fires when the user clicks on a custom button in the lightbox

void onLightboxButton(string css,HTMLElement node,Event e);
cssstringthe name of the CSS class applied to the button
nodeHTMLElementan HTML element of the clicked button
eEventa native 'click' event object


gantt.attachEvent("onLightboxButton", function (css, node, e){
    //any custom logic here


The event fires only for custom buttons at the bottom of the lightbox and doesn't fire for the default buttons.

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