C/C++ Code Example: Retrieving Trigger Strings
This example retrieves a trigger string for all the triggers associated with a known task.
#include <windows.h>
#include <winbase.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;
ITaskScheduler *pITS;
///////////////////////////////////////////////////////////////////
// Call CoInitialize to initialize the COM library and then
// call 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::Activate to get the Task object.
///////////////////////////////////////////////////////////////////
ITask *pITask;
LPCWSTR lpcwszTaskName = L"Test Task";
hr = pITS->Activate(lpcwszTaskName,
IID_ITask,
(IUnknown**) &pITask);
pITS->Release();
if (FAILED(hr))
{
wprintf(L"Failed calling ITaskScheduler::Activate: ");
wprintf(L"error = 0x%x\n",hr);
CoUninitialize();
return 1;
}
///////////////////////////////////////////////////////////////////
// Call ITask::TriggerCount to retrieve the number of triggers
// associated with the task.
///////////////////////////////////////////////////////////////////
WORD plTriggerCount;
hr = pITask->GetTriggerCount (&plTriggerCount);
if (FAILED(hr))
{
wprintf(L"Failed calling ITask::GetTriggerCount: ");
wprintf(L"error = 0x%x\n",hr);
pTask->Release();
CoUninitialize();
return 1;
}
///////////////////////////////////////////////////////////////////
// Display the trigger stings, calling ITask::GetTriggerString for
// each trigger associated with the task.
///////////////////////////////////////////////////////////////////
wprintf(L"There are %i triggers with Test Task.\n",plTriggerCount);
wprintf(L"They are:\n");
WORD CurrentTrigger=0;
LPWSTR ppwszTrigger;
for (CurrentTrigger=0; CurrentTrigger<plTriggerCount; CurrentTrigger++)
{
pITask->GetTriggerString (CurrentTrigger,
&ppwszTrigger);
if (FAILED(hr))
{
wprintf(L"Failed calling ITask::GetTriggerString: ");
wprintf(L"error = 0x%x\n",hr);
pTask->Release();
CoUninitialize();
return 1;
}
wprintf(L"%i) %s\n",CurrentTrigger+1, ppwszTrigger);
}
///////////////////////////////////////////////////////////////////
// Release resources.
///////////////////////////////////////////////////////////////////
CoTaskMemFree(ppwszTrigger);
pITask->Release();
CoUninitialize();
return 0;
}
Related topics
Σχόλια
https://aka.ms/ContentUserFeedback.
Σύντομα διαθέσιμα: Καθ' όλη τη διάρκεια του 2024 θα καταργήσουμε σταδιακά τα ζητήματα GitHub ως μηχανισμό ανάδρασης για το περιεχόμενο και θα το αντικαταστήσουμε με ένα νέο σύστημα ανάδρασης. Για περισσότερες πληροφορίες, ανατρέξτε στο θέμα:Υποβολή και προβολή σχολίων για