private void panelTitle_MouseEnter(object sender, EventArgs e) { PanelHover = true; CancelHide(); if (_button == null) { return; } if (_delayedActionPreview.Active) { _delayedActionPreview.Cancel(); } _delayedActionPreview.Init(delegate() { ShowLivePreview(_button, true); }, WindowsConstants.TaskbarLivePreviewDelay); OnCustomEnter(sender, TooltipEventArgs.From(_button)); }