QT 监听 USB 设备 插入、拔出动作

参考网上资料，通过QT 实现监听 USB 设备 插入、拔出动作

#ifndef WIDGET_H
#define WIDGET_H
 
#include <QtGui/QWidget>

#include <windows.h>
#include <QString>
 
class Widget : public QWidget
{
 Q_OBJECT
 
public:
 Widget(QWidget *parent = 0);
 ~Widget();
 
protected:
 bool winEvent(MSG *msg, long *result);
 
private:
 //UsbConfig usbConfig;
 char FirstDriveFromMask (ULONG unitmask);
};
 
#endif // WIDGET_H

---------------------------

#include "qt_Watch/qwidget.h"
#include <QDebug>

#include <Windows.h>
#include <dbt.h>

Widget::Widget(QWidget *parent)
 : QWidget(parent)
{
 setWindowFlags(Qt::Window);    //窗口以Window为父窗口
}

Widget::~Widget()
{
}

bool Widget::winEvent(MSG *msg,long *result)
{
 int msgType = msg->message;
 if(msgType == WM_DEVICECHANGE)
 {
  qDebug() << "收到事件 " ;
  PDEV_BROADCAST_HDR lpdb = (PDEV_BROADCAST_HDR)msg->lParam;
  switch(msg->wParam)
  {
  case DBT_DEVICETYPESPECIFIC:
   {
    qDebug() << "DBT_DEVICETYPESPECIFIC " ;
    break;
   }
  case DBT_DEVICEARRIVAL:
   if (lpdb -> dbch_devicetype == DBT_DEVTYP_VOLUME)
   {
    PDEV_BROADCAST_VOLUME lpdbv = (PDEV_BROADCAST_VOLUME)lpdb;
    if (lpdbv -> dbcv_flags == 0)
    {
     // 插入U盘，此处可以做你想做的事
     QString USBDisk = QString(this->FirstDriveFromMask(lpdbv ->dbcv_unitmask));
     qDebug() << "USB_Arrived and The USBDisk is: "<<USBDisk ;
    }
   }
   qDebug() << "DBT_DEVICEARRIVAL" ;
   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_设备移除";
    }
   }
   qDebug() << "DBT_DEVICEREMOVECOMPLETE" ;
   break;
  }
 }
 return false;
}

char Widget::FirstDriveFromMask (ULONG unitmask)
{
 char i;

 for (i = 0; i < 26; ++i)
 {
  if (unitmask & 0x1)
   break;
  unitmask = unitmask >> 1;
 }
 return (i + 'A');
}

-------------------------

#include <QApplication>
#include "qt_Watch/qwidget.h"

int main(int argc,char ** argv)
{
 QApplication app(argc,argv);

 Widget widget;
 widget.show();

 return app.exec();
}

Ubuntu 环境下Gtk与QT编译环境安装与配置 http://www.linuxidc.com/Linux/2013-08/88539.htm

Linux系统下QT环境搭建 http://www.linuxidc.com/Linux/2013-07/87576.htm

Ubuntu下QT控制台程序无法运行的解决方案以及XTerm的配置方法 http://www.linuxidc.com/Linux/2013-06/86244.htm

Ubuntu 10.04下QT4.7.4移植详解 http://www.linuxidc.com/Linux/2013-01/77930.htm

Ubuntu 14.04下安装部署Qt5开发环境 http://www.linuxidc.com/Linux/2014-05/101774.htm