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C/C++ Code Example: Retrieving the Task MostRecentRun Time

  • Artikkeli

This example retrieves the time the task was last run and displays it on the screen. This example assumes that the task and the test task already exist on the local computer.

#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 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::GetMostRecentRunTime and display the most recent 
  // run time of this task.
  ///////////////////////////////////////////////////////////////////

  SYSTEMTIME pstLastRun;
    
  hr = pITask->GetMostRecentRunTime(&pstLastRun);
  
  // Release the ITask interface.
  pITask->Release();

  if (FAILED(hr))
  {
    wprintf(L"Failed calling GetMostRecentRunTime: ");
    wprintf(L"error = 0x%x\n", hr);
    CoUninitialize();
    return 1;
  }

  wprintf(L"The most recent run time for this task was: \n");
  wprintf(L"  %u/%u/%u \t %u:%02u\n", pstLastRun.wMonth,
                                      pstLastRun.wDay,
                                      pstLastRun.wYear,
                                      pstLastRun.wHour,
                                      pstLastRun.wMinute);
 

  CoUninitialize();

  return 0;
}

Task Scheduler 1.0 Examples