I'm converting a ContextMenuStrip to a WinToolBarManager with a PopupMenuTool. What is the equivalent event to use for the ContextMenuStrip DropDown Closing event? I would like to be able to cancel the closing of the drop down when a button is clicked within the drop down menu.
There is currently no event available to prevent the closing of a menu. You can submit a feature request for a BeforeToolCloseup event.