_TP_CALLBACK_ENVIRON

//0x20 bytes (sizeof) struct _TP_CALLBACK_ENVIRON { ULONG Version; //0x0 struct _TP_POOL* Pool; //0x4 struct _TP_CLEANUP_GROUP* CleanupGroup; //0x8 VOID (*CleanupGroupCancelCallback)(VOID* arg1, VOID* arg2); //0xc VOID* RaceDll; //0x10 struct _ACTIVATION_CONTEXT* ActivationContext; //0x14 VOID (*FinalizationCallback)(struct _TP_CALLBACK_INSTANCE* arg1, VOID* arg2); //0x18 union { ULONG Flags; //0x1c struct { ULONG LongFunction:1; //0x1c ULONG Private:31; //0x1c } s; //0x1c } u; //0x1c };