Writing Windows WDM Device Drivers
A nuts-and-bolts reference highlighting the Windows Driver Model (WDM).
TABLE OF CONTENTS Writing Windows WDM Device Drivers
Plug and Play Notification
Plug and Play Notification informs Win32 programs and device drivers of device change events that interest them, such as device arrival and removal. They can also refuse requests to remove a device. PnP Notification uses a device interface GUID or a file handle to identify which devices are of interest.
Win32 applications and device drivers register to receive PnP notifications so that they can cope if a device is about to be removed, or if they want to use a device that has just been added. For example, if a program is in the middle of a long transfer, it could refuse permission for a device to be removed. In addition, device drivers can be informed of all devices that expose the required device interface.
Win32 PnP Notification
A Win32 program calls RegisterDeviceNotification to register that it wants to receive PnP Notification device change messages. You must pass either a window handle or (in W2000 only) a service status handle. The NotificationFilter parameter points a structure that says what type of events you want to receive.
To receive events about devices with a particular device interface, pass a DEV_BROADCAST_DEVICEINTERFACE structure pointer to RegisterDeviceNotification. Set the dbcc_classguid field to the device interface GUID of interest. Set the dbcc_size and dbcc_devicetype fields appropriately.
I have not tried it, but passing a DEV_BROADCAST_HANDLE structure pointer should let you receive events from one open file handle, including custom events.
Do not forget...
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