C# & C++ Load MfcDll

//MfcDll:

BSTR CMyMFCdllApp::MyDllTest(TCHAR* x){    CString str(x);    str+="_经过MFC处理的数据";    return str.AllocSysString() ;}

int CMyMFCdllApp::MyDllNumTest(int x){ int y=20; return y*x;}

byte* CMyMFCdllApp::MyDllByteTest(int ByteLenght){   byte *bx=new byte[ByteLenght];   for(int i=0;i<ByteLenght;i++)   {    bx[i]=212;   }   return bx;}//MyMFCdll.def

; MyMFCdll.def : 声明 DLL 的模块参数。

LIBRARY      "MyMFCdll"

EXPORTS      MyDllStringTest      MyDllNumTest      MyDllByteTest    ; 此处可以是显式导出

     DllCanUnloadNow     PRIVATE     DllGetClassObject   PRIVATE     DllRegisterServer   PRIVATE     DllUnregisterServer PRIVATE

 

 

C#:

        using System.Runtime.InteropServices ;

        [DllImport("MyMFCdll.dll", EntryPoint = "MyDllStringTest", CharSet = CharSet.Unicode)]        private static extern IntPtr  MyDllStringTest(string x);

        [DllImport("MyMFCdll.dll", CharSet = CharSet.Unicode)]        private static extern int MyDllNumTest(int x);

        [DllImport("MFCdll.dll", EntryPoint = "MyDllByteTest", CharSet = CharSet.Unicode)]        private static extern IntPtr MyDllByteTest(int ByteLenght);

        private void button4_Click(object sender, EventArgs e)        {//string:            MessageBox.Show(Marshal.PtrToStringBSTR(MyDllStringTest("中文123abc")));//Num:                        MessageBox.Show(MyDllNumTest(100).ToString());//Byte:            int ByteLenght = 1000;            byte[] bx = new byte[ByteLenght];            IntPtr p= MyDllByteTest(ByteLenght);

            for (int i = 0; i < ByteLenght; i++)            {                bx[i] = Marshal.ReadByte(p, i);            }        }

 

C++ :

 typedef BSTR (WINAPI *MyFunC)(TCHAR*); HINSTANCE hDllInst = ::LoadLibrary(_T("MyMFCdll.DLL")); MyFunC DllFun = (MyFunC)::GetProcAddress(hDllInst,"MyDllTest"); ::AfxMessageBox(DllFun(_T("MFCDLL动态调用"))); ::FreeLibrary(hDllInst);

 

 

//c# Load MSDOS RegDll

            System.Diagnostics.Process p = new System.Diagnostics.Process();            p.StartInfo.FileName = "cmd.exe";            p.StartInfo.UseShellExecute = false;            p.StartInfo.RedirectStandardInput = true;            p.StartInfo.RedirectStandardOutput = true;            p.StartInfo.RedirectStandardError = true;            p.StartInfo.CreateNoWindow = true;            p.Start();

            p.StandardInput.WriteLine(@"MD C:/123");            p.StandardInput.WriteLine(@"subst U: C:/123");

            p.Close();

 

//c# Auto RegDll

        using System.Runtime.InteropServices ;

 

        [DllImport("MyMFCdll2.dll", EntryPoint = "DllUnregisterServer")]        static extern int DllUnregisterServer();

 

        [DllImport("MyMFCdll2.dll", EntryPoint = "DllRegisterServer")]        static extern int DllRegisterServer();