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LPDEVICE_NOTIFY_ROUTINE (Compact 2013)

  • Artículo

3/26/2014

This function receives device notifications. Client drivers register this function with the USB driver interface to receive device notifications.

Syntax

typedef BOOL (WINAPI *LPDEVICE_NOTIFY_ROUTINE)(
  LPVOID lpvNotifyParameter,
  DWORD dwCode,
  LPDWORD* dwInfo1,
  LPDWORD* dwInfo2,
  LPDWORD* dwInfo3,
  LPDWORD* dwInfo4
);

Parameters

  • lpvNotifyParameter
    [in] Device context.

  • dwCode
    [in] This parameter can be set to the following values.

    • USB_RESUMED_DEVICE
    • USB_SUSPENDED_DEVICE
    • USB_CLOSE_DEVICE
  • dwInfo1
    Not used.
  • dwInfo2
    Not used.
  • dwInfo3
    Not used.
  • dwInfo4
    Not used.

Return Value

If a client driver processes a message it should return TRUE. If a client driver does not process a message it should return FALSE.

Remarks

All client drivers are required to process the USB_CLOSE_DEVICE message.

USB notification messages are passed to the client driver's LPDEVICE_NOTIFY_ROUTINE function. The client driver registers its notification routine with the LPREGISTER_NOTIFICATION_ROUTINE function.

Requirements

Header

usbdi.h

See Also

Reference

USB Driver Functions
LPREGISTER_NOTIFICATION_ROUTINE