C/C++ 程式碼範例：擷取工作執行時間

此範例會擷取工作的執行時間，並在畫面上顯示它們。 此範例假設工作和測試工作已存在於本機電腦上。

#include <windows.h>
#include <wchar.h>
#include <stdio.h>
#include <initguid.h>
#include <ole2.h>
#include <mstask.h>
#include <msterr.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 = L"Test Task";
  hr = pITS->Activate(lpcwszTaskName,
                      IID_ITask,
                      (IUnknown**) &pITask);
  
  // Release the 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::GetRunTimes and display the next five run times for 
  // this task.
  ///////////////////////////////////////////////////////////////////
  
  SYSTEMTIME stNow;
  LPSYSTEMTIME pstListOfTimes;
  LPSYSTEMTIME pstListBegin;
  WORD wCountOfRuns = 5;
  
  GetSystemTime(&stNow);
  hr = pITask->GetRunTimes(&stNow,
                           NULL,
                           &wCountOfRuns,
                           &pstListBegin);
  pstListOfTimes = pstListBegin;
  
  // Release the ITask interface.
  pITask->Release();
  
  if (FAILED(hr))
  {
    wprintf(L"Failed calling GetRunTimes: ");
    wprintf(L"error = 0x%x\n", hr);
    CoUninitialize();
    return 1;
  }
  
  wprintf(L"The next %u runtimes for this task are: \n",wCountOfRuns);
  
  for (WORD i = 0; i < wCountOfRuns; i++)
  {
    wprintf(L"\t%u - %u/%u/%u \t %u:%u\n", i+1, pstListOfTimes->wMonth,
                                                pstListOfTimes->wDay,
                                                pstListOfTimes->wYear,
                                                pstListOfTimes->wHour,
                                                pstListOfTimes->wMinute);
    pstListOfTimes++;
  }

  CoTaskMemFree(pstListBegin);
  CoTaskMemFree(pstListOfTimes);
  CoUninitialize();

  return 0;
}

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