Delen via

Voorbeeld van C/C++-code: de maker van de taak ophalen

  • Artikel

In dit voorbeeld wordt de naam van de maker van de taak opgehaald en weergegeven op het scherm. In dit voorbeeld wordt ervan uitgegaan dat de taak en de testtaak al bestaan op de lokale computer.

#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::GetCreator. Note that this method is 
  // inherited from IScheduledWorkItem.
  ///////////////////////////////////////////////////////////////////
  LPWSTR ppwszCreator;
  
  hr = pITask->GetCreator(&ppwszCreator);
  
  // Release the ITask interface.
  pITask->Release();
  
  if (FAILED(hr))
  {
    wprintf(L"Failed calling ITask::GetCreator: ");
    wprintf(L"error = 0x%x\n",hr);
    CoUninitialize();
    return 1;
  }
  
  
  wprintf(L"The creator of Test Task is: ");
  wprintf(L"  %s\n",ppwszCreator);
  
  
  ///////////////////////////////////////////////////////////////////
  // Call CoTaskMemFree to free the string.
  ///////////////////////////////////////////////////////////////////
  CoTaskMemFree(ppwszCreator);
  
  CoUninitialize();
  return 0;
}

Task Scheduler 1.0-voorbeelden