Scheduled taks doens't show up in task scheduler in Windows 7 - c++

Question

I'm trying to schedule a task in Windows 7 using c++. I use the example from https://learn.microsoft.com/en-us/windows/desktop/taskschd/time-trigger-example--c--- . (just exchenged _wgetenv). My code looks like this:
/********************************************************************
This sample schedules a task to start notepad.exe 1 minute from the
time the task is registered.
********************************************************************/
#define _WIN32_DCOM
#include "pch.h"
#include <windows.h>
#include <iostream>
#include <stdio.h>
#include <comdef.h>
#include <wincred.h>
#include <stdlib.h>
// Include the task header file.
#include <taskschd.h>
#pragma comment(lib, "taskschd.lib")
#pragma comment(lib, "comsupp.lib")
#pragma comment(lib, "credui.lib")
using namespace std;
int __cdecl wmain()
{
// ------------------------------------------------------
// Initialize COM.
HRESULT hr = CoInitializeEx(NULL, COINIT_MULTITHREADED);
if (FAILED(hr))
{
printf("\nCoInitializeEx failed: %x", hr);
return 1;
}
// Set general COM security levels.
hr = CoInitializeSecurity(
NULL,
-1,
NULL,
NULL,
RPC_C_AUTHN_LEVEL_PKT_PRIVACY,
RPC_C_IMP_LEVEL_IMPERSONATE,
NULL,
0,
NULL);
if (FAILED(hr))
{
printf("\nCoInitializeSecurity failed: %x", hr);
CoUninitialize();
return 1;
}
// ------------------------------------------------------
// Create a name for the task.
LPCWSTR wszTaskName = L"Time Trigger Test Task";
// Get the windows directory and set the path to notepad.exe.
//wstring wstrExecutablePath = _wgetenv(L"WINDIR");
// changed compared with the example
wstring fullpath = L"WINDIR";
wchar_t *wchar_tpExecutablePath;
size_t len;
errno_t err =_wdupenv_s(&wchar_tpExecutablePath, &len, &fullpath[0]);
if (err) {
std::cout << "Failed to resolve WINDIR" << std::endl;
return -1;
}
std::wstring wstrExecutablePath(wchar_tpExecutablePath);
wstrExecutablePath += L"\\SYSTEM32\\NOTEPAD.EXE";
// ------------------------------------------------------
// Create an instance of the Task Service.
ITaskService *pService = NULL;
hr = CoCreateInstance(CLSID_TaskScheduler,
NULL,
CLSCTX_INPROC_SERVER,
IID_ITaskService,
(void**)&pService);
if (FAILED(hr))
{
printf("Failed to create an instance of ITaskService: %x", hr);
CoUninitialize();
return 1;
}
// Connect to the task service.
hr = pService->Connect(_variant_t(), _variant_t(),
_variant_t(), _variant_t());
if (FAILED(hr))
{
printf("ITaskService::Connect failed: %x", hr);
pService->Release();
CoUninitialize();
return 1;
}
// ------------------------------------------------------
// Get the pointer to the root task folder. This folder will hold the
// new task that is registered.
ITaskFolder *pRootFolder = NULL;
hr = pService->GetFolder(_bstr_t(L"\\"), &pRootFolder);
if (FAILED(hr))
{
printf("Cannot get Root folder pointer: %x", hr);
pService->Release();
CoUninitialize();
return 1;
}
// If the same task exists, remove it.
pRootFolder->DeleteTask(_bstr_t(wszTaskName), 0);
// Create the task definition object to create the task.
ITaskDefinition *pTask = NULL;
hr = pService->NewTask(0, &pTask);
pService->Release(); // COM clean up. Pointer is no longer used.
if (FAILED(hr))
{
printf("Failed to CoCreate an instance of the TaskService class: %x", hr);
pRootFolder->Release();
CoUninitialize();
return 1;
}
// ------------------------------------------------------
// Get the registration info for setting the identification.
IRegistrationInfo *pRegInfo = NULL;
hr = pTask->get_RegistrationInfo(&pRegInfo);
if (FAILED(hr))
{
printf("\nCannot get identification pointer: %x", hr);
pRootFolder->Release();
pTask->Release();
CoUninitialize();
return 1;
}
hr = pRegInfo->put_Author(_bstr_t(L"Author Name"));
pRegInfo->Release();
if (FAILED(hr))
{
printf("\nCannot put identification info: %x", hr);
pRootFolder->Release();
pTask->Release();
CoUninitialize();
return 1;
}
// ------------------------------------------------------
// Create the principal for the task - these credentials
// are overwritten with the credentials passed to RegisterTaskDefinition
IPrincipal *pPrincipal = NULL;
hr = pTask->get_Principal(&pPrincipal);
if (FAILED(hr))
{
printf("\nCannot get principal pointer: %x", hr);
pRootFolder->Release();
pTask->Release();
CoUninitialize();
return 1;
}
// Set up principal logon type to interactive logon
hr = pPrincipal->put_LogonType(TASK_LOGON_INTERACTIVE_TOKEN);
pPrincipal->Release();
if (FAILED(hr))
{
printf("\nCannot put principal info: %x", hr);
pRootFolder->Release();
pTask->Release();
CoUninitialize();
return 1;
}
// ------------------------------------------------------
// Create the settings for the task
ITaskSettings *pSettings = NULL;
hr = pTask->get_Settings(&pSettings);
if (FAILED(hr))
{
printf("\nCannot get settings pointer: %x", hr);
pRootFolder->Release();
pTask->Release();
CoUninitialize();
return 1;
}
// Set setting values for the task.
hr = pSettings->put_StartWhenAvailable(VARIANT_TRUE);
pSettings->Release();
if (FAILED(hr))
{
printf("\nCannot put setting information: %x", hr);
pRootFolder->Release();
pTask->Release();
CoUninitialize();
return 1;
}
// Set the idle settings for the task.
IIdleSettings *pIdleSettings = NULL;
hr = pSettings->get_IdleSettings(&pIdleSettings);
if (FAILED(hr))
{
printf("\nCannot get idle setting information: %x", hr);
pRootFolder->Release();
pTask->Release();
CoUninitialize();
return 1;
}
hr = pIdleSettings->put_WaitTimeout(_bstr_t(L"PT5M"));
pIdleSettings->Release();
if (FAILED(hr))
{
printf("\nCannot put idle setting information: %x", hr);
pRootFolder->Release();
pTask->Release();
CoUninitialize();
return 1;
}
// ------------------------------------------------------
// Get the trigger collection to insert the time trigger.
ITriggerCollection *pTriggerCollection = NULL;
hr = pTask->get_Triggers(&pTriggerCollection);
if (FAILED(hr))
{
printf("\nCannot get trigger collection: %x", hr);
pRootFolder->Release();
pTask->Release();
CoUninitialize();
return 1;
}
// Add the time trigger to the task.
ITrigger *pTrigger = NULL;
hr = pTriggerCollection->Create(TASK_TRIGGER_TIME, &pTrigger);
pTriggerCollection->Release();
if (FAILED(hr))
{
printf("\nCannot create trigger: %x", hr);
pRootFolder->Release();
pTask->Release();
CoUninitialize();
return 1;
}
ITimeTrigger *pTimeTrigger = NULL;
hr = pTrigger->QueryInterface(
IID_ITimeTrigger, (void**)&pTimeTrigger);
pTrigger->Release();
if (FAILED(hr))
{
printf("\nQueryInterface call failed for ITimeTrigger: %x", hr);
pRootFolder->Release();
pTask->Release();
CoUninitialize();
return 1;
}
hr = pTimeTrigger->put_Id(_bstr_t(L"Trigger1"));
if (FAILED(hr))
printf("\nCannot put trigger ID: %x", hr);
hr = pTimeTrigger->put_EndBoundary(_bstr_t(L"2018-12-09T08:41:00"));
if (FAILED(hr))
printf("\nCannot put end boundary on trigger: %x", hr);
// Set the task to start at a certain time. The time
// format should be YYYY-MM-DDTHH:MM:SS(+-)(timezone).
// For example, the start boundary below
// is January 1st 2005 at 12:05
hr = pTimeTrigger->put_StartBoundary(_bstr_t(L"2018-12-09T08:41:00"));
pTimeTrigger->Release();
if (FAILED(hr))
{
printf("\nCannot add start boundary to trigger: %x", hr);
pRootFolder->Release();
pTask->Release();
CoUninitialize();
return 1;
}
// ------------------------------------------------------
// Add an action to the task. This task will execute notepad.exe.
IActionCollection *pActionCollection = NULL;
// Get the task action collection pointer.
hr = pTask->get_Actions(&pActionCollection);
if (FAILED(hr))
{
printf("\nCannot get Task collection pointer: %x", hr);
pRootFolder->Release();
pTask->Release();
CoUninitialize();
return 1;
}
// Create the action, specifying that it is an executable action.
IAction *pAction = NULL;
hr = pActionCollection->Create(TASK_ACTION_EXEC, &pAction);
pActionCollection->Release();
if (FAILED(hr))
{
printf("\nCannot create the action: %x", hr);
pRootFolder->Release();
pTask->Release();
CoUninitialize();
return 1;
}
IExecAction *pExecAction = NULL;
// QI for the executable task pointer.
hr = pAction->QueryInterface(
IID_IExecAction, (void**)&pExecAction);
pAction->Release();
if (FAILED(hr))
{
printf("\nQueryInterface call failed for IExecAction: %x", hr);
pRootFolder->Release();
pTask->Release();
CoUninitialize();
return 1;
}
// Set the path of the executable to notepad.exe.
hr = pExecAction->put_Path(_bstr_t(wstrExecutablePath.c_str()));
pExecAction->Release();
if (FAILED(hr))
{
printf("\nCannot put action path: %x", hr);
pRootFolder->Release();
pTask->Release();
CoUninitialize();
return 1;
}
// ------------------------------------------------------
// Save the task in the root folder.
IRegisteredTask *pRegisteredTask = NULL;
hr = pRootFolder->RegisterTaskDefinition(
_bstr_t(wszTaskName),
pTask,
TASK_CREATE_OR_UPDATE,
_variant_t(),
_variant_t(),
TASK_LOGON_INTERACTIVE_TOKEN,
_variant_t(L""),
&pRegisteredTask);
if (FAILED(hr))
{
printf("\nError saving the Task : %x", hr);
pRootFolder->Release();
pTask->Release();
CoUninitialize();
return 1;
}
printf("\n Success! Task successfully registered. ");
// Clean up.
pRootFolder->Release();
pTask->Release();
pRegisteredTask->Release();
CoUninitialize();
return 0;
}
However, the task does not show up in task scheduler, although I executed the program with admin rights. Can anybody help?
Thanks a lot