<html lang="en"> <head> <title>GUI Development - GNU Octave</title> <meta http-equiv="Content-Type" content="text/html"> <meta name="description" content="GNU Octave"> <meta name="generator" content="makeinfo 4.13"> <link title="Top" rel="start" href="index.html#Top"> <link rel="prev" href="Object-Oriented-Programming.html#Object-Oriented-Programming" title="Object Oriented Programming"> <link rel="next" href="System-Utilities.html#System-Utilities" title="System Utilities"> <link href="http://www.gnu.org/software/texinfo/" rel="generator-home" title="Texinfo Homepage"> <meta http-equiv="Content-Style-Type" content="text/css"> <style type="text/css"><!-- pre.display { font-family:inherit } pre.format { font-family:inherit } pre.smalldisplay { font-family:inherit; font-size:smaller } pre.smallformat { font-family:inherit; font-size:smaller } pre.smallexample { font-size:smaller } pre.smalllisp { font-size:smaller } span.sc { font-variant:small-caps } span.roman { font-family:serif; font-weight:normal; } span.sansserif { font-family:sans-serif; font-weight:normal; } --></style> </head> <body> <div class="node"> <a name="GUI-Development"></a> <p> Next: <a rel="next" accesskey="n" href="System-Utilities.html#System-Utilities">System Utilities</a>, Previous: <a rel="previous" accesskey="p" href="Object-Oriented-Programming.html#Object-Oriented-Programming">Object Oriented Programming</a>, Up: <a rel="up" accesskey="u" href="index.html#Top">Top</a> <hr> </div> <h2 class="chapter">35 GUI Development</h2> <p>Octave is principally a batch or command-line language. However, it does offer some limited features for constructing graphical interfaces for interacting with users. <p>The GUI elements available are I/O dialogs and a progress bar. 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. <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>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. <ul class="menu"> <li><a accesskey="1" href="I_002fO-Dialogs.html#I_002fO-Dialogs">I/O Dialogs</a> <li><a accesskey="2" href="Progress-Bar.html#Progress-Bar">Progress Bar</a> <li><a accesskey="3" href="GUI-Utility-Functions.html#GUI-Utility-Functions">GUI Utility Functions</a> <li><a accesskey="4" href="User_002dDefined-Preferences.html#User_002dDefined-Preferences">User-Defined Preferences</a> </ul> </body></html>