VC++中不占CPU的延时方法:
int CtestThreadDlg::DelayTime(int m)//参数为延时秒数
{
HANDLE hTimer = NULL;
HANDLE hT[2];
LARGE_INTEGER liDueTime;
liDueTime.QuadPart = m *(-100000000) / 10;
hTimer = CreateWaitableTimer(NULL, TRUE, _T("theTimer"));
hT[0] = hTimer;
if (!hTimer)
{
return 1;
}
if (!SetWaitableTimer(hTimer, &liDueTime, 0, NULL, NULL, FALSE))
{
CloseHandle(hTimer);
return 2;
}
DWORD lBusy;
do
{
lBusy = MsgWaitForMultipleObjects(1, hT, FALSE, 0xffff, QS_ALLINPUT);
const MSG msg;
GetMessage((LPMSG) &msg, NULL, 0, 0);
DispatchMessage(&msg);
} while (lBusy == (WAIT_OBJECT_0 + 1));
CloseHandle(hTimer);
return 0;
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