Qt5在Windows环境检测U盘

#include "mainwindow.h" #include "ui_mainwindow.h" #include <QDebug> MainWindow::MainWindow(QWidget *parent) : QMainWindow(parent), ui(new Ui::MainWindow) { ui->setupUi(this); } MainWindow::~MainWindow() { delete ui; } char MainWindow::FirstDriveFromMask(ULONG unitmask) { char i; for (i = 0; i < 26; ++i) { if (unitmask & 0x1) break; unitmask = unitmask >> 1; } return (i + 'A'); } bool MainWindow::nativeEvent(const QByteArray &eventType, void *message, long *result) { MSG* msg = reinterpret_cast<MSG*>(message); int msgType = msg->message; if(msgType==WM_DEVICECHANGE) { PDEV_BROADCAST_HDR lpdb = (PDEV_BROADCAST_HDR)msg->lParam; switch (msg->wParam) { case DBT_DEVICEARRIVAL: if(lpdb->dbch_devicetype == DBT_DEVTYP_VOLUME) { PDEV_BROADCAST_VOLUME lpdbv = (PDEV_BROADCAST_VOLUME)lpdb; if(lpdbv->dbcv_flags ==0) { QString USBDisk = QString(this->FirstDriveFromMask(lpdbv ->dbcv_unitmask)); qDebug() << "USB_Arrived and The USBDisk is: "<<USBDisk ; } } break; case DBT_DEVICEREMOVECOMPLETE: if(lpdb->dbch_devicetype == DBT_DEVTYP_VOLUME) { PDEV_BROADCAST_VOLUME lpdbv = (PDEV_BROADCAST_VOLUME)lpdb; if(lpdbv->dbcv_flags == 0) { qDebug() << "USB_Removed"; } } break; } } return false; }