如何通过Windows API知道任务调度器的任务开始时间？

#include <windows.h>
#include <taskschd.h>
#include <comdef.h>

#pragma comment(lib, "taskschd.lib")
#pragma comment(lib, "comsupp.lib")

int main()
{
    CoInitialize(NULL);

    ITaskService *pService = NULL;
    HRESULT hr = CoCreateInstance(CLSID_TaskScheduler, NULL, CLSCTX_INPROC_SERVER, IID_ITaskService, (void**)&pService);
    if (FAILED(hr))
    {
        // 错误处理
        return 1;
    }

    hr = pService->Connect(_variant_t(), _variant_t(), _variant_t(), _variant_t());
    if (FAILED(hr))
    {
        // 错误处理
        pService->Release();
        return 1;
    }

    ITaskFolder *pRootFolder = NULL;
    hr = pService->GetFolder(_bstr_t(L"\\"), &pRootFolder);
    if (FAILED(hr))
    {
        // 错误处理
        pService->Release();
        return 1;
    }

    IRegisteredTask *pTask = NULL;
    hr = pRootFolder->GetTask(_bstr_t(L"任务名称"), &pTask);
    if (FAILED(hr))
    {
        // 错误处理
        pRootFolder->Release();
        pService->Release();
        return 1;
    }

    ITaskDefinition *pTaskDef = NULL;
    hr = pTask->get_Definition(&pTaskDef);
    if (FAILED(hr))
    {
        // 错误处理
        pTask->Release();
        pRootFolder->Release();
        pService->Release();
        return 1;
    }

    ITriggerCollection *pTriggers = NULL;
    hr = pTaskDef->get_Triggers(&pTriggers);
    if (FAILED(hr))
    {
        // 错误处理
        pTaskDef->Release();
        pTask->Release();
        pRootFolder->Release();
        pService->Release();
        return 1;
    }

    LONG triggerCount = 0;
    hr = pTriggers->get_Count(&triggerCount);
    if (FAILED(hr))
    {
        // 错误处理
        pTriggers->Release();
        pTaskDef->Release();
        pTask->Release();
        pRootFolder->Release();
        pService->Release();
        return 1;
    }

    for (LONG i = 1; i <= triggerCount; i++)
    {
        ITrigger *pTrigger = NULL;
        hr = pTriggers->get_Item(i, &pTrigger);
        if (FAILED(hr))
        {
            // 错误处理
            pTriggers->Release();
            pTaskDef->Release();
            pTask->Release();
            pRootFolder->Release();
            pService->Release();
            return 1;
        }

        BSTR startBoundary;
        hr = pTrigger->get_StartBoundary(&startBoundary);
        if (SUCCEEDED(hr))
        {
            // 输出任务开始时间
            wprintf(L"任务开始时间：%s\n", startBoundary);
            SysFreeString(startBoundary);
        }

        pTrigger->Release();
    }

    pTriggers->Release();
    pTaskDef->Release();
    pTask->Release();
    pRootFolder->Release();
    pService->Release();

    CoUninitialize();

    return 0;
}