6.3. Developing Your Driver on Windows CE Platforms


	Chapter 6. Developing a Driver

To use WinDriver to handle a Plug-and-Play device, you must first register the device with the WinDriver kernel module (windrvr6.dll).

To register the device with WinDriver, use either of the following methods:

Modify the registry to identify your device and link it to windrvr6.dll. The registry can be modified by adding the relevant information to your project.reg file.
- To identify the device by its vendor ID (<VID>) and product ID (<PID>) — as decimal values — add the following:
```
[HKEY_LOCAL_MACHINE\Drivers\USB\LoadClients\<VID>_<PID>\Default\Default\WDR] 
    "DLL"="windrvr6.dll"
```
- To identify the device by its USB class (<CLASS>), subclass (<SUBCLASS>), and protocol (<PROT>) — as decimal values — add the following:
```
[HKEY_LOCAL_MACHINE\Drivers\USB\LoadClients\Default\Default\<CLASS>_<SUBCLASS>_<PROT>\WDR]
    "DLL"="windrvr6.dll"
```
Call WDU_Init() to identify the device by its vendor and product IDs and register it with WinDriver, before connecting the device to the computer .


	For more information about the relevant registry settings, refer to USB Driver Registry Settings in the MSDN Library.


6.2. Writing the Device Driver Without DriverWizard		Chapter 7. Debugging Drivers