How to close all IDE “New Edit Windows” (some of which are not visible)

Question

Recently in the D7 IDE, I started using the "New Edit Window" option.

Now, it seems that I have several non-visible edit windows, because sometimes the title bar for a particular window will have the filename followed by a colon and number, as shown below.

This can be confusing, since sometimes use File, Open to open a .pas file and nothing seems to happen, because, I suspect the code is already in an open (but hidden) windows.

I've tried closing all the windows I can see, etc, but these title bars with a number following the filename keep re-appearing, sometimes floating over other editing windows.

Is there a surefire way to close all edit windows so I'm back to just having one?

Additional information in response to comments:

I am able to close the individual files (tabs) in window with the standard Ctrl-F4. And when the last file is closed, the window disappears as it should. But sometimes when I open a new file, it opens in a new editing window (as if I'd actually clicked on the "New Edit Window" option in the context menu.) It appears that there are several windows that were created by "New Edit Window" commands that are hidden and sometimes are used to display newly opened files.

Answer 1

Cause:

This is due to the Autosave Editor files option in the environment settings.

When this is enabled, windows that aren't explicitly closed within the project session are indeed remembered by that option. Although, there really are no hidden windows, just the count of previously created windows is stored.

Solution:

Delete the corresponding Delphi Desktop File (*.dsk) from the project folder, or manually edit that file and rewrite EditWindowCount=4 to EditWindowCount=1 within the [Modules] section.