Using memory-mapped files for EXE, DLL communication (Non-MFC)

Want to do EXE, DLL communication, Online said more is Wm_copydata message, found that need to add a message map more trouble, and the Internet is almost MFC code, want to use the console code.

I thought of the memory-mapped file. EXE sends data to the DLL.

EXE's code:

/**************************************************************************************** file name: test.cpp*  Energy: EXE and DLL communication using memory-mapped files ****************************************************************************************/# Include "stdafx.h" #include <stdlib.h> #include <afxwin.h>int _tmain (int argc, _tchar* argv[]) {    //1. Create a named file map    HANDLE hmapfile = createfilemapping (Invalid_handle_value, NULL, Page_readwrite,        0, M, L "File_ Mapping_test ");    if (NULL = = Hmapfile | | Invalid_handle_value = = hmapfile)    {        return FALSE;    }    2. Create VIEW    PVOID PBuf = MapViewOfFile (hmapfile, file_map_all_access, 0, 0, +);    if (NULL = = PBuf)    {        return FALSE;    }    3. Copy the shared data into the file map    wcscpy_s ((Pwchar) PBuf, L "Aheadshooter");    4. Load DLL    LoadLibrary (L "Testdll");    5. Wait to end    GetChar ();    6. Cancel mapping, close handle    unmapviewoffile (PBUF);    CloseHandle (hmapfile);    return 0;}

DLL code:

/**************************************************************************************** file Name: dllmain.cpp* function: EXE and DLL communication using memory-mapped files ****************************************************************************************/# Include "stdafx.h" #include <stdio.h>bool apientry DllMain (hmodule hmodule, DWORD ul_reason_f Or_call, LPVOID lpreserved) {switch (ul_reason_for_call) {case DLL_PR Ocess_attach: {//1. Open file mapping HANDLE hmapfile = openfilemapping (file_map_all_access, Fals            E, L "file_mapping_test");            if (NULL = = hmapfile) {return FALSE; }//2.            Create VIEW PVOID PBuf = MapViewOfFile (hmapfile, file_map_all_access, 0, 0, 16);            if (NULL = = PBuf) {return FALSE; }//3.            Displays the shared data MessageBox (NULL, (LPCWSTR) PBuf, L "EXE passes over the data as:", MB_OK); 4.Cancel mapping, close handle unmapviewoffile (PBUF);        CloseHandle (Hmapfile);    } break;    Case Dll_thread_attach:case Dll_thread_detach:case Dll_process_detach:break; } return TRUE;

Run:

Using memory-mapped files for EXE, DLL communication (Non-MFC)