#include "stdio.h"
#include "process.h"
#include "windows.h"

HANDLE gEvent[2];

void main()
{
    int i;
    DWORD dwEvent;

    for (i = 0; i < 2; i++)
    {
        gEvent[i] = CreateEvent(
            NULL,
            FALSE,
            TRUE,
            NULL);
        if (gEvent[i] == NULL)
        {
            printf("Create event failed.");
            return;
        }
    }

    while (1) {
        dwEvent = WaitForMultipleObjects(
            2,
            gEvent,
            FALSE,
            INFINITE);
        ResetEvent(gEvent[dwEvent - WAIT_OBJECT_0]);
   
        switch (dwEvent)
        {
        case WAIT_OBJECT_0:
            printf("Event1 signaled.\n");
            break;

        case WAIT_OBJECT_0 + 1:
            printf("Event2 singnaled.\n");
            break;
   
        default:
            printf("error occured.\n");
            ExitProcess(0);
        }

    }


}

第三个参数改为TRUE，所有句柄被释放的时候才返回，FALSE为有一个句柄释放便返回。If this parameter is TRUE, the function returns when the state of all objects in the lpHandles array is signaled. If FALSE, the function returns when the state of any one of the objects is set to signaled.