C# 2005 e a Plataforma .NET 2.0 - Ativando e Desativando Device com Win32Device (API)
Programa que demosntra como listar, ativar e desativar um device, através de chamada API win32.
Programa.cs
using System;
using System.Collections.Generic;
using System.Text;
using System.Runtime.InteropServices;
namespace DeviceInterfaceConsole
{
class Program
{
public const int DIGCF_PRESENT = 2;
public const int DIF_PROPERTYCHANGE = 0x00000012;
public const int DICS_FLAG_GLOBAL = 0x00000001;
public const int INVALID_HANDLE_VALUE = -1;
public const int DICS_ENABLE = 0x00000001;
public const int DICS_DISABLE = 0x00000002;
public const string USBVIDPID = @"USB\VID_0403&PID_6001\A1000PRA";
[StructLayout(LayoutKind.Sequential)]
public struct SP_DEVINFO_DATA
{
public int cbSize;
public Guid ClassGuid;
public int DevInst;
public int Reserved;
}
[StructLayout(LayoutKind.Sequential)]
public struct SP_CLASSINSTALL_HEADER
{
public int cbSize;
public int InstallFunction;
}
[StructLayout(LayoutKind.Sequential)]
public struct SP_PROPCHANGE_PARAMS
{
public SP_CLASSINSTALL_HEADER ClassInstallHeader;
public int StateChange;
public int Scope;
public int HwProfile;
public void Init()
{
ClassInstallHeader = new SP_CLASSINSTALL_HEADER();
}
}
[DllImport("setupapi.dll")]
internal static extern IntPtr SetupDiGetClassDevs(
ref Guid ClassGuid,
IntPtr Enumerator,
IntPtr hWndParent,
int Flags);
[DllImport("setupapi.dll")]
public static extern bool SetupDiEnumDeviceInfo(
IntPtr DeviceInfoSet,
int Supplies,
ref SP_DEVINFO_DATA DeviceInfoData);
[DllImport("setupapi.dll")]
public static extern bool SetupDiDestroyDeviceInfoList(IntPtr DeviceInfoSet);
[DllImport("setupapi.dll")]
public static extern bool SetupDiSetClassInstallParams(
IntPtr DeviceInfoSet,
ref SP_DEVINFO_DATA DeviceInfoData,
ref SP_CLASSINSTALL_HEADER ClassInstallParams,
int ClassInstallParamsSize);
[DllImport("setupapi.dll")]
public static extern bool SetupDiCallClassInstaller(
int InstallFunction,
IntPtr DeviceInfoSet,
ref SP_DEVINFO_DATA DeviceInfoData);
private static IntPtr hDevInfo = (IntPtr)0;
static void Main(string[] args)
{
GetAllDeviceClasses(0); // Desativar o Device
GetAllDeviceClasses(1); // Ativar o Device
}
static void GetAllDeviceClasses(int opc)
{
IntPtr classGuid = IntPtr.Zero;
String strEnumerator = null;
IntPtr hwndParent = IntPtr.Zero;
Int32 flags = Win32DeviceMgmt.DIGCF_ALLCLASSES;
IntPtr pDevInfoSet = IntPtr.Zero;
IntPtr pNewDevInfoSet = IntPtr.Zero;
String strMachineName = null;
pNewDevInfoSet = Win32DeviceMgmt.SetupDiGetClassDevsEx(classGuid,
strEnumerator,
hwndParent,
flags,
pDevInfoSet,
strMachineName,
IntPtr.Zero);
if (pNewDevInfoSet == IntPtr.Zero)
{
Console.WriteLine("Failed to get device information list");
return;
}
Int32 iRet;
Int32 iMemberIndex = 0;
do
{
Win32DeviceMgmt.SP_DEVINFO_DATA devInfoData = new Win32DeviceMgmt.SP_DEVINFO_DATA();
devInfoData.cbSize = 28;
devInfoData.ClassGuid = Guid.Empty;
devInfoData.DevInst = 0;
devInfoData.Reserved = UIntPtr.Zero;
iRet = Win32DeviceMgmt.SetupDiEnumDeviceInfo(pNewDevInfoSet, iMemberIndex, ref devInfoData);
if (iRet == 0)
{
Int32 iLastError = Win32DeviceMgmt.GetLastError();
if (iLastError == Win32DeviceMgmt.ERROR_NO_MORE_FILES)
{
Console.WriteLine("No more devices in list");
Console.WriteLine("***********************");
break;
}
else
{
iMemberIndex++;
continue;
}
}
Console.WriteLine("Device: ", iMemberIndex);
Console.WriteLine("\tGuid=", devInfoData.ClassGuid);
Console.WriteLine("\tName=", GetClassNameFromGuid(devInfoData.ClassGuid));
Console.WriteLine("\tDescription=", GetClassDescriptionFromGuid(devInfoData.ClassGuid));
Console.WriteLine("\tInstance Id=", GetDeviceInstanceId(pNewDevInfoSet, devInfoData));
if (GetDeviceInstanceId(pNewDevInfoSet, devInfoData) == USBVIDPID)
{
if (opc == 0)
{
DisableNetAdapter(pNewDevInfoSet, iMemberIndex);
}
else
{
EnableNetAdapter(pNewDevInfoSet, iMemberIndex);
}
break;
}
iMemberIndex++;
} while (true);
Win32DeviceMgmt.SetupDiDestroyDeviceInfoList(pNewDevInfoSet);
}
static String GetClassNameFromGuid(Guid guid)
{
StringBuilder strClassName = new StringBuilder(0);
Int32 iRequiredSize = 0;
Int32 iSize = 0;
Int32 iRet = Win32DeviceMgmt.SetupDiClassNameFromGuid(ref guid, strClassName, iSize, ref iRequiredSize);
strClassName = new StringBuilder(iRequiredSize);
iSize = iRequiredSize;
iRet = Win32DeviceMgmt.SetupDiClassNameFromGuid(ref guid, strClassName, iSize, ref iRequiredSize);
if (iRet == 1)
{
return strClassName.ToString();
}
return String.Empty;
}
static String GetClassDescriptionFromGuid(Guid guid)
{
StringBuilder strClassDesc = new StringBuilder(0);
Int32 iRequiredSize = 0;
Int32 iSize = 0;
Int32 iRet = Win32DeviceMgmt.SetupDiGetClassDescription(ref guid, strClassDesc, iSize, ref iRequiredSize);
strClassDesc = new StringBuilder(iRequiredSize);
iSize = iRequiredSize;
iRet = Win32DeviceMgmt.SetupDiGetClassDescription(ref guid, strClassDesc, iSize, ref iRequiredSize);
if (iRet == 1)
{
return strClassDesc.ToString();
}
return String.Empty;
}
static String GetDeviceInstanceId(IntPtr DeviceInfoSet, Win32DeviceMgmt.SP_DEVINFO_DATA DeviceInfoData)
{
StringBuilder strId = new StringBuilder(0);
Int32 iRequiredSize = 0;
Int32 iSize = 0;
Int32 iRet = Win32DeviceMgmt.SetupDiGetDeviceInstanceId(DeviceInfoSet,
ref DeviceInfoData,
strId,
iSize,
ref iRequiredSize);
strId = new StringBuilder(iRequiredSize);
iSize = iRequiredSize;
iRet = Win32DeviceMgmt.SetupDiGetDeviceInstanceId(DeviceInfoSet, ref DeviceInfoData, strId, iSize, ref iRequiredSize);
if (iRet == 1)
{
return strId.ToString();
}
return String.Empty;
}
static bool StateChange(int NewState, int SelectedItem, IntPtr hDevInfo)
{
SP_PROPCHANGE_PARAMS PropChangeParams;
SP_DEVINFO_DATA DeviceInfoData;
PropChangeParams = new SP_PROPCHANGE_PARAMS();
PropChangeParams.Init();
DeviceInfoData = new SP_DEVINFO_DATA();
PropChangeParams.ClassInstallHeader.cbSize
= Marshal.SizeOf(PropChangeParams.ClassInstallHeader);
DeviceInfoData.cbSize = Marshal.SizeOf(DeviceInfoData);
if (!SetupDiEnumDeviceInfo(hDevInfo, SelectedItem, ref DeviceInfoData))
return false;
PropChangeParams.ClassInstallHeader.InstallFunction = DIF_PROPERTYCHANGE;
PropChangeParams.Scope = DICS_FLAG_GLOBAL;
PropChangeParams.StateChange = NewState;
if (!SetupDiSetClassInstallParams(
hDevInfo,
ref DeviceInfoData,
ref PropChangeParams.ClassInstallHeader,
Marshal.SizeOf(PropChangeParams)))
return false;
if (!SetupDiCallClassInstaller(
DIF_PROPERTYCHANGE,
hDevInfo,
ref DeviceInfoData))
return false;
return true;
}
static bool DisableNetAdapter(IntPtr hdi, int adapterNumber)
{
if (hdi == (IntPtr)INVALID_HANDLE_VALUE)
return false;
bool res = StateChange(DICS_DISABLE, adapterNumber, hdi);
SetupDiDestroyDeviceInfoList(hdi);
return res;
}
static bool EnableNetAdapter(IntPtr hdi, int adapterNumber)
{
if (hdi == (IntPtr)INVALID_HANDLE_VALUE)
return false;
bool res = StateChange(DICS_ENABLE, adapterNumber, hdi);
SetupDiDestroyDeviceInfoList(hdi);
return res;
}
}
}
Win32Device.cs
using System;
using System.Text;
using System.Runtime.InteropServices;
namespace DeviceInterfaceConsole
{
public class Win32DeviceMgmt
{
internal static Int32 ERROR_NO_MORE_FILES = 259;
internal static Int32 LINE_LEN = 256;
internal static Int32 DIGCF_DEFAULT = 0x00000001; // only valid with DIGCF_DEVICEINTERFACE
internal static Int32 DIGCF_PRESENT = 0x00000002;
internal static Int32 DIGCF_ALLCLASSES = 0x00000004;
internal static Int32 DIGCF_PROFILE = 0x00000008;
internal static Int32 DIGCF_DEVICEINTERFACE = 0x00000010;
internal static Int32 SPINT_ACTIVE = 0x00000001;
internal static Int32 SPINT_DEFAULT = 0x00000002;
internal static Int32 SPINT_REMOVED = 0x00000004;
[StructLayout(LayoutKind.Sequential)]
internal struct SP_DEVINFO_DATA
{
public Int32 cbSize;
public Guid ClassGuid;
public Int32 DevInst;
public UIntPtr Reserved;
};
[StructLayout(LayoutKind.Sequential)]
internal struct SP_DEVICE_INTERFACE_DATA
{
public Int32 cbSize;
public Guid InterfaceClassGuid;
public Int32 Flags;
public IntPtr Reserved;
};
[StructLayout(LayoutKind.Sequential)]
internal struct SP_DRVINFO_DATA
{
public Int32 cbSize;
public Int32 DriverType;
public UIntPtr Reserved;
[MarshalAs(UnmanagedType.ByValTStr, SizeConst=256)]
public String Description;
[MarshalAs(UnmanagedType.ByValTStr, SizeConst=256)]
public String MfgName;
[MarshalAs(UnmanagedType.ByValTStr, SizeConst=256)]
public String ProviderName;
public FILETIME DriverDate;
public Int64 DriverVersion;
};
[DllImport("setupapi.dll")]
internal static extern IntPtr SetupDiGetClassDevsEx(IntPtr ClassGuid,
[MarshalAs(UnmanagedType.LPStr)]String enumerator,
IntPtr hwndParent,
Int32 Flags,
IntPtr DeviceInfoSet,
[MarshalAs(UnmanagedType.LPStr)]String MachineName,
IntPtr Reserved);
[DllImport("setupapi.dll")]
internal static extern Int32 SetupDiDestroyDeviceInfoList(IntPtr DeviceInfoSet);
[DllImport("setupapi.dll")]
internal static extern Int32 SetupDiEnumDeviceInterfaces(IntPtr DeviceInfoSet, IntPtr DeviceInfoData, IntPtr InterfaceClassGuid, Int32 MemberIndex, ref SP_DEVINFO_DATA DeviceInterfaceData);
[DllImport("setupapi.dll")]
internal static extern Int32 SetupDiEnumDeviceInfo(IntPtr DeviceInfoSet, Int32 MemberIndex, ref SP_DEVINFO_DATA DeviceInterfaceData);
[DllImport("setupapi.dll")]
internal static extern Int32 SetupDiClassNameFromGuid(ref Guid ClassGuid, StringBuilder className, Int32 ClassNameSize, ref Int32 RequiredSize);
[DllImport("setupapi.dll")]
internal static extern Int32 SetupDiGetClassDescription(ref Guid ClassGuid, StringBuilder classDescription, Int32 ClassDescriptionSize, ref Int32 RequiredSize);
[DllImport("setupapi.dll")]
internal static extern Int32 SetupDiGetDeviceInstanceId(IntPtr DeviceInfoSet, ref SP_DEVINFO_DATA DeviceInfoData, StringBuilder DeviceInstanceId, Int32 DeviceInstanceIdSize, ref Int32 RequiredSize);
[DllImport("kernel32.dll")]
internal static extern Int32 GetLastError();
}
}