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<html>
<head>
<title>EAGLE Help: dlgRadioButton</title>
</head>
<body bgcolor=white>
<font face=Helvetica,Arial>
<hr>
<i>EAGLE Help</i>
<h1><center>dlgRadioButton</center></h1>
<hr>
<dl>
<dt>
<b>Function</b>
<dd>
Defines a radio button.
<p>
<dt>
<b>Syntax</b>
<dd>
<tt>dlgRadioButton(string Text, int &Selected) [ <i>statement</i> ]</tt>
<p>
<dt>
<b>Description</b>
<dd>
The <tt>dlgRadioButton</tt> statement defines a radio button with the given <tt>Text</tt>.
<p>
If <tt>Text</tt> contains an <tt>'&'</tt>, the character following the ampersand
will become a hotkey, and when the user hits <tt>Alt+hotkey</tt>, the button will be selected.
To have an actual <tt>'&'</tt> character in the text it has to be <a href=317.htm>escaped</a>.
<p>
<tt>dlgRadioButton</tt> can only be used within a <a href=293.htm>dlgGroup</a>.<br>
All radio buttons within the same group must use the <b>same</b> <tt>Selected</tt> variable!
<p>
If the user selects a <tt>dlgRadioButton</tt>, the index of that button within the <tt>dlgGroup</tt>
is stored in the <tt>Selected</tt> variable.<br>
The initial value of <tt>Selected</tt> defines which radio button is initially selected.
If <tt>Selected</tt> is outside the valid range for this group, no radio button will be selected.
In order to get the correct radio button selection, <tt>Selected</tt> must be set <b>before</b>
the first <tt>dlgRadioButton</tt> is defined, and must not be modified between adding subsequent
radio buttons. Otherwise it is undefined which (if any) radio button will be selected.
<p>
The optional <tt>statement</tt> is executed every time the <tt>dlgRadioButton</tt> is selected.
<p>
</dl>
<b>See also</b> <a href=289.htm>dlgCheckBox</a>,
<a href=293.htm>dlgGroup</a>,
<a href=311.htm>Layout Information</a>,
<a href=318.htm>A Complete Example</a>
<p>
<b>Example</b>
<pre>
int align = 1;
dlgGroup("Alignment") {
dlgRadioButton("&Top", align);
dlgRadioButton("&Center", align);
dlgRadioButton("&Bottom", align);
}
</pre>
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