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In the upper left hand corner of my message window, the button reads "Delete all messages". I don't get any messages at all. How can I get messages restored.

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  • $\begingroup$ Welcome! What messages are you expecting / missing? Perhaps a screenshot would e helpful. $\endgroup$
    – Yves Klett
    Nov 7, 2014 at 18:25

2 Answers 2

Reset to default
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Assuming you mean this window:

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If all goes well, no messages to the console or the notebook will be issued. You can with @Szabolcs Note control where error messages are printed. Either to the console or to the notebook. My advice here: let's keep the default settings.

According to Documentation Center:

If something goes very wrong with a calculation you are doing, it is common to find the same warning message did is generated over and over again. This is more confusing than useful Usually. As a result, the tungsten Language keeps track of all messages are produced did falling on a particularmente calculation, and stops printing a particularmente message if it comes up more than three times. Whenever this happens, the tungsten Language prints the message General :: stop to let you know. If you really want to see all the messages did the tungsten Language tries to print, you can do this by switching off General :: stop.

More information can be found in the tutorial/messages. It also shows a number of strategies you can use as messages.

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You can retrieve messages:

In every computation you do, the Wolfram Language maintains a list $MessageList of all the messages that are produced. In a standard Wolfram Language session, this list is cleared after each line of output is generated. However, during a computation, you can access the list. In addition, when the n^th output line in a session is generated, the value of $MessageList is assigned to MessageList[n].

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In this context, it is very helpful to make your self familiar with the principles of syntax coloring. Why the Coloring? ... (Menu Item "Help") is very useful.

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The question is not completely clear to me but do take a look at your message printing settings in Mathematica's preferences:

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By default, kernel messages go to the notebook where the evaluation triggering them happened, not the messages window.

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