internal static DeviceProperty GetProperty(string link_path, DEVPROPKEY key)
{
DeviceProperty ret = new DeviceProperty()
{
Name = DevicePropertyKeys.KeyToName(key), FmtId = key.fmtid, Pid = key.pid, Data = new byte[0]
};
using (var buffer = GetDeviceInterfaceProperty(link_path, key, out DEVPROPTYPE type, false).GetResultOrDefault()) {
if (buffer != null)
{
ret.Type = type;
ret.Data = buffer.ToArray();
}
}
return(ret);
}
internal static DeviceProperty GetProperty(int devinst, DEVPROPKEY key)
{
DeviceProperty ret = new DeviceProperty()
{
Name = DevicePropertyKeys.KeyToName(key), FmtId = key.fmtid, Pid = key.pid, Data = new byte[0]
};
using (var buffer = new SafeHGlobalBuffer(2000)) {
int length = buffer.Length;
if (DeviceNativeMethods.CM_Get_DevNode_PropertyW(devinst, key, out DEVPROPTYPE type, buffer, ref length, 0) == CrError.SUCCESS)
{
ret.Type = type;
ret.Data = buffer.ReadBytes(length);
}
}
return(ret);
}
internal static DeviceProperty GetProperty(Guid class_guid, bool interface_guid, DEVPROPKEY key)
{
DeviceProperty ret = new DeviceProperty()
{
Name = DevicePropertyKeys.KeyToName(key), FmtId = key.fmtid, Pid = key.pid, Data = new byte[0]
};
using (var buffer = GetClassProperty(class_guid, interface_guid ? CmClassType.Interface : CmClassType.Installer,
key, out DEVPROPTYPE type, false).GetResultOrDefault()) {
if (buffer != null)
{
ret.Type = type;
ret.Data = buffer.ToArray();
}
}
return(ret);
}
