf\u53d8\u6210\u6807\u51c6add\u3002\u8fd9\u4e2a\u5728\u52a8\u6001\u52a0\u8f7d\u65f6\u5f88\u6709\u7528\uff0c\u7279\u522b\u662f\u5728GetProcAddress\u51fd\u6570\u5bfb\u627e\u5165\u5e93\u51fd\u6570\u7684\u65f6\u5019\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">2\u3001\u9759\u6001\u8c03\u7528<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u65b0\u5efa\u4e00\u4e2aC#\u7684\u63a7\u5236\u53f0\u9879\u76ee\uff0c<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">using System;<br>using System.Collections.Generic;<br>using System.Linq;<br>using System.Text;<br>using System.Runtime.InteropServices;\/\/\u6dfb\u52a0<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">namespace mytest<br>{<br>    \u3000\u3000class Program<br>    \u3000\u3000{<br>        \u3000\u3000\u3000\u3000\/\/----------------------------------------------------------------------------------------------<br>        \u3000\u3000\u3000\u3000[DllImport(\"mydll.dll\", CharSet = CharSet.Auto, CallingConvention = CallingConvention.Cdecl)]<br>        \u3000\u3000\u3000\u3000extern static int add(ref int a, ref int b);<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">        \u3000\u3000\u3000\u3000[DllImport(\"mydll.dll\", CharSet = CharSet.Auto, CallingConvention = CallingConvention.Cdecl)]<br>        \u3000\u3000\u3000\u3000extern static int sub(int a, int b);<br>        \u3000\u3000\u3000\u3000\/\/--------------------------------------------------------------------------------------------------<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u3000\u3000\u3000\u3000static void Main(string[] args)<br>        \u3000\u3000\u3000\u3000{<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"> \u3000\u3000\u3000\u3000\u3000\u3000int a, b,c,d;<br>             \u3000\u3000\u3000\u3000\u3000\u3000a = 1;<br>             \u3000\u3000\u3000\u3000\u3000\u3000b = 2;<br>             \u3000\u3000\u3000\u3000\u3000\u3000c=d= 0;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u3000\u3000\u3000\u3000\u3000\u3000Console.WriteLine(add(ref a,ref b).ToString());<br>\u3000\u3000\u3000\u3000\u3000\u3000Console.WriteLine(sub(b,a).ToString());<br>            \u3000\u3000\u3000\u3000\u3000\u3000Console.Read();<br>        \u3000\u3000\u3000\u3000}<br>    \u3000\u3000}<br>}<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">&nbsp;3\u3001\u52a8\u6001\u8c03\u7528<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">using System;<br>using System.Collections.Generic;<br>using System.Linq;<br>using System.Text;<br>using System.Runtime.InteropServices;\/\/\u6dfb\u52a0<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">namespace mytest<br>{<br>    \u3000\u3000class Program<br>    \u3000\u3000{<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">        [DllImport(\"kernel32.dll\")]<br>        private extern static IntPtr LoadLibrary(String path);\/\/path \u5c31\u662fdll\u8def\u5f84 \u8fd4\u56de\u7ed3\u679c\u4e3a0\u8868\u793a\u5931\u8d25\u3002<br>        [DllImport(\"kernel32.dll\")]<br>\n        private extern static IntPtr GetProcAddress(IntPtr lib, String \nfuncName);\/\/lib\u662fLoadLibrary\u8fd4\u56de\u7684\u53e5\u67c4\uff0cfuncName \u662f\u51fd\u6570\u540d\u79f0 \u8fd4\u56de\u7ed3\u679c\u4e3a0\u6807\u8bc6\u5931\u8d25\u3002<br>        [DllImport(\"kernel32.dll\")]<br>        private extern static bool FreeLibrary(IntPtr lib);<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">        \/\/\u58f0\u660e\u59d4\u6258<br>        [UnmanagedFunctionPointerAttribute(CallingConvention.Cdecl)] <br>        delegate int ADD(ref int x, ref int y);<br>        [UnmanagedFunctionPointerAttribute(CallingConvention.Cdecl)] <br>        delegate int SUB(int x, int y);<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">        static void Main(string[] args)<br>        {<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">            string dllPath = \"G:\\\\VS2010\u8f6f\u4ef6\u5b66\u4e60\\\\c#\u8c03\u7528C_dll\\\\mytest\\\\mytest\\\\mydll.dll\";<br>            string apiName1 = \"add\";<br>            string apiName2 = \"sub\";<br>            \/\/\u4f7f\u7528\u52a8\u6001\u52a0\u8f7d<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">            IntPtr hLib = LoadLibrary(dllPath);\/\/\u52a0\u8f7d\u51fd\u6570<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">            IntPtr apiFunction1 = GetProcAddress(hLib, apiName1);\/\/\u83b7\u53d6\u51fd\u6570\u5730\u5740<br>            IntPtr apiFunction2 = GetProcAddress(hLib, apiName2);\/\/\u83b7\u53d6\u51fd\u6570\u5730\u5740<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">            int i = Marshal.GetLastWin32Error();<br>            if (apiFunction1.ToInt32() == 0)\/\/0\u8868\u793a\u51fd\u6570\u6ca1\u627e\u5230<br>                return;<br>            if (apiFunction2.ToInt32() == 0)\/\/0\u8868\u793a\u51fd\u6570\u6ca1\u627e\u5230<br>                return;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">            \/\/\u83b7\u53d6\u51fd\u6570\u63a5\u53e3\uff0c\u76f8\u5f53\u4e8e\u51fd\u6570\u6307\u9488<br>            ADD add1 = (Delegate)Marshal.GetDelegateForFunctionPointer(apiFunction1, typeof(ADD)) as ADD;<br>            SUB sub1 = (SUB)Marshal.GetDelegateForFunctionPointer(apiFunction2, typeof(SUB));   <\/p>\n\n\n\n<p class=\"wp-block-paragraph\">            \/\/ \/\/\u8c03\u7528\u51fd\u6570<br>            int a, b,c;<br>             a = 1;<br>             b = 2;<br>             c= 0;<br>            \/\/add1(ref a,ref b);<br>            c=sub1(b,a);<br>            \/\/ \/\/\u91ca\u653e\u53e5\u67c4<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">            FreeLibrary(hLib );<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">             Console.WriteLine(c.ToString());<br>            \/\/Console.WriteLine(add(ref a,ref b).ToString());<br>            \/\/Console.WriteLine(sub(10,2).ToString());<br>            Console.Read();<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">}<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">    \u3000\u3000}<br>}<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><em>\u6ce8\u610f\uff1a<\/em><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">C#\u65f6\u5e38\u9700\u8981\u8c03\u7528C\/C++DLL\uff0c\u5f53\u4f20\u9012\u53c2\u6570\u65f6\u65f6\u5e38\u9047\u5230\u95ee\u9898\uff0c\u5c24\u5176\u662f\u4f20\u9012\u548c\u8fd4\u56de\u5b57\u7b26\u4e32\u65f6\u3002VC++\u4e2d\u4e3b\u8981\u5b57\u7b26\u4e32\u7c7b\u578b\u4e3a\uff1aLPSTR,LPCSTR, LPCTSTR, string, CString, LPCWSTR, LPWSTR\u7b49\uff0c\u4f46\u8f6c\u4e3aC#\u7c7b\u578b\u5374\u4e0d\u5b8c\u5168\u76f8\u540c\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u7c7b\u578b\u5bf9\u7167\uff1a<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">C\/C++----------C#<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">BSTR ---------&nbsp; StringBuilder<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">LPCTSTR --------- StringBuilder<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">LPCWSTR ---------&nbsp; IntPtr<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">handle---------IntPtr<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">hwnd-----------IntPtr<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">char *----------string<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">int * -----------ref int<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">int &amp;-----------ref int<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">void *----------IntPtr<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">unsigned char *-----ref byte<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Struct\u9700\u8981\u5728C#\u91cc\u91cd\u65b0\u5b9a\u4e49\u4e00\u4e2aStruct<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">CallBack\u56de\u8c03\u51fd\u6570\u9700\u8981\u5c01\u88c5\u5728\u4e00\u4e2a\u59d4\u6258\u91cc\uff0cdelegate static extern int FunCallBack(string str);<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u6ce8\u610f\u5728\u6bcf\u4e2a\u51fd\u6570\u7684\u524d\u9762\u52a0\u4e0apublic static extern +\u8fd4\u56de\u7684\u6570\u636e\u7c7b\u578b,\u5982\u679c\u4e0d\u52a0public ,\u51fd\u6570\u9ed8\u8ba4\u4e3a\u79c1\u6709\u51fd\u6570\uff0c\u8c03\u7528\u5c31\u4f1a\u51fa\u9519\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u5728C#\u8c03\u7528C++ DLL\u5c01\u88c5\u5e93\u65f6\u4f1a\u51fa\u73b0\u4e24\u4e2a\u95ee\u9898\uff1a<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">1\uff0e \u6570\u636e\u7c7b\u578b\u8f6c\u6362\u95ee\u9898&nbsp;<br>2\uff0e \u6307\u9488\u6216\u5730\u5740\u53c2\u6570\u4f20\u9001\u95ee\u9898<\/p>\n","protected":false},"excerpt":{"rendered":"<p>1\u3001\u7f16\u5199\u4e00\u4e2a\u7b80\u5355\u7684DLL \u8bbe\u7f6e\u4e3a\u5bfc\u51fa\u51fd\u6570\uff0c\u5e76\u91c7\u7528C\u98ce\u683c\u3002\u51fd\u6570\u524d\u52a0extern \" &hellip; <a href=\"https:\/\/www.xiaobo.li\/notes\/archives\/1722\">\u7ee7\u7eed\u9605\u8bfb <span class=\"meta-nav\">&rarr;<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[299],"tags":[],"class_list":["post-1722","post","type-post","status-publish","format-standard","hentry","category-csharpcode"],"_links":{"self":[{"href":"https:\/\/www.xiaobo.li\/notes\/wp-json\/wp\/v2\/posts\/1722","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.xiaobo.li\/notes\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.xiaobo.li\/notes\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.xiaobo.li\/notes\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.xiaobo.li\/notes\/wp-json\/wp\/v2\/comments?post=1722"}],"version-history":[{"count":0,"href":"https:\/\/www.xiaobo.li\/notes\/wp-json\/wp\/v2\/posts\/1722\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.xiaobo.li\/notes\/wp-json\/wp\/v2\/media?parent=1722"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.xiaobo.li\/notes\/wp-json\/wp\/v2\/categories?post=1722"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.xiaobo.li\/notes\/wp-json\/wp\/v2\/tags?post=1722"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}