menu-bar-height

Arguments:

Returns the standard height for any menu-bar on a window.

You likely will need to know this value if you create menu-bars on child windows. In the Windows operating system, child windows are not allowed to have menu-bars. Common Graphics now allows it anyway by implementing a menu-bar pane that emulates the one in the underlying window system. This menu bar (on a child window) is not part of the window's frame, though, and so it takes up space in the user coordinate system of the window. You will therefore need to position any widgets or windows that are in the child window that has a menu-bar so that they are below the menu-bar. See menu.

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Created 2015.5.21.