在 c 中为 Windows 操作系统创建中断

Question

#include <stdio.h>
#include <windows.h>
..
int main()
{
while(1)
{
Timer1();   // Timer1 calls the function called TASK1 for every2ms (CreateTimerQueueTimer)
Timer2();   // Timer2 calls the function called TASK2 for every10ms 
Timer3();   // Timer3 calls the function called TASK3 for every100ms 
}
return 0:
}

int Timer1()  // This is only a Timer1 code
{
    int arg;
    HANDLE Task1;
    HANDLE HTimer1 =NULL;
    HANDLE HTimerQueue1 = NULL;
    Task1 = CreateEvent(NULL, TRUE, FALSE, NULL);
    if(NULL == Task1)
    {
        printf("CreateEvent failed (%d)n", GetLastError());
        return 1;
    }
    //create a timer queue
    HTimerQueue1 = CreateTimerQueue();
    if(NULL == HTimerQueue1)
    {
        printf("CreateTimerQueue failed (%d)n", GetLastError());
        return 2;
    }
    //phNewTimer - Pointer to a handle; this is an out value
    //TimerQueue - Timer queue handle. For the default timer queue, NULL
    //Callback - Pointer to the callback function
    //Parameter - Value passed to the callback function
    //DueTime - Time (milliseconds), before the timer is set to the signaled state for the first time 
    //Period - Timer period (milliseconds). If zero, timer is signaled only once
    //Flags - One or more of the next values (table taken from MSDN):
    //set the timer to call the timer routine in 2ms
    if(!CreateTimerQueueTimer( &HTimer1, HTimerQueue1, (WAITORTIMERCALLBACK)TASK1, &arg, 0,2,0))
    {
        printf("CreateTimerQueueTimer failed (%d)n", GetLastError());
        return 3;
    }

    //Delete all timers in the timer queue
    if(!DeleteTimerQueue(HTimerQueue1))
        printf("DeleteTimerQueue failed (%d)n", GetLastError());
    return 0;
}

我创建了一个 Timer1 函数，它调用 TASK1 函数或每 2 毫秒调用一次。我正在从主函数调用 timer1 函数。我的问题：我将计时器 1、计时器 2 和计时器 3 放在 while 循环中，然后按预期调用 TASK 函数。如果我想停止这个，那么有什么想法？？我想为此创建一个中断吗？ 如果我删除 while 循环，那么它不会每 2 毫秒、10 毫秒等调用一次函数。如何为上述程序创建中断？

Answer 1

Msdn删除DeleteTimerQueueTimer .并如注释中所述while循环之外执行此操作与其编写三个时间函数，不如编写一个带有参数的函数。

这是简单的未完成示例

#include <stdio.h>
#include <windows.h>
VOID CALLBACK task1(PVOID lpParam, BOOLEAN TimerOrWaitFired)
{
    int* arg=(int*)lpParam;
    printf("task1 we are called with arg %dn",*arg);
}
VOID CALLBACK task2(PVOID lpParam, BOOLEAN TimerOrWaitFired)
{
int* arg=(int*)lpParam;
    printf("task2 we are called with arg %dn",*arg);
}
VOID CALLBACK task3(PVOID lpParam, BOOLEAN TimerOrWaitFired)
{
 int* arg=(int*)lpParam;
    printf("task3 we are called with arg %dn",*arg);
}
HANDLE TimerTask(unsigned int period,WAITORTIMERCALLBACK task,void* arg)  ;
int main()
{
    int arg1=1,arg2=2,arg3=3;
HANDLE h1=TimerTask(2,task1,&arg1)  ;
HANDLE h2=TimerTask(10,task2,&arg2)  ;
HANDLE h3=TimerTask(8,task3,&arg3)  ;
getchar();
return 0;
}
HANDLE TimerTask(unsigned int period,WAITORTIMERCALLBACK task,void* arg)  
{
    HANDLE HTimer =NULL;
    //set the timer to call the timer routine in 2ms
    if(!CreateTimerQueueTimer( &HTimer, NULL, (WAITORTIMERCALLBACK)task,(PVOID) arg, 0,period*1000,0))
    {
        printf("CreateTimerQueueTimer failed (%d)n", GetLastError());
        return NULL;
    }

    return HTimer;
}