---
title: kMDQueryProgressNotification
framework: coreservices
role: symbol
role_heading: Global Variable
path: coreservices/kmdqueryprogressnotification
---

# kMDQueryProgressNotification

Notification posted to indicate that a change has occurred to the query’s results list during the initial result-gathering phase of execution.

## Declaration

```swift
let kMDQueryProgressNotification: CFString!
```