# `GSComponent isHangulKeyComponent`

*Instance Method*

Whether the containing glyph is the model syllable selected for the component’s Hangul position.

## Declaration

```swift
func isHangulKeyComponent() -> Bool
```

```objc
- (BOOL) isHangulKeyComponent;
```

```python
isHangulKeyComponent() -> bool
```

## Discussion

Only components in glyphs classified as Hangul syllables qualify.

## See Also

### Hangul Composition

- [`GSComponent hangulModelGlyph`](/Core/GlyphsCore/GSComponent/hangulModelGlyph) — The name of the model syllable selected for the component’s Hangul position.