Detecting USB notification in Qt on windows

Question

In my qt application I want to save some application output data to an file in my usb pen drive. I need to put following features in my qt application

1. Detect t

Answer 1

The earlier answer is now out-of-date. The following worked for me with QT5 on Windows 10, where MainWindow is derived from QMainWindow:

#include 
#include 
#include 

bool MainWindow::nativeEvent(const QByteArray& eventType, void* pMessage, long* pResult)
{
    auto pWindowsMessage = static_cast(pMessage);
    auto wParam = pWindowsMessage->wParam;
    if (wParam == DBT_DEVICEARRIVAL || wParam == DBT_DEVICEREMOVECOMPLETE) {
        auto lParam = pWindowsMessage->lParam;
        auto deviceType = reinterpret_cast(lParam)->dbch_devicetype;
        if (deviceType == DBT_DEVTYP_VOLUME) {
            auto unitmask = reinterpret_cast(lParam)->dbcv_unitmask;
            for (int i = 0; i < 32; ++i) {
                if ((unitmask & (1 << i)) != 0) {
                    setDriveChanged('A' + i, wParam == DBT_DEVICEARRIVAL);
                }
            }
        }
    }
    return false;
}