---
title: msgh_size
framework: driverkit
role: symbol
role_heading: Instance Property
path: driverkit/mach_msg_header_t/msgh_size
---

# msgh_size

## Declaration

```occ
mach_msg_size_t msgh_size;
```

## See Also

### Getting the Header Fields

- [msgh_bits](driverkit/mach_msg_header_t/msgh_bits.md)
- [msgh_id](driverkit/mach_msg_header_t/msgh_id.md)
- [msgh_local_port](driverkit/mach_msg_header_t/msgh_local_port.md)
- [msgh_remote_port](driverkit/mach_msg_header_t/msgh_remote_port.md)
- [msgh_voucher_port](driverkit/mach_msg_header_t/msgh_voucher_port.md)