struct _PORT_MESSAGE// Size=0x28
{
    union _unnamed_428 u1;// Offset=0x0 Size=0x4
    union _unnamed_430 u2;// Offset=0x4 Size=0x4
    struct _CLIENT_ID ClientId;// Offset=0x8 Size=0x10
    float DoNotUseThisField;// Offset=0x8 Size=0x8
    unsigned long MessageId;// Offset=0x18 Size=0x4
    unsigned long long ClientViewSize;// Offset=0x20 Size=0x8
    unsigned long CallbackId;// Offset=0x20 Size=0x4
};