using System;
using System.Collections.Generic;
using System.Text;
using System.Runtime.InteropServices;

namespace Hardware
{
/// <summary>
/// 下列所需函数可参考MSDN中与驱动程序相关的API函数
/// </summary>
public class Externs
{
public const int DIGCF_ALLCLASSES = ( 0x00000004);
public const int DIGCF_PRESENT = ( 0x00000002);
public const int INVALID_HANDLE_VALUE = - 1;
public const int SPDRP_DEVICEDESC = ( 0x00000000);
public const int MAX_DEV_LEN = 1000;
public const int DEVICE_NOTIFY_WINDOW_HANDLE = ( 0x00000000);
public const int DEVICE_NOTIFY_SERVICE_HANDLE = ( 0x00000001);
public const int DEVICE_NOTIFY_ALL_INTERFACE_CLASSES = ( 0x00000004);
public const int DBT_DEVTYP_DEVICEINTERFACE = ( 0x00000005);
public const int DBT_DEVNODES_CHANGED = ( 0x0007);
public const int WM_DEVICECHANGE = ( 0x0219);
public const int DIF_PROPERTYCHANGE = ( 0x00000012);
public const int DICS_FLAG_GLOBAL = ( 0x00000001);
public const int DICS_FLAG_CONFIGSPECIFIC = ( 0x00000002);
public const int DICS_ENABLE = ( 0x00000001);
public const int DICS_DISABLE = ( 0x00000002);

/// <summary>
/// 注册设备或者设备类型，在指定的窗口返回相关的信息
/// </summary>
/// <param name="hRecipient"></param>
/// <param name="NotificationFilter"></param>
/// <param name="Flags"></param>
/// <returns></returns>
[DllImport( " user32.dll ", CharSet = CharSet.Auto)]
public static extern IntPtr RegisterDeviceNotification(IntPtr hRecipient, DEV_BROADCAST_DEVICEINTERFACE NotificationFilter, UInt32 Flags);

/// <summary>
/// 通过名柄，关闭指定设备的信息。
/// </summary>
/// <param name="hHandle"></param>
/// <returns></returns>
[DllImport( " user32.dll ", CharSet = CharSet.Auto)]
public static extern uint UnregisterDeviceNotification(IntPtr hHandle);

/// <summary>
/// 获取一个指定类别或全部类别的所有已安装设备的信息
/// </summary>
/// <param name="gClass"></param>
/// <param name="iEnumerator"></param>
/// <param name="hParent"></param>
/// <param name="nFlags"></param>
/// <returns></returns>
[DllImport( " setupapi.dll ", SetLastError = true)]
public static extern IntPtr SetupDiGetClassDevs( ref Guid gClass, UInt32 iEnumerator, IntPtr hParent, UInt32 nFlags);

/// <summary>
/// 销毁一个设备信息集合，并且释放所有关联的内存
/// </summary>
/// <param name="lpInfoSet"></param>
/// <returns></returns>
[DllImport( " setupapi.dll ", SetLastError = true)]
public static extern int SetupDiDestroyDeviceInfoList(IntPtr lpInfoSet);

/// <summary>
/// 枚举指定设备信息集合的成员，并将数据放在SP_DEVINFO_DATA中
/// </summary>
/// <param name="lpInfoSet"></param>
/// <param name="dwIndex"></param>
/// <param name="devInfoData"></param>
/// <returns></returns>
[DllImport( " setupapi.dll ", SetLastError = true)]
public static extern bool SetupDiEnumDeviceInfo(IntPtr lpInfoSet, UInt32 dwIndex, SP_DEVINFO_DATA devInfoData);

/// <summary>
/// 获取指定设备的属性
/// </summary>
/// <param name="lpInfoSet"></param>
/// <param name="DeviceInfoData"></param>
/// <param name="Property"></param>
/// <param name="PropertyRegDataType"></param>
/// <param name="PropertyBuffer"></param>
/// <param name="PropertyBufferSize"></param>
/// <param name="RequiredSize"></param>
/// <returns></returns>
[DllImport( " setupapi.dll ", SetLastError = true)]
public static extern bool SetupDiGetDeviceRegistryProperty(IntPtr lpInfoSet, SP_DEVINFO_DATA DeviceInfoData, UInt32 Property, UInt32 PropertyRegDataType, StringBuilder PropertyBuffer, UInt32 PropertyBufferSize, IntPtr RequiredSize);

/// <summary>
/// 停用设备
/// </summary>
/// <param name="DeviceInfoSet"></param>
/// <param name="DeviceInfoData"></param>
/// <param name="ClassInstallParams"></param>
/// <param name="ClassInstallParamsSize"></param>
/// <returns></returns>
[DllImport( " setupapi.dll ", SetLastError = true, CharSet = CharSet.Auto)]
public static extern bool SetupDiSetClassInstallParams(IntPtr DeviceInfoSet, IntPtr DeviceInfoData, IntPtr ClassInstallParams, int ClassInstallParamsSize);

/// <summary>
/// 启用设备
/// </summary>
/// <param name="InstallFunction"></param>
/// <param name="DeviceInfoSet"></param>
/// <param name="DeviceInfoData"></param>
/// <returns></returns>
[DllImport( " setupapi.dll ", CharSet = CharSet.Auto)]
public static extern Boolean SetupDiCallClassInstaller(UInt32 InstallFunction, IntPtr DeviceInfoSet, IntPtr DeviceInfoData);

/// <summary>
/// RegisterDeviceNotification所需参数
/// </summary>
[StructLayout(LayoutKind.Sequential)]
public struct DEV_BROADCAST_HANDLE
{
public int dbch_size;
public int dbch_devicetype;
public int dbch_reserved;
public IntPtr dbch_handle;
public IntPtr dbch_hdevnotify;
public Guid dbch_eventguid;
public long dbch_nameoffset;
public byte dbch_data;
public byte dbch_data1;
}

// WM_DEVICECHANGE message
[StructLayout(LayoutKind.Sequential)]
public class DEV_BROADCAST_DEVICEINTERFACE
{
public int dbcc_size;
public int dbcc_devicetype;
public int dbcc_reserved;
}

/// <summary>
/// 设备信息数据
/// </summary>
[StructLayout(LayoutKind.Sequential)]
public class SP_DEVINFO_DATA
{
public int cbSize;
public Guid classGuid;
public int devInst;
public ulong reserved;
};

/// <summary>
/// 属性变更参数
/// </summary>
[StructLayout(LayoutKind.Sequential)]
public class SP_PROPCHANGE_PARAMS
{
public SP_CLASSINSTALL_HEADER ClassInstallHeader = new SP_CLASSINSTALL_HEADER();
public int StateChange;
public int Scope;
public int HwProfile;
};

/// <summary>
/// 设备安装
/// </summary>
[StructLayout(LayoutKind.Sequential)]
public class SP_DEVINSTALL_PARAMS
{
public int cbSize;
public int Flags;
public int FlagsEx;
public IntPtr hwndParent;
public IntPtr InstallMsgHandler;
public IntPtr InstallMsgHandlerContext;
public IntPtr FileQueue;
public IntPtr ClassInstallReserved;
public int Reserved;
[MarshalAs(UnmanagedType.LPTStr)]
public string DriverPath;
};

[StructLayout(LayoutKind.Sequential)]
public class SP_CLASSINSTALL_HEADER
{
public int cbSize;
public int InstallFunction;
};
}
}