using System; using System.Collections.Generic; using System.IO; using System.Linq; using System.Runtime.InteropServices; using System.Text; using System.Threading.Tasks; using System.Windows; using System.Windows.Controls; using System.Windows.Data; using System.Windows.Documents; using System.Windows.Input; using System.Windows.Interop; using System.Windows.Media; using System.Windows.Media.Imaging; using System.Windows.Shapes; namespace Wpf_DataGrid_RowDragAndDrop { ////// WinUpan.xaml 的交互邏輯 /// public partial class WinUpan : Window { public WinUpan() { InitializeComponent(); } private void Window_Loaded(object sender, RoutedEventArgs e) { /*WPF中處理消息首先要獲取窗口句柄,創建HwndSource對象 通過HwndSource對象添加 * 消息處理回調函數.HwndSource類: 實現其自己的窗口過程。 創建窗口之後使用 AddHook * 和 RemoveHook 來添加和移除掛鉤,接收所有窗口消息。*/ HwndSource hwndSource = PresentationSource.FromVisual(this) as HwndSource;//窗口過程 if (hwndSource != null) { hwndSource.AddHook(new HwndSourceHook(WndProc));//掛鉤 } } string panfu = ""; public const int WM_DEVICECHANGE = 0x219;//U盤插入後,OS的底層會自動檢測到,然後向應用程序發送“硬件設備狀態改變“的消息 public const int DBT_DEVICEARRIVAL = 0x8000; //就是用來表示U盤可用的。一個設備或媒體已被插入一塊,現在可用。 public const int DBT_CONFIGCHANGECANCELED = 0x0019; //要求更改當前的配置(或取消停靠碼頭)已被取消。 public const int DBT_CONFIGCHANGED = 0x0018; //當前的配置發生了變化,由於碼頭或取消固定。 public const int DBT_CUSTOMEVENT = 0x8006; //自定義的事件發生。 的Windows NT 4.0和Windows 95:此值不支持。 public const int DBT_DEVICEQUERYREMOVE = 0x8001; //審批要求刪除一個設備或媒體作品。任何應用程序也不能否認這一要求,並取消刪除。 public const int DBT_DEVICEQUERYREMOVEFAILED = 0x8002; //請求刪除一個設備或媒體片已被取消。 public const int DBT_DEVICEREMOVECOMPLETE = 0x8004; //一個設備或媒體片已被刪除。 public const int DBT_DEVICEREMOVEPENDING = 0x8003; //一個設備或媒體一塊即將被刪除。不能否認的。 public const int DBT_DEVICETYPESPECIFIC = 0x8005; //一個設備特定事件發生。 public const int DBT_DEVNODES_CHANGED = 0x0007; //一種設備已被添加到或從系統中刪除。 public const int DBT_QUERYCHANGECONFIG = 0x0017; //許可是要求改變目前的配置(碼頭或取消固定)。 public const int DBT_USERDEFINED = 0xFFFF; //此消息的含義是用戶定義的 public const uint GENERIC_READ = 0x80000000; public const int GENERIC_WRITE = 0x40000000; public const int FILE_SHARE_READ = 0x1; public const int FILE_SHARE_WRITE = 0x2; public const int IOCTL_STORAGE_EJECT_MEDIA = 0x2d4808; private IntPtr WndProc(IntPtr hwnd, int msg, IntPtr wParam, IntPtr lParam, ref bool handled) { if (msg == WM_DEVICECHANGE) { switch (wParam.ToInt32()) { case DBT_DEVICEARRIVAL: DriveInfo[] s = DriveInfo.GetDrives(); s.Any(t => { if (t.DriveType == DriveType.Removable) { panfu = t.Name; MessageBox.Show("U盤插入,盤符為:" + t.Name); DirSearch(t.RootDirectory.FullName); return true; } return false; }); break; case DBT_DEVICEREMOVECOMPLETE: MessageBox.Show("U盤卸載"); break; default: break; } } return IntPtr.Zero; } private void DirSearch(string path) { try { foreach (string f in Directory.GetFiles(path)) { listview.Items.Add(f); } foreach (string d in Directory.GetDirectories(path)) { DirSearch(d); } } catch (Exception) { throw; } } private void Button_Click(object sender, RoutedEventArgs e) { //第一個參數filename與普通文件名有所不同,設備驅動的“文件名”(常稱為“設備路徑”)形式固定為“\\.\DeviceName”, 如 string filename = @"\\.\I:"; string filename = @"\\.\" + panfu.Remove(2); //打開設備,得到設備的句柄handle. IntPtr handle = CreateFile(filename, GENERIC_READ | GENERIC_WRITE, FILE_SHARE_READ | FILE_SHARE_WRITE, IntPtr.Zero, 0x3, 0, IntPtr.Zero); // 向目標設備發送設備控制碼,也就是發送命令。IOCTL_STORAGE_EJECT_MEDIA 彈出U盤。 uint byteReturned; bool result = DeviceIoControl(handle, IOCTL_STORAGE_EJECT_MEDIA, IntPtr.Zero, 0, IntPtr.Zero, 0, out byteReturned, IntPtr.Zero); MessageBox.Show(result ? "U盤已退出" : "U盤退出失敗"); } [DllImport("kernel32.dll", SetLastError = true, CharSet = CharSet.Auto)] private static extern IntPtr CreateFile( string lpFileName, uint dwDesireAccess, uint dwShareMode, IntPtr SecurityAttributes, uint dwCreationDisposition, uint dwFlagsAndAttributes, IntPtr hTemplateFile); [DllImport("kernel32.dll", ExactSpelling = true, SetLastError = true, CharSet = CharSet.Auto)] private static extern bool DeviceIoControl( IntPtr hDevice, uint dwIoControlCode, IntPtr lpInBuffer, uint nInBufferSize, IntPtr lpOutBuffer, uint nOutBufferSize, out uint lpBytesReturned, IntPtr lpOverlapped ); } }