WIN32互斥體CreateMutex以及限制多開

CreateMutex（ LPSECURITY_ATTRIBUTES 【lpMutexAttributes】, //指向安全屬性的指針
BOOL 【bInitialOwner】,    //標志初始所有權
LPCTSTR 【lpName】    //指向mutex對象名稱的指針
);

// Mutex0616.cpp : Defines the entry point for the console application. //  #include "stdafx.h" #include <WINDOWS.H>
int main(int argc, char* argv[]) { //創建互斥體
    HANDLE hMutex = CreateMutex(NULL,FALSE,"xyz"); //獲取令牌
 WaitForSingleObject(hMutex,INFINITE); for (int i =0;i<10;i++) { Sleep(1000); printf("A進程的X線程：%d\n",i); } ReleaseMutex(hMutex); return 0; }

// Mutex0616.cpp : Defines the entry point for the console application. //  #include "stdafx.h" #include <WINDOWS.H>
int main(int argc, char* argv[]) { //創建互斥體
    HANDLE hMutex = CreateMutex(NULL,FALSE,"xyz"); //獲取令牌
 WaitForSingleObject(hMutex,INFINITE); for (int i =0;i<10;i++) { Sleep(1000); printf("B進程的Y線程：%d\n",i); } ReleaseMutex(hMutex); return 0; }

 

// Mutex0616.cpp : Defines the entry point for the console application. //  #include "stdafx.h" #include <WINDOWS.H>
int main(int argc, char* argv[]) { //創建互斥體
    HANDLE hMutex = CreateMutex(NULL,FALSE,"xyz"); DWORD dret = GetLastError(); if(hMutex) { if (ERROR_ALREADY_EXISTS == dret) { CloseHandle(hMutex); return 0; } } else { printf("創建失敗！程序退出！"); CloseHandle(hMutex); return 0; } //獲取令牌 //WaitForSingleObject(hMutex,INFINITE);
    
    for (;;) { Sleep(1000); printf("A進程的X線程\n"); } //ReleaseMutex(hMutex);
    
    return 0; }

 

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