C/C++ Code Example: Retrieving Task Idle-wait Time
This example retrieves the idle-wait time of the task and displays it on the screen. This example assumes that the task and the test task already exist on the local computer.
#include <windows.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;
///////////////////////////////////////////////////////////////////
// Call CoInitialize to initialize the COM library and then
// call CoCreateInstance to get the Task Scheduler object.
///////////////////////////////////////////////////////////////////
ITaskScheduler *pITS;
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;
lpcwszTaskName = L"Test Task";
hr = pITS->Activate(lpcwszTaskName,
IID_ITask,
(IUnknown**) &pITask);
// Release ITaskScheduler interface.
pITS->Release();
if (FAILED(hr))
{
wprintf(L"Failed calling ITaskScheduler::Activate: ");
wprintf(L"error = 0x%x\n",hr);
CoUninitialize();
return 1;
}
///////////////////////////////////////////////////////////////////
// Call ITask::GetIdleWait. Note that this method is
// inherited from IScheduledWorkItem.
///////////////////////////////////////////////////////////////////
WORD pwIdleMinutes;
WORD pwDeadlineMinutes;
hr = pITask->GetIdleWait(&pwIdleMinutes,
&pwDeadlineMinutes);
// Release the ITask interface.
pITask->Release();
if (FAILED(hr))
{
wprintf(L"Failed calling ITask::GetIdleWait: ");
wprintf(L"error = 0x%x\n",hr);
CoUninitialize();
return 1;
}
wprintf(L"The idle wait of Test Task is: \n");
wprintf(L" %d minutes\n", pwIdleMinutes);
wprintf(L" %d minutes\n", pwDeadlineMinutes);
CoUninitialize();
return 0;
}
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