---
title: dwSize
framework: Force Feedback
role: symbol
role_heading: Instance Property
platforms: [Mac Catalyst 13.0+, macOS 10.2+]
path: forcefeedback/ffeffescape/dwsize
---

# dwSize

Size, in bytes, of this structure. This member must be initialized before the structure is used.

## Declaration

```swift
var dwSize: DWORD
```

## See Also

### Instance Properties

- [cbInBuffer](forcefeedback/ffeffescape/cbinbuffer.md)
- [cbOutBuffer](forcefeedback/ffeffescape/cboutbuffer.md)
- [dwCommand](forcefeedback/ffeffescape/dwcommand.md)
- [lpvInBuffer](forcefeedback/ffeffescape/lpvinbuffer.md)
- [lpvOutBuffer](forcefeedback/ffeffescape/lpvoutbuffer.md)