OH_ArkUI_PointerEvent_GetYByIndex

arkui_sys::ui_input_event

Function OH_ArkUI_PointerEvent_GetYByIndex 

Source 
pub unsafe extern "C" fn OH_ArkUI_PointerEvent_GetYByIndex(
    event: *const ArkUI_UIInputEvent,
    pointerIndex: u32,
) -> f32
Available on crate feature api-12 only.
Expand description

Obtains the Y coordinate of a specific contact point relative to the upper left corner of the current component from a pointer event (such as a touch, mouse, or axis event). For mouse and axis events, this API returns the default value of 0.0f if the given index is greater than 0.

§Arguments

  • event - Pointer to the current UI input event.

  • pointerIndex - Index of the target contact point in the contact point list.

§Returns

  • Y coordinate relative to the upper left corner of the current component; 0.0f if any parameter error occurs.

Available since API-level: 12