주간 트리거 예제(C++)
이 C++ 예제에서는 매주 메모장을 실행하도록 예약된 작업을 만드는 방법을 보여줍니다. 작업에는 시작 경계, 주 간격 및 작업을 시작할 요일을 지정하는 주간 트리거가 포함되어 있습니다. 작업에는 메모장을 실행할 작업을 지정하는 작업도 포함됩니다.
다음 절차에서는 매주 실행 파일을 시작하도록 작업을 예약하는 방법을 설명합니다.
메모장을 매주 시작하도록 예약하려면
COM을 초기화하고 일반 COM 보안을 설정합니다.
ITaskService 개체를 만듭니다.
이 개체를 사용하면 지정된 폴더에 작업을 만들 수 있습니다.
작업을 만들 작업 폴더를 가져옵니다.
ITaskService::GetFolder 메서드를 사용하여 폴더를 가져와서 ITaskService::NewTask 메서드를 사용하여 ITaskDefinition 개체를 만듭니다.
작업에 대한 등록 정보와 같이 ITaskDefinition 개체를 사용하여 작업에 대한 정보를 정의합니다.
ITaskDefinition의 RegistrationInfo 속성 및 ITaskDefinition 인터페이스의 다른 속성을 사용하여 작업 정보를 정의합니다.
ITaskDefinition의 Triggers 속성을 사용하여 주간 트리거를 만들어 작업의 ITriggerCollection 인터페이스에 액세스합니다.
ITriggerCollection::Create 메서드를 사용하여 주간 트리거를 만들도록 지정합니다. 작업의 작업이 특정 요일에 지정된 시간에 실행되도록 IWeeklyTrigger 트리거에 대한 시작 경계, 주 간격 및 요일을 설정할 수 있습니다.
ITaskDefinition의 Actions 속성을 사용하여 태스크에 대한 IActionCollection 인터페이스에 액세스하여 실행할 작업에 대한 작업을 만듭니다.
IActionCollection::Create 메서드를 사용하여 만들려는 작업 유형을 지정합니다. 이 예제에서는 명령줄 작업을 실행하는 작업을 나타내는 IExecAction 개체를 사용합니다.
ITaskFolder::RegisterTaskDefinition 메서드를 사용하여 작업을 등록합니다.
다음 C++ 예제에서는 매주 메모장을 실행하도록 작업을 예약하는 방법을 보여줍니다.
/********************************************************************
This sample schedules a task to start on a weekly basis.
********************************************************************/
#define _WIN32_DCOM
#include <windows.h>
#include <iostream>
#include <stdio.h>
#include <comdef.h>
#include <wincred.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;
void main(void)
{
// ------------------------------------------------------
// Initialize COM.
HRESULT hr = CoInitializeEx(NULL, COINIT_MULTITHREADED);
if( FAILED(hr) )
{
printf("\nCoInitializeEx failed: %x", hr );
return;
}
// Set general COM security levels.
hr = CoInitializeSecurity(
NULL,
-1,
NULL,
NULL,
RPC_C_AUTHN_LEVEL_PKT,
RPC_C_IMP_LEVEL_IMPERSONATE,
NULL,
0,
NULL);
if( FAILED(hr) )
{
printf("\nCoInitializeSecurity failed: %x", hr );
CoUninitialize();
return;
}
// ------------------------------------------------------
// Create a name for the task.
LPCWSTR wszTaskName = L"Weekly Trigger Task";
// Get the windows directory and set the path to notepad.exe.
wstring wstrExecutablePath = _wgetenv( L"WINDIR");
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;
}
// 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;
}
// ------------------------------------------------------
// 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;
}
// If the same task exists, remove it.
pRootFolder->DeleteTask( _bstr_t( wszTaskName), 0 );
// Create the task builder 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 create a task definition: %x", hr);
pRootFolder->Release();
CoUninitialize();
return;
}
// ------------------------------------------------------
// 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;
}
hr = pRegInfo->put_Author( L"Author Name" );
pRegInfo->Release(); // COM clean up. Pointer is no longer used.
if( FAILED(hr) )
{
printf("\nCannot put identification info: %x", hr );
pRootFolder->Release();
pTask->Release();
CoUninitialize();
return;
}
// ------------------------------------------------------
// Get the trigger collection to insert the weekly 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;
}
ITrigger *pTrigger = NULL;
hr = pTriggerCollection->Create( TASK_TRIGGER_WEEKLY, &pTrigger );
pTriggerCollection->Release();
if( FAILED(hr) )
{
printf("\nCannot create the trigger: %x", hr );
pRootFolder->Release();
pTask->Release();
CoUninitialize();
return;
}
IWeeklyTrigger *pWeeklyTrigger = NULL;
hr = pTrigger->QueryInterface(
IID_IWeeklyTrigger, (void**) &pWeeklyTrigger );
pTrigger->Release();
if( FAILED(hr) )
{
printf("\nQueryInterface call for IWeeklyTrigger failed: %x", hr );
pRootFolder->Release();
pTask->Release();
CoUninitialize();
return;
}
hr = pWeeklyTrigger->put_Id( _bstr_t( L"Trigger1" ) );
if( FAILED(hr) )
printf("\nCannot put trigger ID: %x", hr);
// Set the task to start weekly 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 = pWeeklyTrigger->put_StartBoundary( _bstr_t(L"2005-01-01T12:05:00") );
if( FAILED(hr) )
printf("\nCannot put the start boundary: %x", hr);
// Set the time when the trigger is deactivated.
hr = pWeeklyTrigger->put_EndBoundary( _bstr_t(L"2007-01-01T12:05:00") );
if( FAILED(hr) )
printf("\nCannot put the end boundary: %x", hr);
// Define the interval for the weekly trigger.
// An interval of 2 produces an
// every other week schedule
hr = pWeeklyTrigger->put_WeeksInterval( (short)2 );
if( FAILED(hr) )
{
printf("\nCannot put weeks interval: %x", hr );
pRootFolder->Release();
pTask->Release();
CoUninitialize();
return;
}
hr = pWeeklyTrigger->put_DaysOfWeek( (short)2 ); // Runs on Monday
pWeeklyTrigger->Release();
if( FAILED(hr) )
{
printf("\nCannot put days of week interval: %x", hr );
pRootFolder->Release();
pTask->Release();
CoUninitialize();
return;
}
// ------------------------------------------------------
// 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;
}
// 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;
}
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 on IExecAction: %x", hr );
pRootFolder->Release();
pTask->Release();
CoUninitialize();
return;
}
// 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 add path for executable action: %x", hr );
pRootFolder->Release();
pTask->Release();
CoUninitialize();
return;
}
// ------------------------------------------------------
// Securely get the user name and password. The task will
// be created to run with the credentials from the supplied
// user name and password.
CREDUI_INFO cui;
TCHAR pszName[CREDUI_MAX_USERNAME_LENGTH] = "";
TCHAR pszPwd[CREDUI_MAX_PASSWORD_LENGTH] = "";
BOOL fSave;
DWORD dwErr;
cui.cbSize = sizeof(CREDUI_INFO);
cui.hwndParent = NULL;
// Ensure that MessageText and CaptionText identify
// what credentials to use and which application requires them.
cui.pszMessageText = TEXT("Account information for task registration:");
cui.pszCaptionText = TEXT("Enter Account Information for Task Registration");
cui.hbmBanner = NULL;
fSave = FALSE;
// Create the UI asking for the credentials.
dwErr = CredUIPromptForCredentials(
&cui, // CREDUI_INFO structure
TEXT(""), // Target for credentials
NULL, // Reserved
0, // Reason
pszName, // User name
CREDUI_MAX_USERNAME_LENGTH, // Max number for user name
pszPwd, // Password
CREDUI_MAX_PASSWORD_LENGTH, // Max number for password
&fSave, // State of save check box
CREDUI_FLAGS_GENERIC_CREDENTIALS | // Flags
CREDUI_FLAGS_ALWAYS_SHOW_UI |
CREDUI_FLAGS_DO_NOT_PERSIST);
if(dwErr)
{
cout << "Did not get credentials." << endl;
CoUninitialize();
return;
}
// ------------------------------------------------------
// Save the task in the root folder.
IRegisteredTask *pRegisteredTask = NULL;
hr = pRootFolder->RegisterTaskDefinition(
_bstr_t( wszTaskName ),
pTask,
TASK_CREATE_OR_UPDATE,
_variant_t(_bstr_t(pszName)),
_variant_t(_bstr_t(pszPwd)),
TASK_LOGON_PASSWORD,
_variant_t(L""),
&pRegisteredTask);
if( FAILED(hr) )
{
printf("\nError saving the Task : %x", hr );
pRootFolder->Release();
pTask->Release();
SecureZeroMemory(pszName, sizeof(pszName));
SecureZeroMemory(pszPwd, sizeof(pszPwd));
CoUninitialize();
return;
}
printf("\n Success! Task succesfully registered. " );
// Clean up
pRootFolder->Release();
pTask->Release();
pRegisteredTask->Release();
SecureZeroMemory(pszName, sizeof(pszName));
SecureZeroMemory(pszPwd, sizeof(pszPwd));
CoUninitialize();
return;
}
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