What exactly is a modal dialog window and when should you use it? Are there certain cases where you should refrain from using one?
Answer
A modal dialog is a window that forces the user to interact with it before they can go back to using the parent application. A great example of this would be a prompt for saving, or the "open file" dialog.
They are often used when a user is forced to make an important decision. Say you were working on a document in Microsoft Word, and you chose to exit Word before saving. A modal dialog would pop up and ask you to either Save, Don't Save, or Cancel. Until you make your decision you cannot use the application, and it will not close.
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