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<div class="refentry" title="FLbutBank">
<a id="FLbutBank"></a>
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<h2>
<span class="refentrytitle">FLbutBank</span>
</h2>
<p>FLbutBank —
A FLTK widget opcode that creates a bank of buttons.
</p>
</div>
<div class="refsect1" title="Description">
<a id="idp20471552"></a>
<h2>Description</h2>
<p>
A FLTK widget opcode that creates a bank of buttons.
</p>
</div>
<div class="refsect1" title="Syntax">
<a id="idp20472216"></a>
<h2>Syntax</h2>
<pre class="synopsis">kout, ihandle <span class="command"><strong>FLbutBank</strong></span> itype, inumx, inumy, iwidth, iheight, ix, iy, \
iopcode [, kp1] [, kp2] [, kp3] [, kp4] [, kp5] [....] [, kpN]</pre>
</div>
<div class="refsect1" title="Initialization">
<a id="idp20507288"></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>FLbutBank</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>itype</em></span> -- an integer number denoting the appearance of the widget. The valid numbers are:
</p>
<div class="itemizedlist">
<ul class="itemizedlist" type="disc">
<li class="listitem">
<p>1 - normal button</p>
</li>
<li class="listitem">
<p>2 - light button</p>
</li>
<li class="listitem">
<p>3 - check button</p>
</li>
<li class="listitem">
<p>4 - round button</p>
</li>
</ul>
</div>
<p>
You can add 20 to the value to create a "plastic" type button. (Note that there is no Platic Round button. i.e. if you set type to 24 it will look exactly like type 23).
</p>
<p>
<span class="emphasis"><em>inumx</em></span> -- number of buttons in each row of the bank.
</p>
<p>
<span class="emphasis"><em>inumy</em></span> -- number of buttons in each column of the bank
</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>
<p>
<span class="emphasis"><em>iopcode</em></span> -- score opcode type. You have to provide the ascii code of the letter corresponding to the score opcode. At present time only <span class="quote">“<span class="quote">i</span>”</span> (ascii code 105) score statements are supported. A zero value refers to a default value of <span class="quote">“<span class="quote">i</span>”</span>. So both 0 and 105 activates the <a class="link" href="i.html" title="i Statement (Instrument or Note Statement)"><em class="citetitle">i</em></a> opcode. A value of -1 disables this opcode feature.
</p>
</div>
<div class="refsect1" title="Performance">
<a id="idp20514784"></a>
<h2>Performance</h2>
<p>
<span class="emphasis"><em>kout</em></span> -- output value
</p>
<p>
<span class="emphasis"><em>kp1</em></span>, <span class="emphasis"><em>kp2</em></span>, ..., <span class="emphasis"><em>kpN</em></span> -- arguments of the activated instruments.
</p>
<p>
The <span class="emphasis"><em>FLbutBank</em></span> opcode creates a bank of buttons. For example, the following line:
</p>
<div class="informalexample">
<pre class="programlisting">
gkButton,ihb1 FLbutBank 22, 8, 8, 380, 180, 50, 350, 0, 7, 0, 0, 5000, 6000
</pre>
</div>
<p>
will create the this bank:
</p>
<div class="mediaobject">
<img src="images/flbutbank.png" alt="FLbutBank." />
<div class="caption">
<p>FLbutBank.</p>
</div>
</div>
<p>
</p>
<p>
A click to a button checks that button. It may also uncheck a previous checked button belonging to the same bank. So the behaviour is always that of radio-buttons. Notice that each button is labeled with a progressive number. The <span class="emphasis"><em>kout</em></span> argument is filled with that number when corresponding button is checked.
</p>
<p>
<span class="emphasis"><em>FLbutBank</em></span> not only outputs a value but can also activate (or schedule) an instrument provided by the user each time a button is pressed. If the <span class="emphasis"><em>iopcode</em></span> argument is set to a negative number, no instrument is activated so this feature is optional. In order to activate an instrument, <span class="emphasis"><em>iopcode</em></span> must be set to 0 or to 105 (the ascii code of character <span class="quote">“<span class="quote">i</span>”</span>, referring to the <a class="link" href="i.html" title="i Statement (Instrument or Note Statement)"><em class="citetitle">i</em></a> score opcode). P-fields of the activated instrument are <span class="emphasis"><em>kp1</em></span> (instrument number), <span class="emphasis"><em>kp2</em></span> (action time), <span class="emphasis"><em>kp3</em></span> (duration) and so on with user p-fields.
</p>
<p>
The <span class="emphasis"><em>itype</em></span> argument sets the type of buttons identically to the <a class="link" href="FLbutton.html" title="FLbutton"><em class="citetitle">FLbutton</em></a> opcode. By adding 10 to the <span class="emphasis"><em>itype</em></span> argument (i.e. by setting 11 for type 1, 12 for type 2, 13 for type 3 and 14 for type 4), it is possible to skip the current <span class="emphasis"><em>FLbutBank</em></span> value when getting/setting snapshots (see <a class="link" href="ControlFltkGeneral.html" title="General FLTK Widget-related Opcodes"><em class="citetitle">General FLTK Widget-related Opcodes</em></a>). You can also add 10 to "plastic" button types (31 for type 1, 32 for type 2, etc.)
</p>
<p>
FLbutBank is very useful to retrieve snapshots.
</p>
</div>
<div class="refsect1" title="Examples">
<a id="idp20525016"></a>
<h2>Examples</h2>
<p>
Here is an example of the FLbutBank opcode. It uses the file <a class="ulink" href="examples/FLbutBank.csd" target="_top"><em class="citetitle">FLbutBank.csd</em></a>.
</p>
<div class="example">
<a id="idp20525984"></a>
<p class="title">
<strong>Example 237. Example of the FLbutBank 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 FLbutton.wav -W ;;; for file output any platform</span>
<span class="csdtag"></CsOptions></span>
<span class="csdtag"><CsInstruments></span>
<span class="ohdr">sr</span> <span class="op">=</span> 44100
<span class="ohdr">nchnls</span> <span class="op">=</span> 1
<span class="opc">FLpanel</span> "Button Bank", 520, 140, 100, 100
<span class="comment">;itype = 2 ;Light Buttons</span>
itype <span class="op">=</span> 22 <span class="comment">;Plastic Light Buttons</span>
inumx <span class="op">=</span> 10
inumy <span class="op">=</span> 4
iwidth <span class="op">=</span> 500
iheight <span class="op">=</span> 120
ix <span class="op">=</span> 10
iy <span class="op">=</span> 10
iopcode <span class="op">=</span> 0
istarttim <span class="op">=</span> 0
idur <span class="op">=</span> 1
gkbutton, ihbb <span class="opc">FLbutBank</span> itype, inumx, inumy, iwidth, iheight, ix, iy, iopcode, 1, istarttim, idur
<span class="opc">FLpanelEnd</span>
<span class="opc">FLrun</span>
<span class="oblock">instr</span> 1
ibutton <span class="op">=</span> <span class="opc">i</span>(gkbutton)
<span class="opc">prints</span> "Button <span class="op">%</span><span class="opc">i</span> pushed!\\n", ibutton
<span class="oblock">endin</span>
<span class="csdtag"></CsInstruments></span>
<span class="csdtag"><CsScore></span>
<span class="comment">; Real-time performance for 1 hour.</span>
<span class="stamnt">f</span> 0 3600
<span class="stamnt">e</span>
<span class="csdtag"></CsScore></span>
<span class="csdtag"></CsoundSynthesizer></span>
</pre>
</div>
</div>
<p><br class="example-break" />
</p>
</div>
<div class="refsect1" title="See Also">
<a id="idp20528264"></a>
<h2>See Also</h2>
<p>
<a class="link" href="FLbox.html" title="FLbox"><em class="citetitle">FLbox</em></a>,
<a class="link" href="FLbutton.html" title="FLbutton"><em class="citetitle">FLbutton</em></a>,
<a class="link" href="FLprintk.html" title="FLprintk"><em class="citetitle">FLprintk</em></a>,
<a class="link" href="FLprintk2.html" title="FLprintk2"><em class="citetitle">FLprintk2</em></a>,
<a class="link" href="FLvalue.html" title="FLvalue"><em class="citetitle">FLvalue</em></a>
</p>
</div>
<div class="refsect1" title="Credits">
<a id="idp20531200"></a>
<h2>Credits</h2>
<p>Author: Gabriel Maldonado</p>
<p>New in version 4.22</p>
</div>
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