C++ (Cpp) ITask_QueryInterface Examples

Example #1

File: task_scheduler.c Project: wine-mirror/wine

static HRESULT WINAPI MSTASK_ITaskScheduler_Activate(ITaskScheduler *iface,
        LPCWSTR task_name, REFIID riid, IUnknown **unknown)
{
    ITask *task;
    IPersistFile *pfile;
    HRESULT hr;

    TRACE("%p, %s, %s, %p\n", iface, debugstr_w(task_name), debugstr_guid(riid), unknown);

    hr = ITaskScheduler_NewWorkItem(iface, task_name, &CLSID_CTask, riid, (IUnknown **)&task);
    if (hr != S_OK) return hr;

    hr = ITask_QueryInterface(task, &IID_IPersistFile, (void **)&pfile);
    if (hr == S_OK)
    {
        WCHAR *curfile;

        hr = IPersistFile_GetCurFile(pfile, &curfile);
        if (hr == S_OK)
        {
            hr = IPersistFile_Load(pfile, curfile, STGM_READ | STGM_SHARE_DENY_WRITE);
            CoTaskMemFree(curfile);
        }

        IPersistFile_Release(pfile);
    }

    if (hr == S_OK)
        *unknown = (IUnknown *)task;
    else
        ITask_Release(task);
    return hr;
}

Example #2

File: task.c Project: GYGit/reactos

static HRESULT WINAPI MSTASK_IPersistFile_QueryInterface(
        IPersistFile* iface,
        REFIID riid,
        void **ppvObject)
{
    TaskImpl *This = impl_from_IPersistFile(iface);
    TRACE("(%p, %s, %p)\n", iface, debugstr_guid(riid), ppvObject);
    return ITask_QueryInterface(&This->ITask_iface, riid, ppvObject);
}