vc创建或修改系统自带的计划任务

#include <windows.h>

#include <initguid.h>

#include <ole2.h>

#include <mstask.h>

#include <msterr.h>

#include <wchar.h>

#include<stdio.h>



#pragma comment(lib, "Mstask.lib")

#pragma comment(lib, "ole32.lib")



int main(int argc, char **argv)

{

 HRESULT hr = S_OK;

 ITaskScheduler *pITS;



 ///////////////////////////////////////////////////////////////////

 // Call CoInitialize to initialize the COM library and then

 // CoCreateInstance to get the Task Scheduler object.

 ///////////////////////////////////////////////////////////////////

 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::NewWorkItem to get a new Task object.

 ///////////////////////////////////////////////////////////////////



 LPCWSTR pwszTaskName;

 ITask *pITask;

 pwszTaskName = L"Test Task";



 hr = pITS->NewWorkItem(pwszTaskName,

  CLSID_CTask,

  IID_ITask,

  (IUnknown**)&pITask);



 if (FAILED(hr))

 {

  wprintf(L"Failed calling ITaskScheduler::NewWorkItem: ");

  wprintf(L"error = 0x%x\n",hr);

  CoUninitialize();

  return 1;

 }



 ///////////////////////////////////////////////////////////////////

 // Set the tasks application name.

 ///////////////////////////////////////////////////////////////////



 LPCWSTR pwszApplicationName = L"C:\\windows\\notepad.exe";



 hr = pITask->SetApplicationName(pwszApplicationName);



 if (FAILED(hr))

 {

  wprintf(L"Failed calling ITask::SetApplicationName: ");

  wprintf(L"error = 0x%x\n",hr);

  pITS->Release();

  pITask->Release();

  CoUninitialize();

  return 1;

 }



 pITask->SetAccountInformation(L"USERNAME", NULL);

 pITask->SetFlags(TASK_FLAG_RUN_ONLY_IF_LOGGED_ON);



 ///////////////////////////////////////////////////////////////////

 // Add the task to the sceduler

 ///////////////////////////////////////////////////////////////////



 pITS->AddWorkItem(pwszTaskName, pITask);

 pITS->Release(); // Release sceduler



 ///////////////////////////////////////////////////////////////////

 // Call ITask::Run to start execution of "Test Task".

 ///////////////////////////////////////////////////////////////////



 hr = pITask->Run();

 if (FAILED(hr))

 {

  wprintf(L"Failed calling ITask::Run, error = 0x%x\n",hr);

  pITask->Release();

  CoUninitialize();

  return 1;

 }



 pITask->Release();

 CoUninitialize();



 return 0;

}