Windows系统下Qt获取U盘设备实例路径的方法

#ifdef Q_OS_WIN
#include <windows.h>
#include <setupapi.h>
#include <cfgmgr32.h>
#include <devguid.h>
#pragma comment(lib, "setupapi.lib")

QStringList getUsbPhysicalPaths() {
    QStringList usbPaths;
    HDEVINFO hDevInfo = SetupDiGetClassDevs(&GUID_DEVINTERFACE_DISK, 0, 0, DIGCF_PRESENT | DIGCF_DEVICEINTERFACE);
    if (hDevInfo == INVALID_HANDLE_VALUE) return usbPaths;

    SP_DEVICE_INTERFACE_DATA devInterfaceData = {0};
    devInterfaceData.cbSize = sizeof(SP_DEVICE_INTERFACE_DATA);

    for (DWORD i = 0; SetupDiEnumDeviceInterfaces(hDevInfo, NULL, &GUID_DEVINTERFACE_DISK, i, &devInterfaceData); i++) {
        DWORD requiredSize = 0;
        SetupDiGetDeviceInterfaceDetail(hDevInfo, &devInterfaceData, NULL, 0, &requiredSize, NULL);

        PSP_DEVICE_INTERFACE_DETAIL_DATA_W pDetail = (PSP_DEVICE_INTERFACE_DETAIL_DATA_W)malloc(requiredSize);
        pDetail->cbSize = sizeof(SP_DEVICE_INTERFACE_DETAIL_DATA_W);

        SP_DEVINFO_DATA devInfoData = {0};
        devInfoData.cbSize = sizeof(SP_DEVINFO_DATA);

        if (SetupDiGetDeviceInterfaceDetail(hDevInfo, &devInterfaceData, pDetail, requiredSize, NULL, &devInfoData)) {
            // 获取设备实例路径
            wchar_t instanceId[MAX_DEVICE_ID_LEN];
            CM_Get_Device_IDW(devInfoData.DevInst, instanceId, MAX_DEVICE_ID_LEN, 0);
            QString path = QString::fromWCharArray(instanceId);
            if (path.contains("USBSTOR", Qt::CaseInsensitive)) {
                usbPaths.append(QString::fromWCharArray(pDetail->DevicePath));
            }
        }
        free(pDetail);
    }
    SetupDiDestroyDeviceInfoList(hDevInfo);
    return usbPaths;
}
#endif