There is no application window. Instead, each application shows one window for each document, plus tool palettes, etc in their own window. The application would take over the global menu bar when active.
This is in contrast to Windows 3, which had the "multiple document interface", in which each application had its own single window, with the application's main menu under the title bar, and containing a sub-window for each open document and tool palette.
There are pros and cons for each design. The Mac's document-based style is aimed at making it easier to work with several apps at once. This sort of drifted away with the modern one-window Apple apps. Now they even go fullscreen, which has been a decent way to use Microsoft MDI apps since the 16-bit days.
This is in contrast to Windows 3, which had the "multiple document interface", in which each application had its own single window, with the application's main menu under the title bar, and containing a sub-window for each open document and tool palette.
There are pros and cons for each design. The Mac's document-based style is aimed at making it easier to work with several apps at once. This sort of drifted away with the modern one-window Apple apps. Now they even go fullscreen, which has been a decent way to use Microsoft MDI apps since the 16-bit days.