Function OH_ArkUI_PointerEvent_GetHistoryPointerCount

pub unsafe extern "C" fn OH_ArkUI_PointerEvent_GetHistoryPointerCount(
    event: *const ArkUI_UIInputEvent,
    historyIndex: u32,
) -> u32

Available on crate feature api-12 only.

Obtains the number of touch points in a specific historical event from a directional input event (such as a touch event, mouse event, or axis event).

Arguments

event - Indicates the pointer to the current UI input event.

historyIndex - Indicates the index of the target historical event.

Returns

Returns the number of touch points in the specified historical event

Available since API-level: 12