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<!--Copyright (C) 1988-2005 by the Institute of Global Environment and Society (IGES). See file COPYRIGHT for more information.-->
<html>
<head>
<title>GrADS Command: draw button</title>
</head>
<body bgcolor="e0f0ff" text="#000000">
<h2><b>draw button</b></h2>
<p>
<code>draw button <i>number xpos ypos width height string</i></code>
<p>
Draws a button centered on <code><i>xpos,ypos</i></code> with the
following attributes:
<p>
<ul>
<code>number </code>button number, 1 - 512<br>
<code>xpos </code>x center of the button in page coordinates (inches)<br>
<code>ypos </code>y center of the button in page coordinates (inches)<br>
<code>width </code>width (x) of the button (inches)<br>
<code>height </code>height (y) of the button (inches)<br>
<code>string </code>text to display centered in the button<br>
</ul>
<p>
<h3>Usage Notes</h3>
<ol>
<li>Button colors are specified with the <a
href="gradcomdsetbutton.html"><code>set button</code></a> command.
<p>
<li>A button's initial state is <code>ON</code>. If a user clicks on a
button following a <a href="gradcomdqpos.html"><code>q pos</code></a> command,
then the button state will switch from <code>ON (1)</code> to
<code>OFF (0)</code>. A second <a href="gradcomdqpos.html"><code>q pos</code></a>
followed by a mouse click on the button will return it to the
<code>ON</code> state.
<p>
<li>The button "state" (i.e. <code>ON/OFF</code>) may also
be set with the <a href="gradcomdredrawbutton.html"><code>redraw
button</code></a> command.
<p>
<li>See the section of the User's Guide on <a
href="script.html#widgets">widgets</a> for more information on using
buttons.
</ol>
<p>
<h3>Example</h3>
<p>
<pre>
set rgb 90 100 100 100
set rgb 91 50 50 50
set rgb 92 200 200 200
set button 2 90 91 92 3 90 91 92 10
draw button 1 2.5 8.0 2.5 0.5 Click Here
</pre>
</body>
</html>
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