Clicking the Click Through option on the main menu will cause the Bitmeter window to stop responding to all mouse events. Any mouse actions which occur within the window will be passed down to the window immediately behind:
Click Through allows Bitmeter to be permanently visible, without getting in the way of other windows on the screen. It is recommended that this feature is used with the window partially transparent, and in conjunction with the 'Float' option. Once Click Through has been enabled, the main menu will no longer be accessible via right-clicking on the main window, and so must be accessed via the System Tray icon instead. When Click Through is enabled, a tick will be visible next to this option on the menu.