設定叫用方法範例

HRESULT CustomProviderMethodAsync(XAsyncBlock* async)
{
    // Set up the context for your method.
    void* context;
    HRESULT hr = XAsyncBegin(async, context, CustomProviderMethodAsync, __FUNCTION__,
        [](XAsyncOp op, const XAsyncProviderData* providerData)
        {
            // Provider cases are handled here.
            return S_OK;
        });
    return hr;
}