onAfterContextMenu

fires after the context menu was called in the item area

function onAfterContextMenu(
    // the id of the clicked item
    id: string,
    // a native event object
    e: Event,
    // the target HTML element
    node: HTMLElement
): void

Example

grid.attachEvent('onAfterContextMenu', function(id, e, node){
     console.log("Right mouse button was pressed");
});