Task scheduler in Vista

Task scheduler in Vista

• koko

  Anton - yes, thank you for reporting, looks like this is a regression bug. How badly affected are you

  
  

• andrew_zep

  Hi,

      When I get a task triger from one scheduled task and reset the time of the triger then save it, the task triger can't be updated. Do you have a solution Thanks!

  
  
  

• Dale Beyer

  If the task is set to run 'Execute Independent of Logged in user', you will have to make a call to SetAccountInformation(...) and pass in the userId/Passwd before you save the Scheduled Task after trigger updates.
  Hope that helps.
  

• Darrin Turner

  
  
  Task schedular runs elevated. The API may require elevation too, have you tried that
  
  I'm not seeing any bug that exactly matches your issue. I see an issue that the documentation needs be updated. I will see if can get that person to look into this more.

  
  

  
  
  

• bhanoji

  I marked your answer as a work around until fixed. My understanding is that this is a high priority and hopefully in the first SP release.
  
  If you need help with your work around please post back.
  
  

• Chris Honcoop

  Thanks for your great help! It works. I have another question about ITaskScheduler. How to use the flag TASK_FLAG_DELETE_WHEN_DONE to delete a task when it's done I set the only trigger's type as TASK_TIME_TRIGGER_ONCE. Thanks!
  
  

• datahook

  Hi,

  what modification i needs to run the task in this security option (run whether user is logged on or not)

  TASK_EVENT_TRIGGER_AT_SYSTEMSTART i am using this task event but its not initiative on system startup

  Regards

  
  
  

• ShadowRayz

  I compile with level="requireAdministrator" in .manifest.
  
  This test program should help you reproduce the issue. Error checking is omitted for clarity.
  Windows XP shows "GetExitCode returned 0x0 code=0x0" while Vista shows "GetExitCode returned 0x41303 code=0x0".
  
  #include<windows.h>
  #include<tchar.h>
  #include<lm.h>
  #include<initguid.h>
  #include<mstask.h>
  #include<comdef.h>
  
  _COM_SMARTPTR_TYPEDEF(ITaskScheduler,__uuidof(ITaskScheduler));
  _COM_SMARTPTR_TYPEDEF(ITask,__uuidof(ITask));
  _COM_SMARTPTR_TYPEDEF(IScheduledWorkItem,__uuidof(IScheduledWorkItem));
  _COM_SMARTPTR_TYPEDEF(ITaskTrigger,__uuidof(ITaskTrigger));
  
  int _tmain(int argc, _TCHAR* argv[])
  {
  CoInitialize(0);
  ITaskSchedulerPtr s;
  IUnknownPtr u;
  s.CreateInstance(CLSID_CTaskScheduler);
  s->Delete(L"test");
  {
  s->NewWorkItem(L"test",CLSID_CTask,IID_ITask,&u);
  ITaskPtr t;
  u->QueryInterface(&t);
  t->SetApplicationName(L"c:\\windows\\system32\\notepad.exe");
  t->SetFlags(TASK_FLAG_RUN_ONLY_IF_LOGGED_ON);
  WCHAR name[UNLEN+1];
  DWORD foo=UNLEN+1;
  GetUserNameW(name,&foo);
  t->SetAccountInformation(name,0);
  
  WORD bar;
  ITaskTriggerPtr tt;
  t->CreateTrigger(&bar,&tt);
  TASK_TRIGGER tr={};
  tr.cbTriggerSize=sizeof tr;
  tr.TriggerType=TASK_TIME_TRIGGER_ONCE;
  SYSTEMTIME st;
  GetLocalTime(&st);
  tr.wBeginYear=st.wYear;
  tr.wBeginMonth=st.wMonth;
  tr.wBeginDay=st.wDay;
  tr.wEndYear=3000;
  tr.wEndMonth=1;
  tr.wEndDay=1;
  tr.wStartHour=st.wHour;
  tr.wStartMinute=st.wMinute+1;
  if(st.wSecond>55)st.wMinute+=1;
  tt->SetTrigger(&tr);
  
  IPersistFilePtr f;
  t->QueryInterface(&f);
  f->Save(0,TRUE);
  }
  MessageBoxW(0,L"Wait till notepad starts up, then close notepad and click OK",L"",MB_OK);
  {
  s->Activate(L"test",IID_ITask,&u);
  ITaskPtr t;
  u->QueryInterface(&t);
  DWORD code=0xbbbbcccc;
  HRESULT hr=t->GetExitCode(&code);
  WCHAR msg[1024];
  wsprintfW(msg,L"GetExitCode returned 0x%x code=0x%x\n",hr,code);
  MessageBoxW(0,msg,L"",MB_OK);
  }
  return 0;
  }
  
  
  

• sph3ra

  Not much. It is workaroundable with the help of IScheduledWorkItem::GetMostRecentRunTime. This function allows to determine whether the task has actually been run or not.
  
  
• Task scheduler in Vista