With that said, I don't know of any Bible study software that are written as an MDI program.
Josh has pretty well answered the question.
But to respond here on applications using MID, I believe theWORD would fit that bill.
It supports floating windows, and the focus can shift back and forth between the "Main" window and the "Floater" (which is a 'child' of the main window. This is a trait of an MDI application.). It will also allow multiple bible windows to open, and not just bible windows, but all books, etc.
And.... you can have multiple floaters. theWORD will also allow you to define different desktops, for the purpose of displaying those resources you want to use for a particular type of study. Each desktop re-callable with a mouse click.
All of this ability comes with a steeper learning curve, and a need to obtain multiple resources (all over) again. On the bright side "Most" resources available for e-Sword are also available for theWORD.
Now, the reason I mentioned 'child' is that with an SDI, when you open a child window, it retains focus and no other window for that application can do anything until the child is closed. This is not the case with an MDI application. With an MDI, you can switch focus around between multiple children, and even back to the parent (call it the
mail main application window) while the child in question is still open.
Think of a pop-up dialog window you might see. The program won't let you do anything until you close the dialog box. (That is an SDI behavior).
Anyway, enough rambling.
You can do half of what you want with e-Sword, or switch applications and do almost all of what you want. It really depends on wither you want to have to learn a new program. If you have purchased a number of (too many) resources for e-Sword as I had to make switching a viable option, you can run both applications. Just use your purchased resources with e-sword and use theWORD for Public Domain resources.
I hope I have not made the waters any muddier.
Edited by Roy, 12 December 2014 - 06:16 PM.