DeviceIOView 1.00 is a System Utility product from nirsoft.net, DeviceIOView allows you to watch the data transfer between a utility or service and a device driver (DeviceIoControl calls). For each call to a device driver, the following information is displayed: Handle, Control Code, number of input bytes, number of output bytes, the name of the device handle, and all the input/output bytes, displayed as Hex dump.
System Requirements: This software works on Windows 2000, Windows XP, Windows Server 2003, and Windows Vista (32-bit only). Older versions of Windows are not supported.
DeviceIOView can work in Vista even when UAC (User Account Control) is turned on, as long as the process that you wish to inspect run in the same account and security context of DeviceIOView. However, if you want to inspect a process that runs under administrator account, you must also run DeviceIOView as administrator. (right-click on DeviceIOView.exe and choose 'Run As Administrator') The license of this windows utility software is Freeware, you can free download and free use this Windows Utility software.