public static extern bool SetupDiGetDeviceRegistryProperty(
SafeHandle deviceInfoSet,
ref SP_DEVINFO_DATA deviceInfoData,
SetupDiGetDeviceRegistryPropertyEnum property,
[MarshalAs(UnmanagedType.U4)] out uint propertyRegDataType,
SafeGlobalMemoryBufferHandle propertyBuffer,
[MarshalAs(UnmanagedType.U4)] uint propertyBufferSize,
IntPtr requiredSize);
private static extern bool SetupDiGetDeviceRegistryProperty(
IntPtr DeviceInfoSet,
ref SP_DEVINFO_DATA DeviceInfoData,
SetupDiGetDeviceRegistryPropertyEnum Property,
out int PropertyRegDataType,
IntPtr PropertyBuffer,
int PropertyBufferSize,
out int RequiredSize
);
private string GetDeviceProperty(IntPtr deviceEnumHandle, SetupDiGetDeviceRegistryPropertyEnum property, SP_DEVINFO_DATA devInfodata)
{
string devicePropertyValue = null;
byte[] ptrBuf = new byte[256];
if (!SetupDiGetDeviceRegistryProperty(deviceEnumHandle, ref devInfodata, (UInt32)property, out UInt32 RegType, ptrBuf, 256, out UInt32 RequiredSize))
{
LogHelper.Log("GetDeviceProperty: Failed: Error: {0}", Marshal.GetLastWin32Error());
}
static uint getDWORDProp(IntPtr h, SP_DEVINFO_DATA da, SetupDiGetDeviceRegistryPropertyEnum prop)
{
UInt32 requiredSize;
UInt32 regType;
byte[] ptrBuf = new byte[4];
if (!SetupDiGetDeviceRegistryProperty(h, ref da, (uint)prop, out regType, ptrBuf, 4, out requiredSize))
{
throw new InvalidOperationException("Error getting DWORD property");
}
if (regType != (uint)RegType.REG_DWORD || requiredSize != 4)
{
throw new InvalidOperationException("Property is not a REG_DWORD");
}
return(BitConverter.ToUInt32(ptrBuf, 0));
}
/// <summary>
/// Gets the property for SetupDiXXX function
/// </summary>
/// <param name="deviceHandle">The device handle.</param>
/// <param name="deviceInformationData">The device information data.</param>
/// <param name="property">The property.</param>
/// <returns>String representation of the property</returns>
internal static string GetProperty(IntPtr deviceHandle, SP_DEVINFO_DATA deviceInformationData, SetupDiGetDeviceRegistryPropertyEnum property)
{
bool functionAnswer = false;
UInt32 propertyRegDataType = 0;
IntPtr propertyBuffer = IntPtr.Zero;
uint requireSize = 0;
uint propertyMaximumSize = 1024;
string actualData = string.Empty;
try
{
propertyBuffer = Marshal.AllocHGlobal((int)propertyMaximumSize);
functionAnswer = UnsafeNativeMethods.SetupDiGetDeviceRegistryProperty(deviceHandle,
ref deviceInformationData,
(uint)property,
out propertyRegDataType,
propertyBuffer,
propertyMaximumSize,
out requireSize);
if (functionAnswer == false)
{
if (Marshal.GetLastWin32Error() == UnsafeNativeMethods.ERROR_INVALID_DATA)
{
Marshal.ThrowExceptionForHR(UnsafeNativeMethods.ERROR_INVALID_DATA);
}
}
// We have the answer
actualData = Marshal.PtrToStringAuto(propertyBuffer);
return actualData;
}
catch (Exception exp_gen)
{
throw new Win32Exception("Could not receive property", exp_gen);
}
finally
{
if (propertyBuffer != IntPtr.Zero)
Marshal.FreeHGlobal(propertyBuffer);
}
}
private static string getStrProp(IntPtr hDevInfo, SP_DEVINFO_DATA cDevInfo, SetupDiGetDeviceRegistryPropertyEnum p)
{
string result = null;
int buffSize = 256;
while (true)
{
int cbBuff = buffSize;
IntPtr pBuff = Marshal.AllocHGlobal(cbBuff);
try
{
int unused_propType = 0;
if (!SetupDiGetDeviceRegistryProperty(hDevInfo, ref cDevInfo, p, out unused_propType, pBuff, cbBuff, out cbBuff))
{
var lastError = Marshal.GetLastWin32Error();
if (lastError != ERROR_INSUFFICIENT_BUFFER)
{
throw new Win32Exception(lastError);
}
buffSize = buffSize * 2;
}
else
{
result = Marshal.PtrToStringUni(pBuff);
break;
}
}
finally
{
Marshal.FreeHGlobal(pBuff);
}
}
return(result);
}
/// <summary>
/// Gets the property for SetupDiXXX function
/// </summary>
/// <param name="deviceHandle">The device handle.</param>
/// <param name="deviceInformationData">The device information data.</param>
/// <param name="property">The property.</param>
/// <returns>String representation of the property</returns>
internal static string GetProperty(IntPtr deviceHandle, SP_DEVINFO_DATA deviceInformationData, SetupDiGetDeviceRegistryPropertyEnum property)
{
bool functionAnswer = false;
UInt32 propertyRegDataType = 0;
IntPtr propertyBuffer = IntPtr.Zero;
uint requireSize = 0;
uint propertyMaximumSize = 1024;
string actualData = string.Empty;
try
{
propertyBuffer = Marshal.AllocHGlobal((int)propertyMaximumSize);
functionAnswer = UnsafeNativeMethods.SetupDiGetDeviceRegistryProperty(deviceHandle,
ref deviceInformationData,
(uint)property,
out propertyRegDataType,
propertyBuffer,
propertyMaximumSize,
out requireSize);
if (functionAnswer == false)
{
if (Marshal.GetLastWin32Error() == UnsafeNativeMethods.ERROR_INVALID_DATA)
{
Marshal.ThrowExceptionForHR(UnsafeNativeMethods.ERROR_INVALID_DATA);
}
}
// We have the answer
actualData = Marshal.PtrToStringAuto(propertyBuffer);
return(actualData);
}
catch (Exception exp_gen)
{
throw new Win32Exception("Could not receive property", exp_gen);
}
finally
{
if (propertyBuffer != IntPtr.Zero)
{
Marshal.FreeHGlobal(propertyBuffer);
}
}
}
static byte[] GetDeviceProperty(IntPtr DeviceInfoSet, Win32DeviceMgmt.SP_DEVINFO_DATA DeviceInfoData, SetupDiGetDeviceRegistryPropertyEnum property)
{
StringBuilder strId = new StringBuilder(0);
byte[] ptrBuf = null;
UInt32 RegType;
UInt32 iRequiredSize = 0;
UInt32 iSize = 0;
bool iRet = Win32DeviceMgmt.SetupDiGetDeviceRegistryProperty(DeviceInfoSet, ref DeviceInfoData,
(uint)property, out RegType, ptrBuf, iSize, out iRequiredSize);
ptrBuf = new byte[iRequiredSize];
iSize = iRequiredSize;
iRet = Win32DeviceMgmt.SetupDiGetDeviceRegistryProperty(DeviceInfoSet, ref DeviceInfoData,
(uint)property, out RegType, ptrBuf, iSize, out iRequiredSize);
if (iRet)
{
return(ptrBuf);
}
return(new byte[0]);
}
static Guid GetDevicePropertyGuid(IntPtr DeviceInfoSet, Win32DeviceMgmt.SP_DEVINFO_DATA DeviceInfoData, SetupDiGetDeviceRegistryPropertyEnum property)
{
byte[] ptrBuf = GetDeviceProperty(DeviceInfoSet, DeviceInfoData, property);
return(new Guid(ptrBuf));
}
static String GetDevicePropertyString(IntPtr DeviceInfoSet, Win32DeviceMgmt.SP_DEVINFO_DATA DeviceInfoData, SetupDiGetDeviceRegistryPropertyEnum property)
{
byte[] ptrBuf = GetDeviceProperty(DeviceInfoSet, DeviceInfoData, property);
return(ptrBuf.ToStrAuto());
}
static extern bool SetupDiGetDeviceRegistryProperty(
IntPtr deviceInfoSet,
ref SP_DEVINFO_DATA deviceInfoData,
SetupDiGetDeviceRegistryPropertyEnum property,
IntPtr propertyRegDataType,
ushort[] propertyBuffer,
uint propertyBufferSize,
IntPtr requiredSize
);
internal static extern bool SetupDiGetDeviceRegistryProperty(SafeHandle deviceInfoSet, ref SpDeviceInfoData deviceInfoData, SetupDiGetDeviceRegistryPropertyEnum property, [MarshalAs(UnmanagedType.U4)] out uint propertyRegDataType, SafeGlobalMemoryBufferHandle propertyBuffer, [MarshalAs(UnmanagedType.U4)] uint propertyBufferSize, IntPtr requiredSize);
