<!--
{
  "availability" : [
    "macCatalyst: 13.0.0 -",
    "macOS: 10.2.0 -"
  ],
  "documentType" : "symbol",
  "framework" : "ForceFeedback",
  "identifier" : "/documentation/ForceFeedback/FFEFFESCAPE/dwSize",
  "metadataVersion" : "0.1.0",
  "role" : "Instance Property",
  "symbol" : {
    "kind" : "Instance Property",
    "modules" : [
      "Force Feedback"
    ],
    "preciseIdentifier" : "c:@S@FFEFFESCAPE@FI@dwSize"
  },
  "title" : "dwSize"
}
-->

# dwSize

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

```
var dwSize: DWORD
```

---

Copyright &copy; 2026 Apple Inc. All rights reserved. | [Terms of Use](https://www.apple.com/legal/internet-services/terms/site.html) | [Privacy Policy](https://www.apple.com/privacy/privacy-policy)