[心得] [C#] 偵測(Detection)USB的插入(Insert)以及HID的插入和拔除(Remove)

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電梯直達

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發表於 2023-7-8 13:11:28 |只看該作者 |倒序瀏覽

要修改偵測裝置或是增加可以修改這兩行
USB為GUID_DEVINTERFACE_USB_DEVICE = new Guid("A5DCBF10-6530-11D2-901F-00C04FB951ED");
HID為GUID_DEVINTERFACE_HID = new Guid("4D1E55B2-F16F-11CF-88CB-001111000030");

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.windows.Forms;
using System.Runtime.InteropServices;
namespace WindowsFormsApplication3
{
//public partial class Form1 : Form
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
RegisterHidNotification();
}
protected override void WndProc(ref Message m)
{
switch (m.Msg)
{
case Win32.WM_DEVICECHANGE:
OnDeviceChange(ref m);
break;
}
base.WndProc(ref m);
}
void OnDeviceChange(ref Message msg)
{
int wParam = (int)msg.WParam;
if (wParam == Win32.DBT_DEVICEARRIVAL)
label1.Text = "Arrival";
else if (wParam == Win32.DBT_DEVICEREMOVECOMPLETE)
label1.Text = "Remove";
}
void RegisterHidNotification()
{
Win32.DEV_BROADCAST_DEVICEINTERFACE dbi = new Win32.DEV_BROADCAST_DEVICEINTERFACE();
int size = Marshal.SizeOf(dbi);
dbi.dbcc_size = size;
dbi.dbcc_devicetype = Win32.DBT_DEVTYP_DEVICEINTERFACE;
dbi.dbcc_reserved = 0;
dbi.dbcc_classguid = Win32.GUID_DEVINTERFACE_HID;
dbi.dbcc_name = 0;
IntPtr buffer = Marshal.AllocHGlobal(size);
Marshal.StructureToPtr(dbi, buffer, true);
IntPtr r = Win32.RegisterDeviceNotification(Handle, buffer, Win32.DEVICE_NOTIFY_WINDOW_HANDLE);
if (r == IntPtr.Zero)
label1.Text = Win32.GetLastError().ToString();
}
}
class Win32
{
public const int WM_DEVICECHANGE = 0x0219;
public const int DBT_DEVICEARRIVAL = 0x8000;
public const int DBT_DEVICEREMOVECOMPLETE = 0x8004;
public const int DEVICE_NOTIFY_WINDOW_HANDLE = 0;
public const int DEVICE_NOTIFY_SERVICE_HANDLE = 1;
public const int DBT_DEVTYP_DEVICEINTERFACE = 5;
public static Guid GUID_DEVINTERFACE_HID = new Guid("4D1E55B2-F16F-11CF-88CB-001111000030");
public static Guid GUID_DEVINTERFACE_USB_DEVICE = new Guid("A5DCBF10-6530-11D2-901F-00C04FB951ED");
[StructLayout(LayoutKind.Sequential)]
public class DEV_BROADCAST_DEVICEINTERFACE
{
public int dbcc_size;
public int dbcc_devicetype;
public int dbcc_reserved;
public Guid dbcc_classguid;
public short dbcc_name;
}
[DllImport("user32.dll", SetLastError = true)]
public static extern IntPtr RegisterDeviceNotification(IntPtr hRecipient, IntPtr NotificationFilter, Int32 Flags);
[DllImport("kernel32.dll")]
public static extern int GetLastError();
}
}