C# Signature:
[DllImport("CfgMgr32.dll", CharSet = CharSet.Unicode)]
private static extern ConfigManagerResult CM_Get_DevNode_Property(uint devInst, ref DEVPROPKEY propertyKey,
out uint propertyType, [Out]byte[] propertyBuffer, ref uint propertyBufferSize, uint zeroFlags);
[DllImport("CfgMgr32.dll", CharSet = CharSet.Unicode)]
private static extern ConfigManagerResult CM_Get_DevNode_Property(uint devInst, ref DEVPROPKEY propertyKey,
out uint propertyType_0x02, out sbyte propertyBuffer, ref uint propertyBufferSize, uint zeroFlags);
[DllImport("CfgMgr32.dll", CharSet = CharSet.Unicode)]
private static extern ConfigManagerResult CM_Get_DevNode_Property(uint devInst, ref DEVPROPKEY propertyKey,
out uint propertyType_0x03, out byte propertyBuffer, ref uint propertyBufferSize, uint zeroFlags);
[DllImport("CfgMgr32.dll", CharSet = CharSet.Unicode)]
private static extern ConfigManagerResult CM_Get_DevNode_Property(uint devInst, ref DEVPROPKEY propertyKey,
out uint propertyType_0x04, out short propertyBuffer, ref uint propertyBufferSize, uint zeroFlags);
[DllImport("CfgMgr32.dll", CharSet = CharSet.Unicode)]
private static extern ConfigManagerResult CM_Get_DevNode_Property(uint devInst, ref DEVPROPKEY propertyKey,
out uint propertyType_0x05, out ushort propertyBuffer, ref uint propertyBufferSize, uint zeroFlags);
[DllImport("CfgMgr32.dll", CharSet = CharSet.Unicode)]
private static extern ConfigManagerResult CM_Get_DevNode_Property(uint devInst, ref DEVPROPKEY propertyKey,
out uint propertyType_0x06, out int propertyBuffer, ref uint propertyBufferSize, uint zeroFlags);
[DllImport("CfgMgr32.dll", CharSet = CharSet.Unicode)]
private static extern ConfigManagerResult CM_Get_DevNode_Property(uint devInst, ref DEVPROPKEY propertyKey,
out uint propertyType_0x07, out uint propertyBuffer, ref uint propertyBufferSize, uint zeroFlags);
[DllImport("CfgMgr32.dll", CharSet = CharSet.Unicode)]
private static extern ConfigManagerResult CM_Get_DevNode_Property(uint devInst, ref DEVPROPKEY propertyKey,
out uint propertyType_0x08, out long propertyBuffer, ref uint propertyBufferSize, uint zeroFlags);
[DllImport("CfgMgr32.dll", CharSet = CharSet.Unicode)]
private static extern ConfigManagerResult CM_Get_DevNode_Property(uint devInst, ref DEVPROPKEY propertyKey,
out uint propertyType_0x09, out ulong propertyBuffer, ref uint propertyBufferSize, uint zeroFlags);
[DllImport("CfgMgr32.dll", CharSet = CharSet.Unicode)]
private static extern ConfigManagerResult CM_Get_DevNode_Property(uint devInst, ref DEVPROPKEY propertyKey,
out uint propertyType_0x0A, out float propertyBuffer, ref uint propertyBufferSize, uint zeroFlags);
[DllImport("CfgMgr32.dll", CharSet = CharSet.Unicode)]
private static extern ConfigManagerResult CM_Get_DevNode_Property(uint devInst, ref DEVPROPKEY propertyKey,
out uint propertyType_0x0B, out double propertyBuffer, ref uint propertyBufferSize, uint zeroFlags);
[DllImport("CfgMgr32.dll", CharSet = CharSet.Unicode)]
private static extern ConfigManagerResult CM_Get_DevNode_Property(uint devInst, ref DEVPROPKEY propertyKey,
out uint propertyType_0x0C, out decimal propertyBuffer, ref uint propertyBufferSize, uint zeroFlags);
[DllImport("CfgMgr32.dll", CharSet = CharSet.Unicode)]
private static extern ConfigManagerResult CM_Get_DevNode_Property(uint devInst, ref DEVPROPKEY propertyKey,
out uint propertyType_0x0D, out Guid propertyBuffer, ref uint propertyBufferSize, uint zeroFlags);
[DllImport("CfgMgr32.dll", CharSet = CharSet.Unicode)]
private static extern ConfigManagerResult CM_Get_DevNode_Property(uint devInst, ref DEVPROPKEY propertyKey,
out uint propertyType_0x11, [MarshalAs(UnmanagedType.I1)] out bool propertyBuffer,
ref uint propertyBufferSize, uint zeroFlags);
[DllImport("CfgMgr32.dll", CharSet = CharSet.Unicode)]
private static extern ConfigManagerResult CM_Get_DevNode_Property(uint devInst, ref DEVPROPKEY propertyKey,
out uint propertyType_0x12, StringBuilder propertyBuffer, ref uint propertyBufferSize, uint zeroFlags);
User-Defined Types:
struct DEVPROPKEY {
public DEVPROPKEY(Guid guid, uint pid) {
_guid = guid;
_pid = pid;
}
public Guid _guid;
public uint _pid;
}
enum ConfigManagerResult : uint {
Success = 0x00000000,
Default = 0x00000001,
OutOfMemory = 0x00000002,
InvalidPointer = 0x00000003,
InvalidFlag = 0x00000004,
InvalidDevnode = 0x00000005,
InvalidDevinst = InvalidDevnode,
InvalidResDes = 0x00000006,
InvalidLogConf = 0x00000007,
InvalidArbitrator = 0x00000008,
InvalidNodelist = 0x00000009,
DevnodeHasReqs = 0x0000000A,
DevinstHasReqs = DevnodeHasReqs,
InvalidResourceid = 0x0000000B,
NoSuchDevnode = 0x0000000D,
NoSuchDevinst = NoSuchDevnode,
NoMoreLogConf = 0x0000000E,
NoMoreResDes = 0x0000000F,
AlreadySuchDevnode = 0x00000010,
AlreadySuchDevinst = AlreadySuchDevnode,
InvalidRangeList = 0x00000011,
InvalidRange = 0x00000012,
Failure = 0x00000013,
NoSuchLogicalDev = 0x00000014,
CreateBlocked = 0x00000015,
RemoveVetoed = 0x00000017,
ApmVetoed = 0x00000018,
InvalidLoadType = 0x00000019,
BufferSmall = 0x0000001A,
NoArbitrator = 0x0000001B,
NoRegistryHandle = 0x0000001C,
RegistryError = 0x0000001D,
InvalidDeviceId = 0x0000001E,
InvalidData = 0x0000001F,
InvalidApi = 0x00000020,
DevloaderNotReady = 0x00000021,
NeedRestart = 0x00000022,
NoMoreHwProfiles = 0x00000023,
DeviceNotThere = 0x00000024,
NoSuchValue = 0x00000025,
WrongType = 0x00000026,
InvalidPriority = 0x00000027,
NotDisableable = 0x00000028,
FreeResources = 0x00000029,
QueryVetoed = 0x0000002A,
CantShareIrq = 0x0000002B,
NoDependent = 0x0000002C,
SameResources = 0x0000002D,
NoSuchRegistryKey = 0x0000002E,
InvalidMachinename = 0x0000002F, // NT ONLY
RemoteCommFailure = 0x00000030, // NT ONLY
MachineUnavailable = 0x00000031, // NT ONLY
NoCmServices = 0x00000032, // NT ONLY
AccessDenied = 0x00000033, // NT ONLY
CallNotImplemented = 0x00000034,
InvalidProperty = 0x00000035,
DeviceInterfaceActive = 0x00000036,
NoSuchDeviceInterface = 0x00000037,
InvalidReferenceString = 0x00000038,
InvalidConflictList = 0x00000039,
InvalidIndex = 0x0000003A,
InvalidStructureSize = 0x0000003B
}
Sample Code:
DEVPROPKEY key = ...;
uint propertyType;
uint propBufSize = 0;
byte[] buffer = null;
result = CM_Get_DevNode_Property(devInst, ref key, out propertyType, buffer, ref propBufSize, 0);
if (result != ConfigManagerResult.BufferSmall) {
throw new Exception(string.Format("Failed to retrieve property size for property {0} {1}: {2}.",
key._guid, key._pid, result));
}
object value;
switch (propertyType) {
case 0x02:
sbyte v;
result = CM_Get_DevNode_Property(devInst, ref key, out propertyType, out v, ref propBufSize, 0);
value = v;
break;
case 0x03:
byte b;
result = CM_Get_DevNode_Property(devInst, ref key, out propertyType, out b, ref propBufSize, 0);
value = b;
break;
case 0x04:
short s;
result = CM_Get_DevNode_Property(devInst, ref key, out propertyType, out s, ref propBufSize, 0);
value = s;
break;
case 0x05:
ushort us;
result = CM_Get_DevNode_Property(devInst, ref key, out propertyType, out us, ref propBufSize, 0);
value = us;
break;
case 0x06:
int i;
result = CM_Get_DevNode_Property(devInst, ref key, out propertyType, out i, ref propBufSize, 0);
value = i;
break;
case 0x07:
uint ui;
result = CM_Get_DevNode_Property(devInst, ref key, out propertyType, out ui, ref propBufSize, 0);
value = ui;
break;
case 0x08:
long l;
result = CM_Get_DevNode_Property(devInst, ref key, out propertyType, out l, ref propBufSize, 0);
value = l;
break;
case 0x09:
ulong ul;
result = CM_Get_DevNode_Property(devInst, ref key, out propertyType, out ul, ref propBufSize, 0);
value = ul;
break;
case 0x0A:
float f;
result = CM_Get_DevNode_Property(devInst, ref key, out propertyType, out f, ref propBufSize, 0);
value = f;
break;
case 0x0B:
double d;
result = CM_Get_DevNode_Property(devInst, ref key, out propertyType, out d, ref propBufSize, 0);
value = d;
break;
case 0x0C:
decimal dec;
result = CM_Get_DevNode_Property(devInst, ref key, out propertyType, out dec, ref propBufSize, 0);
value = dec;
break;
case 0x0D:
Guid guid;
result = CM_Get_DevNode_Property(devInst, ref key, out propertyType, out guid, ref propBufSize, 0);
value = guid;
break;
case 0x11:
bool bo;
result = CM_Get_DevNode_Property(devInst, ref key, out propertyType, out bo, ref propBufSize, 0);
value = bo;
break;
case 0x12:
var builder = new StringBuilder((int)propBufSize);
result = CM_Get_DevNode_Property(devInst, ref key, out propertyType, builder, ref propBufSize, 0);
value = builder;
break;
default:
buffer = new byte[propBufSize];
result = CM_Get_DevNode_Property(devInst, ref key, out propertyType, buffer, ref propBufSize, 0);
value = "a buffer";
break;
}
if (result != ConfigManagerResult.Success) {
throw new Exception("Failed to retrieve property: " + result + ".");
}
Console.Out.WriteLine("Property {0} {1:x} type {2:x} = {3}.", key._guid, key._pid, propertyType, value);
Documentation:
https://msdn.microsoft.com/en-us/library/windows/hardware/hh780220.aspx
