The following example creates a timer that will be signaled after a 10 second delay. First, the code uses the CreateWaitableTimer function to create a waitable timer object. Then it uses the SetWaitableTimer function to set the timer. The code uses the WaitForSingleObject function to determine when the timer has been signaled.
#include <windows.h>
#include <stdio.h>
int main()
{
HANDLE hTimer = NULL;
LARGE_INTEGER liDueTime;
liDueTime.QuadPart = -100000000LL;
// Create an unnamed waitable timer.
hTimer = CreateWaitableTimer(NULL, TRUE, NULL);
if (NULL == hTimer)
{
printf("CreateWaitableTimer failed (%d)\n", GetLastError());
return 1;
}
printf("Waiting for 10 seconds...\n");
// Set a timer to wait for 10 seconds.
if (!SetWaitableTimer(hTimer, &liDueTime, 0, NULL, NULL, 0))
{
printf("SetWaitableTimer failed (%d)\n", GetLastError());
return 2;
}
// Wait for the timer.
if (WaitForSingleObject(hTimer, INFINITE) != WAIT_OBJECT_0)
printf("WaitForSingleObject failed (%d)\n", GetLastError());
else printf("Timer was signaled.\n");
return 0;
}
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