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Exemplo de código C/C++: recuperando parâmetros de tarefa

  • Artigo

Este exemplo recupera a cadeia de caracteres de parâmetro executada quando a tarefa é executada e exibe essa cadeia de caracteres na tela. Este exemplo pressupõe que a tarefa e a tarefa de teste já existem no computador local.

#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);
  
  pITS->Release();
  if (FAILED(hr))
  {
     wprintf(L"Failed calling ITaskScheduler::Activate; error = 0x%x\n",hr);
     CoUninitialize();
     return 1;
  }
  
  
  ///////////////////////////////////////////////////////////////////
  // Call ITask::GetParameters to display the parameters string 
  // associated with "Test Task".
  ///////////////////////////////////////////////////////////////////
  
  LPWSTR lpwszParameters;
  hr = pITask->GetParameters(&lpwszParameters);
  pITask->Release();
  if (FAILED(hr))
  {
     wprintf(L"Failed calling ITask::GetApplicationName\n");
     wprintf(L" error = 0x%x\n",hr);
     CoUninitialize();
     return 1;
  }
  
  
  ///////////////////////////////////////////////////////////////////
  // Process returned parameter string. 
  ///////////////////////////////////////////////////////////////////
  
  wprintf(L"Test Task is associated with the following parameters:\n");
  wprintf(L"  %s\n", lpwszParameters);
  
  
  ///////////////////////////////////////////////////////////////////
  // Call CoTaskMemFree to free resources.
  ///////////////////////////////////////////////////////////////////
  
  CoTaskMemFree(lpwszParameters);
  CoUninitialize();
  return 0;
}

Exemplos do Agendador de Tarefas 1.0