进程一, 建立映射文件,填写数据,并发出Event的信号;
进程二,打开映射文件,收到Event的信号时读取数据.
#include <windows.h> #include <string.h> #include <iostream> using namespace std; #define FILE_SIZE 1024 static HANDLE hMapFile; static LPVOID lpMapAddress; static LPCTSTR g_szEventName="EventName"; 
void Write(char* data)
{ 
if(lpMapAddress!=NULL){ 
memset(lpMapAddress,0,FILE_SIZE); sprintf((char*)lpMapAddress,"%s",data); 
} 
} void Read(){ if(lpMapAddress!=NULL){ printf("%s
",lpMapAddress); } } void Process1(){ //写数据 hMapFile = CreateFileMapping( INVALID_HANDLE_VALUE, // Current file handle. NULL, // Default security. PAGE_READWRITE, // Read/write permission. 0, // Max. object size. FILE_SIZE, // Size of hFile. "MyFileMappingObject"); // Name of mapping object. if (hMapFile == NULL) { printf("Could not create file-mapping object."); return ; } // lpMapAddress = MapViewOfFile(hMapFile, // Handle to mapping object. FILE_MAP_ALL_ACCESS, // Read/write permission 0, // Max. object size. 0, // Size of hFile. FILE_SIZE); // Map entire file. if (lpMapAddress == NULL) { printf("Could not map view of file."); return ; } ::Sleep(10000); //Write data HANDLE hEvent=::OpenEvent( EVENT_MODIFY_STATE, FALSE, g_szEventName); while(hEvent!=NULL){ scanf("%s",lpMapAddress); ::SetEvent(hEvent); } ::CloseHandle(hEvent); hEvent=INVALID_HANDLE_VALUE; } void Process2(){ //读数据 hMapFile = OpenFileMapping(FILE_MAP_ALL_ACCESS, // Read/write permission. FALSE, // Do not inherit the name "MyFileMappingObject"); // of the mapping object. if (hMapFile == NULL) { printf("Could not open file-mapping object.
"); return; } lpMapAddress = MapViewOfFile(hMapFile, // Handle to mapping object. FILE_MAP_ALL_ACCESS, // Read/write permission. 0, // Max. object size. 0, // Size of hFile. FILE_SIZE); // Map entire file. if (lpMapAddress == NULL) { printf("Could not map view of file.
"); return; } //Wait for data HANDLE hEvent=::CreateEvent( NULL, TRUE, FALSE, g_szEventName); while(hEvent!=NULL){ ::WaitForSingleObject(hEvent,INFINITE); ::ResetEvent(hEvent); ::Read(); } ::CloseHandle(hEvent); hEvent=INVALID_HANDLE_VALUE; } void main(){ int flag; cin>>flag; if(flag==1){ Process1(); } else if(flag==2){ Process2(); } }