hMutex

#include <iostream>#include <Windows.h>#include <tchar.h>using namespace std;HANDLE hMutex;//HANDLE CreateMutex(LPSECURITY_ATTRIBUTES lpMutexAttributes,            //BOOL bInitialOwner,            //LPCTSTR lpName);          // bInitialOwner:指定该资源初始时是否归属创建它的进程// lpName:指定互斥量资源的名称// BOOL ReleaseMutex( __in HANDLE hMutex );// 用于释放一个独占资源，进程一旦释放该资源，该资源就不在属于它了，// 如果还要用，需要重新申请得到该资源,申请资源函数// DWORD WaitForSingleObject(HANDLE hHandle, DWORD dwMilliseconds);DWORD WINAPI Fun(LPVOID pParam){    while(1)    {        WaitForSingleObject(hMutex, INFINITE);        cout << "Fun display!" << endl;        Sleep(100);        ReleaseMutex(hMutex);    }}int main(){    HANDLE hThread = CreateThread(NULL, 0, Fun, NULL, 0, NULL);    // 创建一个名为screen的互斥量，并且初始时这个互斥量不属于创建    // 它的这个进程    hMutex = CreateMutex(NULL, FALSE, _T("screen"));    CloseHandle(hThread);    while(1)    {        WaitForSingleObject(hMutex, INFINITE);        cout << "main display!" << endl;        Sleep(200);        ReleaseMutex(hMutex);    }    system("pause");    return 0;}