---
title: FxModifierKeys
framework: Professional Video Applications
role: symbol
role_heading: Type Alias
platforms: [fxplug 3.1+]
path: professional_video_applications/fxmodifierkeys
---

# FxModifierKeys

Specifies flags that identify modifier keys held down while an event is generated.

## Declaration

```swift
typealias FxModifierKeys = Int
```

## Topics

### Constants

- [kFxModifierKey_SHIFT](professional_video_applications/kfxmodifierkey_shift.md)
- [kFxModifierKey_CONTROL](professional_video_applications/kfxmodifierkey_control.md)
- [kFxModifierKey_OPTION](professional_video_applications/kfxmodifierkey_option.md)
- [kFxModifierKey_COMMAND](professional_video_applications/kfxmodifierkey_command.md)
- [kFxModifierKey_CAPS_LOCK](professional_video_applications/kfxmodifierkey_caps_lock.md)

## See Also

### Enumerations

- [FxImageColorInfo](professional_video_applications/fximagecolorinfo.md)
- [FxPixelTransformSupport](professional_video_applications/fxpixeltransformsupport.md)
- [FxImageOrigin](professional_video_applications/fximageorigin.md)
- [FxLightType](professional_video_applications/fxlighttype.md)
- [FxAnalysisLocation](professional_video_applications/fxanalysislocation.md)