---
title: IOStreamMode
framework: IOKit
role: symbol
role_heading: Enumeration
platforms: [Mac Catalyst 18.4+, macOS 10.5+]
path: iokit/iostreammode
---

# IOStreamMode

## Declaration

```occ
typedef enum IOStreamMode : unsigned int {
    ...
} IOStreamMode;
```

## Topics

### Constants

- [kIOStreamModeInput](iokit/iostreammode/kiostreammodeinput.md)
- [kIOStreamModeInputOutput](iokit/iostreammode/kiostreammodeinputoutput.md)
- [kIOStreamModeOutput](iokit/iostreammode/kiostreammodeoutput.md)