struct _RTL_ACTIVATION_CONTEXT_STACK_FRAME// Size=0x18
{
    struct _RTL_ACTIVATION_CONTEXT_STACK_FRAME * Previous;// Offset=0x0 Size=0x8
    struct _ACTIVATION_CONTEXT * ActivationContext;// Offset=0x8 Size=0x8
    unsigned long Flags;// Offset=0x10 Size=0x4
};