static extern Boolean SetupDiGetDeviceInterfaceDetail(
IntPtr hDevInfo,
ref SP_DEVICE_INTERFACE_DATA deviceInterfaceData,
ref SP_DEVICE_INTERFACE_DETAIL_DATA_W deviceInterfaceDetailData,
UInt32 deviceInterfaceDetailDataSize,
out UInt32 requiredSize,
ref SP_DEVINFO_DATA deviceInfoData
);
public IEnumerable<DeviceInfo> GetAllDevices()
{
SP_DEVICE_INTERFACE_DATA deviceInfoData = new SP_DEVICE_INTERFACE_DATA();
for (uint i = 0; ; i++)
{
deviceInfoData.cbSize = Marshal.SizeOf(deviceInfoData);
if (!SetupDiEnumDeviceInterfaces(hardwareDeviceInfo,
IntPtr.Zero, // We don't care about specific PDOs
ref _InterfaceGUID,
i,
ref deviceInfoData))
{
int Error = Marshal.GetLastWin32Error();
if (Error == 259) //ERROR_NO_MORE_ITEMS
yield break;
}
else
{
uint requiredLength = 0;
SP_DEVINFO_DATA devinfoData = new SP_DEVINFO_DATA();
SetupDiGetDeviceInterfaceDetail(
hardwareDeviceInfo,
ref deviceInfoData,
IntPtr.Zero, // probing so no output buffer yet
0, // probing so output buffer length of zero
out requiredLength,
IntPtr.Zero); // not interested in the specific dev-node
devinfoData.cbSize = (UInt32)Marshal.SizeOf(devinfoData);
SP_DEVICE_INTERFACE_DETAIL_DATA_W functionClassDeviceData = new SP_DEVICE_INTERFACE_DETAIL_DATA_W();
functionClassDeviceData.cbSize = (IntPtr.Size == 8) ? 8U : 6U;
//
// Retrieve the information from Plug and Play.
//
if (!SetupDiGetDeviceInterfaceDetail(
hardwareDeviceInfo,
ref deviceInfoData,
ref functionClassDeviceData,
requiredLength,
out requiredLength,
ref devinfoData))
{
int err = Marshal.GetLastWin32Error();
continue;
}
int requiredSizeForID = 0;
SetupDiGetDeviceInstanceId(hardwareDeviceInfo, ref devinfoData, IntPtr.Zero, 0, out requiredSizeForID);
StringBuilder deviceID = new StringBuilder(requiredSizeForID);
if (!SetupDiGetDeviceInstanceId(hardwareDeviceInfo, ref devinfoData, deviceID, requiredSizeForID, out requiredSizeForID))
continue;
uint type, nameSize;
SetupDiGetDeviceRegistryProperty(hardwareDeviceInfo, ref devinfoData, SPDRP.SPDRP_FRIENDLYNAME, out type, null, 0, out nameSize);
StringBuilder friendlyName = new StringBuilder((int)nameSize);
if (!SetupDiGetDeviceRegistryProperty(hardwareDeviceInfo, ref devinfoData, SPDRP.SPDRP_FRIENDLYNAME, out type, friendlyName, nameSize, out nameSize))
{
friendlyName.Length = 0;
friendlyName.Append("???");
}
yield return new DeviceInfo(this, devinfoData, functionClassDeviceData.DevicePath.ToString(), deviceID.ToString(), friendlyName.ToString());
}
}
}
public IEnumerable <DeviceInfo> GetAllDevices()
{
SP_DEVICE_INTERFACE_DATA deviceInfoData = new SP_DEVICE_INTERFACE_DATA();
for (uint i = 0; ; i++)
{
deviceInfoData.cbSize = Marshal.SizeOf(deviceInfoData);
if (!SetupDiEnumDeviceInterfaces(hardwareDeviceInfo,
IntPtr.Zero, // We don't care about specific PDOs
ref _InterfaceGUID,
i,
ref deviceInfoData))
{
int Error = Marshal.GetLastWin32Error();
if (Error == 259) //ERROR_NO_MORE_ITEMS
{
yield break;
}
}
else
{
uint requiredLength = 0;
SP_DEVINFO_DATA devinfoData = new SP_DEVINFO_DATA();
SetupDiGetDeviceInterfaceDetail(
hardwareDeviceInfo,
ref deviceInfoData,
IntPtr.Zero, // probing so no output buffer yet
0, // probing so output buffer length of zero
out requiredLength,
IntPtr.Zero); // not interested in the specific dev-node
devinfoData.cbSize = (UInt32)Marshal.SizeOf(devinfoData);
SP_DEVICE_INTERFACE_DETAIL_DATA_W functionClassDeviceData = new SP_DEVICE_INTERFACE_DETAIL_DATA_W();
functionClassDeviceData.cbSize = (IntPtr.Size == 8) ? 8U : 6U;
//
// Retrieve the information from Plug and Play.
//
if (!SetupDiGetDeviceInterfaceDetail(
hardwareDeviceInfo,
ref deviceInfoData,
ref functionClassDeviceData,
requiredLength,
out requiredLength,
ref devinfoData))
{
int err = Marshal.GetLastWin32Error();
continue;
}
int requiredSizeForID = 0;
SetupDiGetDeviceInstanceId(hardwareDeviceInfo, ref devinfoData, IntPtr.Zero, 0, out requiredSizeForID);
StringBuilder deviceID = new StringBuilder(requiredSizeForID);
if (!SetupDiGetDeviceInstanceId(hardwareDeviceInfo, ref devinfoData, deviceID, requiredSizeForID, out requiredSizeForID))
{
continue;
}
uint type, nameSize;
SetupDiGetDeviceRegistryProperty(hardwareDeviceInfo, ref devinfoData, SPDRP.SPDRP_FRIENDLYNAME, out type, null, 0, out nameSize);
StringBuilder friendlyName = new StringBuilder((int)nameSize);
if (!SetupDiGetDeviceRegistryProperty(hardwareDeviceInfo, ref devinfoData, SPDRP.SPDRP_FRIENDLYNAME, out type, friendlyName, nameSize, out nameSize))
{
friendlyName.Length = 0;
friendlyName.Append("???");
}
yield return(new DeviceInfo(this, devinfoData, functionClassDeviceData.DevicePath.ToString(), deviceID.ToString(), friendlyName.ToString()));
}
}
}
static extern Boolean SetupDiGetDeviceInterfaceDetail(
IntPtr hDevInfo,
ref SP_DEVICE_INTERFACE_DATA deviceInterfaceData,
ref SP_DEVICE_INTERFACE_DETAIL_DATA_W deviceInterfaceDetailData,
UInt32 deviceInterfaceDetailDataSize,
out UInt32 requiredSize,
ref SP_DEVINFO_DATA deviceInfoData
);
