OH_ArkUI_PointerEvent_GetDisplayYByIndex

arkui_sys::ui_input_event

Function OH_ArkUI_PointerEvent_GetDisplayYByIndex 

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

Obtains the Y coordinate of a specific touch point relative to the upper left corner of the current screen from a pointer event (such as a touch event, mouse event, or axis event).

§Arguments

  • event - Pointer to the current UI input event.

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

§Returns

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

Available since API-level: 12