winapi - Detecting USB notification in Qt on windows -

in qt application want save application output data file in usb pen drive. need put following features in qt application

1. detect usb drive insertion
2. i have 1 usb slot.
3. after insert want know drive number , letter , transfer file @ specific location in pc usb drive.

can tell me winapi .lib , .h , .dll file hav use above functionalities ?

if can provide code snippets, helpful me.

handle wm_devicechange - see http://lists.trolltech.com/qt-interest/2001-08/thread00698-0.html how handle windows messages in qt.

if wparam dbt_devicearrival cast lparam dev_broadcast_hdr *

if structures dbch_devicetype dbt_devtyp_volume cast lparam again, time dev_broadcast_volume *

now check dbcv_unitmask bit field, iterate on bits 0..31 , check if corresponding drive match usb drive.

if (wparam == dbt_devicearrival) {   if (((dev_broadcast_hdr *) lparam)->dbch_devicetype == dbt_devtyp_volume) {     dword mask = ((dev_broadcast_volume *) lparam)->dbcv_unitmask;     (int = 0; < 32; ++i) {       if (mask & (1 << i)) {         char rootpath[4] = "a:\\";         rootpath[0] += i;         // check if root path in rootpath usb drive.       }     }   } }