C/C++ 程式碼範例:擷取工作狀態
本範例會擷取工作的目前狀態,並在畫面上顯示。 本範例假設工作和測試工作已存在於本機電腦上。
#include <windows.h>
#include <initguid.h>
#include <ole2.h>
#include <mstask.h>
#include <msterr.h>
#include <wchar.h>
int main(int argc, char **argv)
{
HRESULT hr = S_OK;
///////////////////////////////////////////////////////////////////
// Call CoInitialize to initialize the COM library and then
// call CoCreateInstance to get the Task Scheduler object.
///////////////////////////////////////////////////////////////////
ITaskScheduler *pITS;
hr = CoInitialize(NULL);
if (SUCCEEDED(hr))
{
hr = CoCreateInstance(CLSID_CTaskScheduler,
NULL,
CLSCTX_INPROC_SERVER,
IID_ITaskScheduler,
(void **) &pITS);
if (FAILED(hr))
{
CoUninitialize();
return 1;
}
}
else
{
return 1;
}
///////////////////////////////////////////////////////////////////
// Call ITaskScheduler::Activate to get the Task object.
///////////////////////////////////////////////////////////////////
ITask *pITask;
LPCWSTR lpcwszTaskName;
lpcwszTaskName = L"Test Task";
hr = pITS->Activate(lpcwszTaskName,
IID_ITask,
(IUnknown**) &pITask);
// Release ITaskScheduler interface.
pITS->Release();
if (FAILED(hr))
{
wprintf(L"Failed calling ITaskScheduler::Activate: ");
wprintf(L"error = 0x%x\n",hr);
CoUninitialize();
return 1;
}
///////////////////////////////////////////////////////////////////
// Call ITask::GetStatus. Note that this method is
// inherited from IScheduledWorkItem.
///////////////////////////////////////////////////////////////////
HRESULT phrStatus;
hr = pITask->GetStatus(&phrStatus);
// Release the ITask interface.
pITask->Release();
if (FAILED(hr))
{
wprintf(L"Failed calling ITask::GetStatus: ");
wprintf(L"error = 0x%x\n",hr);
CoUninitialize();
return 1;
}
wprintf(L"The status of Test Task is: ");
switch(phrStatus)
{
case SCHED_S_TASK_READY:
wprintf(L" SCHED_S_TASK_READY\n");
break;
case SCHED_S_TASK_RUNNING:
wprintf(L" SCHED_S_TASK_RUNNING\n");
break;
case SCHED_S_TASK_DISABLED:
wprintf(L" SCHED_S_TASK_DISABLED\n");
break;
case SCHED_S_TASK_HAS_NOT_RUN:
wprintf(L" SCHED_S_TASK_HAS_NOT_RUN\n");
break;
case SCHED_S_TASK_NOT_SCHEDULED:
wprintf(L" SCHED_S_TASK_NOT_SCHEDULED\n");
break;
case SCHED_S_TASK_NO_MORE_RUNS:
wprintf(L" SCHED_S_TASK_NO_MORE_RUNS\n");
break;
case SCHED_S_TASK_NO_VALID_TRIGGERS:
wprintf(L" SCHED_S_TASK_NO_VALID_TRIGGERS\n");
break;
default:
wprintf(L" unknown status flag!\n");
}
CoUninitialize();
return 0;
}
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