Emitted when a hand writing operation is cancelled.
Implement the member function IBusEngineClass:IBusEngine:cancel_hand_writing in extended class to receive this signal.
<note><para>Argument user_data is ignored in this function.</para> </note>
| coordinates |
An array of double (0.0 to 1.0) which represents a stroke (i.e. [x1, y1, x2, y2, x3, y3, ...]). |
| coordinates_len |
The number of elements in the array. |