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<div class="refentry" title="FLtext">
<a id="FLtext"></a>
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<a id="IndexFLtext" class="indexterm"></a>
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<h2>
<span class="refentrytitle">FLtext</span>
</h2>
<p>FLtext —
A FLTK widget opcode that creates a textbox.
</p>
</div>
<div class="refsect1" title="Description">
<a id="idp22954864"></a>
<h2>Description</h2>
<p>
<span class="emphasis"><em>FLtext</em></span> allows the user to modify a parameter value by directly typing it into a text field.
</p>
</div>
<div class="refsect1" title="Syntax">
<a id="idp22955760"></a>
<h2>Syntax</h2>
<pre class="synopsis">kout, ihandle <span class="command"><strong>FLtext</strong></span> "label", imin, imax, istep, itype, iwidth, \
iheight, ix, iy</pre>
</div>
<div class="refsect1" title="Initialization">
<a id="idp22974616"></a>
<h2>Initialization</h2>
<p>
<span class="emphasis"><em>ihandle</em></span> -- a handle value (an integer number) that unequivocally references a corresponding widget. This is used by other opcodes that modify a widget's properties (see <a class="link" href="ControlFltkAppearance.html" title="Modifying FLTK Widget Appearance"><em class="citetitle">Modifying FLTK Widget Appearance</em></a>). It is automatically output by <span class="emphasis"><em>FLtext</em></span> and must not be set by the user label. (The user label is a double-quoted string containing some user-provided text placed near the widget.)
</p>
<p>
<span class="emphasis"><em><span class="quote">“<span class="quote">label</span>”</span></em></span> -- a double-quoted string containing some user-provided text, placed near corresponding widget.
</p>
<p>
<span class="emphasis"><em>imin</em></span> -- minimum value of output range.
</p>
<p>
<span class="emphasis"><em>imax</em></span> -- maximum value of output range.
</p>
<p>
<span class="emphasis"><em>istep</em></span> -- a floating-point number indicating the increment of valuator value corresponding to the mouse dragging. The <span class="emphasis"><em>istep</em></span> argument allows the user to arbitrarily slow mouse motion, enabling arbitrary precision.
</p>
<p>
<span class="emphasis"><em>itype</em></span> -- an integer number denoting the appearance of the valuator.
</p>
<p>
The <span class="emphasis"><em>itype</em></span> argument can be set to the following values:
</p>
<div class="itemizedlist">
<ul class="itemizedlist" type="disc">
<li class="listitem">
<p>1 - normal behaviour</p>
</li>
<li class="listitem">
<p>2 - dragging operation is suppressed, instead it will appear two arrow buttons. A mouse-click on one of these buttons can increase/decrease the output value.</p>
</li>
<li class="listitem">
<p>3 - text editing is suppressed, only mouse dragging modifies the output value.</p>
</li>
</ul>
</div>
<p>
</p>
<p>
<span class="emphasis"><em>iwidth</em></span> -- width of widget.
</p>
<p>
<span class="emphasis"><em>iheight</em></span> -- height of widget.
</p>
<p>
<span class="emphasis"><em>ix</em></span> -- horizontal position of upper left corner of the valuator, relative to the upper left corner of corresponding window (expressed in pixels).
</p>
<p>
<span class="emphasis"><em>iy</em></span> -- vertical position of upper left corner of the valuator, relative to the upper
left corner of corresponding window (expressed in pixels).
</p>
</div>
<div class="refsect1" title="Performance">
<a id="idp22982952"></a>
<h2>Performance</h2>
<p>
<span class="emphasis"><em>kout</em></span> -- output value
</p>
<p>
<span class="emphasis"><em>FLtext</em></span> allows the user to modify a parameter value by directly typing it into a text field:
</p>
<div class="mediaobject">
<img src="images/fltext.png" alt="FLtext." />
<div class="caption">
<p>FLtext.</p>
</div>
</div>
<p>
Its value can also be modified by clicking on it and dragging the mouse horizontally. The <span class="emphasis"><em>istep</em></span> argument allows the user to arbitrarily set the response on mouse dragging.
</p>
</div>
<div class="refsect1" title="Examples">
<a id="idp22986264"></a>
<h2>Examples</h2>
<p>
Here is an example of the FLtext opcode. It uses the file <a class="ulink" href="examples/FLtext.csd" target="_top"><em class="citetitle">FLtext.csd</em></a>.
</p>
<div class="example">
<a id="idp22987232"></a>
<p class="title">
<strong>Example 264. Example of the FLtext opcode.</strong>
</p>
<div class="example-contents">
<p>See the sections <a class="link" href="UsingRealTime.html" title="Real-Time Audio"><em class="citetitle">Real-time Audio</em></a> and <a class="link" href="CommandFlags.html" title="Csound command line"><em class="citetitle">Command Line Flags</em></a> for more information on using command line flags.</p>
<pre class="programlisting">
<span class="csdtag"><CsoundSynthesizer></span>
<span class="csdtag"><CsOptions></span>
<span class="comment">; Select audio/midi flags here according to platform</span>
<span class="comment">; Audio out Audio in No messages</span>
-odac -iadc -d <span class="comment">;;;RT audio I/O</span>
<span class="comment">; For Non-realtime ouput leave only the line below:</span>
<span class="comment">; -o FLtext.wav -W ;;; for file output any platform</span>
<span class="csdtag"></CsOptions></span>
<span class="csdtag"><CsInstruments></span>
<span class="comment">; A sine with oscillator with fltext box controlled</span>
<span class="comment">; frequency either click and drag or double click and</span>
<span class="comment">; type to change frequency value</span>
<span class="ohdr">sr</span> <span class="op">=</span> 44100
<span class="ohdr">kr</span> <span class="op">=</span> 441
<span class="ohdr">ksmps</span> <span class="op">=</span> 100
<span class="ohdr">nchnls</span> <span class="op">=</span> 1
<span class="opc">FLpanel</span> "Frequency Text Box", 270, 600, 50, 50
<span class="comment">; Minimum value output by the text box</span>
imin <span class="op">=</span> 200
<span class="comment">; Maximum value output by the text box</span>
imax <span class="op">=</span> 5000
<span class="comment">; Step size</span>
istep <span class="op">=</span> 1
<span class="comment">; Text box graphic type</span>
itype <span class="op">=</span> 1
<span class="comment">; Width of the text box in pixels</span>
iwidth <span class="op">=</span> 70
<span class="comment">; Height of the text box in pixels</span>
iheight <span class="op">=</span> 30
<span class="comment">; Distance of the left edge of the text box </span>
<span class="comment">; from the left edge of the panel</span>
ix <span class="op">=</span> 100
<span class="comment">; Distance of the top edge of the text box</span>
<span class="comment">; from the top edge of the panel</span>
iy <span class="op">=</span> 300
gkfreq,ihandle <span class="opc">FLtext</span> "Enter the frequency", imin, imax, istep, itype, iwidth, iheight, ix, iy
<span class="comment">; End of panel contents</span>
<span class="opc">FLpanelEnd</span>
<span class="comment">; Run the widget thread!</span>
<span class="opc">FLrun</span>
<span class="oblock">instr</span> 1
iamp <span class="op">=</span> 15000
ifn <span class="op">=</span> 1
asig <span class="opc">oscili</span> iamp, gkfreq, ifn
<span class="opc">out</span> asig
<span class="oblock">endin</span>
<span class="csdtag"></CsInstruments></span>
<span class="csdtag"><CsScore></span>
<span class="comment">; Function table that defines a single cycle</span>
<span class="comment">; of a sine wave.</span>
<span class="stamnt">f</span> 1 0 1024 10 1
<span class="comment">; Instrument 1 will play a note for 1 hour.</span>
<span class="stamnt">i</span> 1 0 3600
<span class="stamnt">e</span>
<span class="csdtag"></CsScore></span>
<span class="csdtag"></CsoundSynthesizer></span>
</pre>
</div>
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<p><br class="example-break" />
</p>
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<div class="refsect1" title="See Also">
<a id="idp22989504"></a>
<h2>See Also</h2>
<p>
<a class="link" href="FLcount.html" title="FLcount"><em class="citetitle">FLcount</em></a>,
<a class="link" href="FLjoy.html" title="FLjoy"><em class="citetitle">FLjoy</em></a>,
<a class="link" href="FLknob.html" title="FLknob"><em class="citetitle">FLknob</em></a>,
<a class="link" href="FLroller.html" title="FLroller"><em class="citetitle">FLroller</em></a>,
<a class="link" href="FLslider.html" title="FLslider"><em class="citetitle">FLslider</em></a>
</p>
</div>
<div class="refsect1" title="Credits">
<a id="idp22992440"></a>
<h2>Credits</h2>
<p>Author: Gabriel Maldonado</p>
<p>New in version 4.22</p>
<p>Example written by Iain McCurdy, edited by Kevin Conder.</p>
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