static extern ConfigManagerResult CM_Get_DevNode_Property_Keys(uint devInst, [Out]DEVPROPKEY[] propertyKeyArray,

struct DEVPROPKEY {

     public DEVPROPKEY(Guid guid, uint pid) {

var keys = new DEVPROPKEY[keyCount];

    internal unsafe struct DEVPROPKEY

Structure DEVPROPKEY

Vista and Windows 7 only. DEVPROPKEY

        ref DEVPROPKEY propertyKey,

        ref DEVPROPKEY propertyKey,

DEVPROPKEY