<reason.h>找不到头文件（没有这样的文件或目录）</reason.h>

Question

我正在尝试使用以下C代码编写程序以在特定时间重新启动计算机：

//A program to reboot the computer

#include <stdio.h>
#include <Windows.h>
#include <Winbase.h>
#include <Winuser.h>
#include <Reason.h>


void myExitWindowsEx (UINT uFlags, DWORD dwReason) {

HANDLE handleToTokenUID;
LUID   UUIDShutDownPermission;
TOKEN_PRIVILEGES PrivProperties;

OpenProcessToken (GetCurrentProcess(), TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY,  &handleToTokenUID);

LookupPrivilegeValue (NULL, "SeShutdownPrivilege", &UUIDShutDownPermission);

PrivProperties.PrivilegeCount = 1;
PrivProperties.Privileges[0].Luid = UUIDShutDownPermission;
PrivProperties.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;

AdjustTokenPrivileges (handleToTokenUID, FALSE, &PrivProperties, 0, NULL, NULL);

ExitWindowsEx(uFlags, dwReason);
}


int main (void) {

struct _SYSTEMTIME time;

void myExitWindowsEx (UINT uFlags, DWORD dwReason);

//Now we are calling the function to reboot the computer with appropriate flags

while (1) {
Sleep (59000);
GetSystemTime;
if (time.wHour == 3 && time.wMinute == 0) {
myExitWindowsEx(EWX_REBOOT, SHTDN_REASON_FLAG_PLANNED);
break; }
}

return 0;
}

但是未定义SHTDN_REASON_FLAG_PLANNED（Windows关闭原因是ExitWindowsEx所需参数）的错误。原因是编译器无法找到Reason.h头文件。

谷歌搜索没有返回任何相关结果，MSDN似乎也没有提到这一点。

是否有人必须使用标头或收到类似的错误？我认为它可能有任何依赖于其他头文件，但也找不到任何信息。