Function OH_ArkUI_UnregisterSystemFontStyleChangeEvent 

pub unsafe extern "C" fn OH_ArkUI_UnregisterSystemFontStyleChangeEvent(
    node: ArkUI_NodeHandle,
)

Available on crate feature api-12 only.

Unregister the event callback when the system font style changes.

Arguments

• node - Indicates the target node.

Available since API-level: 12