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C/C++-kodexempel: Hämtar information om aktivitetskonto

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Det här kodexemplet hämtar kontoinformationen för en känd uppgift och visar kontonamnet på skärmen. Det här exemplet förutsätter att uppgiften och testaktiviteten redan finns på den lokala datorn och att schemaläggaren körs.

#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::GetAccountInformation. Note that this method is 
  // inherited from IScheduledWorkItem.
  ///////////////////////////////////////////////////////////////////
  LPWSTR pwszAccountName;
  
  hr = pITask->GetAccountInformation(&pwszAccountName);
  
  // Release the ITask interface.
  pITask->Release();

  if(hr == SCHED_E_NO_SECURITY_SERVICES)
  {
    wprintf(L"Error: SCHED_E_NO_SECURITY_SERVICES");
    wprintf(L"Security services are available only on Windows Server 2003");
    wprintf(L", Windows XP, and Windows 2000.");
    CoUninitialize();
    return 1;

  }
  
  if (FAILED(hr))
  {
    wprintf(L"Failed calling ITask::GetAccountInformation: ");
    wprintf(L"error = 0x%x\n",hr);
    CoUninitialize();
    return 1;
  }
  
  
  wprintf(L"The account name for Test Task is: ");
  wprintf(L"  %s\n",pwszAccountName);
  
  CoTaskMemFree(pwszAccountName);
  CoUninitialize();
  return 0;
}

Task Scheduler 1.0 Exempel