OH_Input_AddTouchEventMonitor

ohos_input_sys::input_manager

Function OH_Input_AddTouchEventMonitor 

Source 
pub unsafe extern "C" fn OH_Input_AddTouchEventMonitor(
    callback: Input_TouchEventCallback,
) -> Input_Result
Available on crate feature api-12 only.
Expand description

Add a listener for touch events.

ohos.permission.INPUT_MONITORING

§Arguments

  • callback - - Callback used to receive touch events.

§Returns

  • OH_Input_AddTouchEventMonitor function result code. [INPUT_SUCCESS] Adds a listener of touch events success.

[INPUT_PERMISSION_DENIED] Permission verification failed.

[INPUT_PARAMETER_ERROR] The callback is NULL.

[INPUT_SERVICE_EXCEPTION] Failed to add the monitor because the service is exception.

Required System Capabilities: SystemCapability.MultimodalInput.Input.Core

Available since API-level: 12