@David-Healey Turned out to be quite painless in the end. ๐
const pnlPresetBrowser = Content.getComponent("pnlPresetBrowser"); // parent panel const fltPresetBrowser = Content.getComponent("fltPresetBrowser"); // floating tile const bc = Engine.createBroadcaster({"id": "PresetBrowser", "args": [component, obj]}); bc.attachToComponentMouseEvents(["fltPresetBrowser"], "Clicks Only", ""); bc.addListener("mouseAction", "Mouse action to close preset browser", function(component, event) { if (!isDefined(event.columnIndex)) return; if (event.doubleClick && event.columnIndex == 2) pnlPresetBrowser.showControl(false); });