---
page_type: sample
description: "Demonstrates how to extend the WpdHelloWorldDriver sample so that it supports a simulated device with a Contacts device service."
languages:
- cpp
products:
- windows
---

<!---
    name: WPD service sample driver
    platform: UMDF1
    language: cpp
    category: WPD
    description: Demonstrates how to extend the WpdHelloWorldDriver sample so that it supports a simulated device with a Contacts device service.
    samplefwlink: http://go.microsoft.com/fwlink/p/?LinkId=618010
--->

# WPD service sample driver

Demonstrates how to extend the WpdHelloWorldDriver sample so that it supports a simulated device with a Contacts device service.

## Related topics

[WPD Design Guide](http://msdn.microsoft.com/en-us/library/windows/hardware/ff597864)

[WPD Driver Development Tools](http://msdn.microsoft.com/en-us/library/windows/hardware/ff597568)

[WPD Programming Guide](https://msdn.microsoft.com/en-us/library/windows/hardware/ff597898)