onBeforeTooltip

fires before the tooltip is displayed for a data item (only with the 'tooltip' extension enabled)

id

string

the id of a data item that the tooltip will be shown for

boolean

defines whether the default action of the event will be triggered (true) or canceled (false)

Example

scheduler.attachEvent("onBeforeTooltip", function (id){
    //any custom logic here
    return true;
});

The event is blockable. Return false and the tooltip won't be shown.

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