SMART datagrid v.1 > Classes > GridBase
It will be fired when the user types esc key or directly calls cancelEditor during editing in cell editor to cancel editing.
In the case of cancelling row editing by calling cancel, the event will not be fired and the editor will be closed.
grid.onEditCanceled = function (grid, index, edited) {
if (edited) {
alert("Cell editing is cancelled.");
}
};