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<h2 class="chapter" id="GUI-Development-1"><span>35 GUI Development<a class="copiable-link" href="#GUI-Development-1"> ¶</a></span></h2>
<p>Octave is principally a batch or command-line language. However, it does
offer some features for constructing graphical interfaces that interact with
users.
</p>
<p>The GUI elements available are I/O dialogs, a progress bar, and UI elements
for plot windows. For example, rather than hardcoding a filename for output
results a script can open a dialog box and allow the user to choose a file.
Similarly, if a calculation is expected to take a long time a script can
display a progress bar. The various UI elements can be used to fully customize
the plot window with menubars, toolbars, context menus, pushbuttons, sliders,
etc.
</p>
<p>Several utility functions make it possible to store private data for use with
a GUI which will not pollute the user’s variable space.
</p>
<p>Finally, a program written in Octave might want to have long term storage of
preferences or state variables. This can be done with user-defined
preferences.
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<li><a href="I_002fO-Dialogs.html" accesskey="1">I/O Dialogs</a></li>
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<li><a href="UI-Elements.html" accesskey="3">UI Elements</a></li>
<li><a href="GUI-Utility-Functions.html" accesskey="4">GUI Utility Functions</a></li>
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<li><a href="Octave-Workspace-Windows.html" accesskey="6">Octave Workspace Windows</a></li>
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