Summary:
The SetupDiGetDeviceRegistryProperty function retrieves the specified device property.
This handle is typically returned by the SetupDiGetClassDevs or SetupDiGetClassDevsEx function.
/// <summary>
/// The SetupDiGetDeviceRegistryProperty function retrieves the specified device property.
/// This handle is typically returned by the SetupDiGetClassDevs or SetupDiGetClassDevsEx function.
/// </summary>
/// <param Name="DeviceInfoSet">Handle to the device information set that contains the interface and its underlying device.</param>
/// <param Name="DeviceInfoData">Pointer to an SP_DEVINFO_DATA structure that defines the device instance.</param>
/// <param Name="Property">Device property to be retrieved. SEE MSDN</param>
/// <param Name="PropertyRegDataType">Pointer to a variable that receives the registry data Type. This parameter can be NULL.</param>
/// <param Name="PropertyBuffer">Pointer to a buffer that receives the requested device property.</param>
/// <param Name="PropertyBufferSize">Size of the buffer, in bytes.</param>
/// <param Name="RequiredSize">Pointer to a variable that receives the required buffer size, in bytes. This parameter can be NULL.</param>
/// <returns>If the function succeeds, the return value is nonzero.</returns>
[DllImport("setupapi.dll", CharSet = CharSet.Auto, SetLastError = true)]
public static extern bool SetupDiGetDeviceRegistryProperty(
IntPtr DeviceInfoSet,
ref SP_DEVINFO_DATA DeviceInfoData,
uint Property,
out Uint32 PropertyRegDataType,
byte[] PropertyBuffer,
uint PropertyBufferSize,
out Uint32 RequiredSize
);
<DllImport("setupapi.dll", SetLastError:=True)> _
Public Shared Function SetupDiGetDeviceRegistryProperty( _
ByVal DeviceInfoSet As Integer, _
ByRef DeviceInfoData As SP_DEVINFO_DATA, _
ByVal [Property] As Integer, _
ByRef PropertyRegDataType As Integer, _
ByVal PropertyBuffer As Byte(), _
ByVal PropertyBufferSize As Integer, _
ByRef RequiredSize As Integer) As Boolean
End Function
/// <summary>
/// The SP_DEVINFO_DATA structure defines a device instance that is a member of a device information set.
/// </summary>
public struct SP_DEVINFO_DATA
{
/// <summary>Size of the structure, in bytes.</summary>
public uint cbSize;
/// <summary>GUID of the device interface class.</summary>
public Guid ClassGuid;
/// <summary>Handle to this device instance.</summary>
public uint DevInst;
/// <summary>Reserved; do not use.</summary>
public uint Reserved;
}
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Guid DiskGUID = new Guid(GUID_DEVINTERFACE_DISK);
// We start at the "root" of the device tree and look for all
// devices that match the interface GUID of a disk
IntPtr h = SetupDiGetClassDevs(ref DiskGUID, 0, IntPtr.Zero, DIGCF_PRESENT | DIGCF_DEVICEINTERFACE);
if (h.ToInt32() != INVALID_HANDLE_VALUE)
{
bool Success = true;
int i = 0;
while (Success)
{
// create a Device Interface Data structure
SP_DEVICE_INTERFACE_DATA dia = new SP_DEVICE_INTERFACE_DATA();
dia.cbSize = Marshal.SizeOf(dia);
// start the enumeration
Success = SetupDiEnumDeviceInterfaces(h, IntPtr.Zero, ref DiskGUID, i, ref dia);
if (Success)
{
// build a DevInfo Data structure
SP_DEVINFO_DATA da = new SP_DEVINFO_DATA();
da.cbSize = Marshal.SizeOf(da);
// build a Device Interface Detail Data structure
SP_DEVICE_INTERFACE_DETAIL_DATA didd = new SP_DEVICE_INTERFACE_DETAIL_DATA();
didd.cbSize = 4 + Marshal.SystemDefaultCharSize; // trust me :)
// now we can get some more detailed information
int nRequiredSize = 0;
int nBytes = BUFFER_SIZE;
if (SetupDiGetDeviceInterfaceDetail(h, ref dia, ref didd, nBytes, ref nRequiredSize, ref da))
{
// get the Device Description and DriverKeyName
Uint32 RequiredSize;
Uint32 RegType;
byte[] ptrBuf = new byte[BUFFER_SIZE];
if (SetupDiGetDeviceRegistryProperty(h, ref da, SPDRP_DEVICEDESC, out RegType, ptrBuf, BUFFER_SIZE, out RequiredSize))
{
string ControllerDeviceDesc = Marshal.PtrToStringAuto(ptrBuf);
}
if (SetupDiGetDeviceRegistryProperty(h, ref da, SPDRP_DRIVER, out RegType, ptrBuf, BUFFER_SIZE, out RequiredSize))
{
string ControllerDriverKeyName = Marshal.PtrToStringAuto(ptrBuf);
}
}
}
}
i++;
}
SetupDiDestroyDeviceInfoList(h);