static public bool RemoveDevices(uint Instance)
{
int DN_REMOVABLE = 0x00004000;
int CR_SUCCESS = 0;
uint status = 0;
uint problem = 0;
bool success = false;
if (CR_SUCCESS == SetupAPI.CM_Get_DevNode_Status(out status, out problem, Instance, 0) && (DN_REMOVABLE & status) > 0)
{
SetupAPI.PNP_VETO_TYPE pnp_veto_type;
System.Text.StringBuilder sb = new System.Text.StringBuilder(255);
success = (CR_SUCCESS == SetupAPI.CM_Request_Device_Eject(Instance, out pnp_veto_type, sb, sb.Capacity, 0));
}
return(success);
}
/// <summary>
/// Get a list of all known devices of a given class, optionally only selecting devices
/// that are physically present at the time of the call.
///
/// Throws a System.ComponentModel.Win32Exception on any Windows API error
/// </summary>
/// <param name="DeviceClassGUID">GUID of device class to enumerate. May be a value from
/// GUID_DEVINTERFACE, any other known device class GUID, or Guid.Empty to find all USB devices.</param>
/// <param name="Present">TRUE if only present (conencted) devices should be returned</param>
/// <returns>List of all found devices</returns>
static public List <DeviceInfo> GetDevices(Guid DeviceClassGUID, Boolean Present = true)
{
List <DeviceInfo> Devices = new List <DeviceInfo>();
if (DeviceClassGUID == Guid.Empty)
{
DeviceClassGUID = GUID_DEVINTERFACE.GUID_DEVINTERFACE_USB_DEVICE;
}
IntPtr deviceList = IntPtr.Zero;
int Flags = (Present ? (int)SetupAPI.DiGetClassFlags.DIGCF_PRESENT : 0);
Flags = Flags | (int)SetupAPI.DiGetClassFlags.DIGCF_DEVICEINTERFACE;
deviceList = SetupAPI.SetupDiGetClassDevs(ref DeviceClassGUID, IntPtr.Zero, IntPtr.Zero, Flags);
if (deviceList.ToInt64() == SetupAPI.INVALID_HANDLE_VALUE)
{
throw new Win32Exception();
}
SetupAPI.SP_DEVINFO_DATA DevInfo = new SetupAPI.SP_DEVINFO_DATA();
DevInfo.cbSize = (uint)Marshal.SizeOf(DevInfo);
uint DeviceIndex = 0;
while (SetupAPI.SetupDiEnumDeviceInfo(deviceList, DeviceIndex, ref DevInfo))
{
String DevID = SetupAPI.GetDeviceID(DevInfo);
if (String.IsNullOrEmpty(DevID))
{
throw new Win32Exception();
}
SetupAPI.SP_DEVINFO_DATA IntInfo = new SetupAPI.SP_DEVINFO_DATA();
IntInfo.cbSize = (uint)Marshal.SizeOf(IntInfo);
uint InterfaceIndex = 0;
while (SetupAPI.SetupDiEnumDeviceInterfaces(deviceList, ref DevInfo, ref DeviceClassGUID, InterfaceIndex, ref IntInfo))
{
DeviceInfo Info = new DeviceInfo(DevID);
Info.DevicePath = SetupAPI.GetDeviceInterfacePath(deviceList, ref DevInfo, ref IntInfo);
if (String.IsNullOrEmpty(Info.DevicePath))
{
throw new Win32Exception();
}
Info.InterfaceGUID = IntInfo.classGuid;
Info.Instance = DevInfo.devInst;
Info.Class = SetupAPI.GetDevicePropertyString(deviceList, DevInfo, (uint)SPDRP.SPDRP_CLASS);
Info.FriendlyName = SetupAPI.GetDevicePropertyString(deviceList, DevInfo, (uint)SPDRP.SPDRP_FRIENDLYNAME);
Info.Description = SetupAPI.GetDevicePropertyString(deviceList, DevInfo, (uint)SPDRP.SPDRP_DEVICEDESC);
Info.Enumerator = SetupAPI.GetDevicePropertyString(deviceList, DevInfo, (uint)SPDRP.SPDRP_ENUMERATOR_NAME);
Info.Location = SetupAPI.GetDevicePropertyString(deviceList, DevInfo, (uint)SPDRP.SPDRP_LOCATION_INFORMATION);
Info.Manufacturer = SetupAPI.GetDevicePropertyString(deviceList, DevInfo, (uint)SPDRP.SPDRP_MFG);
Info.ServiceName = SetupAPI.GetDevicePropertyString(deviceList, DevInfo, (uint)SPDRP.SPDRP_SERVICE);
Info.ClassGUID = System.Guid.Parse(SetupAPI.GetDevicePropertyString(deviceList, DevInfo, (uint)SPDRP.SPDRP_CLASSGUID));
Devices.Add(Info);
InterfaceIndex++;
IntInfo = new SetupAPI.SP_DEVINFO_DATA();
IntInfo.cbSize = (uint)Marshal.SizeOf(IntInfo);
}
DeviceIndex++;
}
SetupAPI.SetupDiDestroyDeviceInfoList(deviceList);
return(Devices);
}
