read data from USB keyboard in vb6

[bh.hemanth]

hello all
I am trying to write and read from an usb device like USB mouse and USB keyboard.I am using windows APIs in vb6.The problem is like this :(whenever i call the APIs readfile and writefile, it returns 0 and does not return any data.Before reading data,I have successfully called APIs to detect the device name and its pid. Does any one know the reason why the bytes returned is always 0.Any type of help will be highly appreciated

[Jan Axelson]

Windows 2000 and later have exclusive read/write access to HIDs that are configured as a system keyboards or mice.

The Windows raw input API enables applications to read Input reports when communicating with system mice and keyboards.

http://msdn.microsoft.com/en-us/library/ms645536%28VS.85%29.aspx

Jan