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<H2>
<BR>
18.4.3 FORMS Objects
</H2>

<P>
Besides methods specific to particular kinds of FORMS objects, all
FORMS objects also have the following methods:

<P>
<dl><dt><b><a name='l2h-3209'><tt class='method'>set_call_back</tt></a></b> (<var>function, argument</var>)
<dd>
Set the object's callback function and argument.  When the object
needs interaction, the callback function will be called with two
arguments: the object, and the callback argument.  (FORMS objects
without a callback function are returned by <tt class="function">fl.do_forms()</tt>
or <tt class="function">fl.check_forms()</tt> when they need interaction.)  Call this
method without arguments to remove the callback function.
</dl>

<P>
<dl><dt><b><a name='l2h-3210'><tt class='method'>delete_object</tt></a></b> ()
<dd>
  Delete the object.
</dl>

<P>
<dl><dt><b><a name='l2h-3211'><tt class='method'>show_object</tt></a></b> ()
<dd>
  Show the object.
</dl>

<P>
<dl><dt><b><a name='l2h-3212'><tt class='method'>hide_object</tt></a></b> ()
<dd>
  Hide the object.
</dl>

<P>
<dl><dt><b><a name='l2h-3213'><tt class='method'>redraw_object</tt></a></b> ()
<dd>
  Redraw the object.
</dl>

<P>
<dl><dt><b><a name='l2h-3214'><tt class='method'>freeze_object</tt></a></b> ()
<dd>
  Freeze the object.
</dl>

<P>
<dl><dt><b><a name='l2h-3215'><tt class='method'>unfreeze_object</tt></a></b> ()
<dd>
  Unfreeze the object.
</dl>

<P>
FORMS objects have these data attributes; see the FORMS documentation:

<P>
<table border align="center" style="border-collapse: collapse">
  <thead>
    <tr>
      <th align="left"><b>Name</b>&nbsp;</th>
      <th align="left"><b>C Type</b>&nbsp;</th>
      <th align="left"><b>Meaning</b>&nbsp;</th>
    </thead>
  <tbody valign='baseline'>
    <tr><td align="left" valign="baseline"><tt class="member">objclass</tt></td>
        <td align="left">int (read-only)</td>
        <td align="left">object class</td>
    <tr><td align="left" valign="baseline"><tt class="member">type</tt></td>
        <td align="left">int (read-only)</td>
        <td align="left">object type</td>
    <tr><td align="left" valign="baseline"><tt class="member">boxtype</tt></td>
        <td align="left">int</td>
        <td align="left">box type</td>
    <tr><td align="left" valign="baseline"><tt class="member">x</tt></td>
        <td align="left">float</td>
        <td align="left">x origin</td>
    <tr><td align="left" valign="baseline"><tt class="member">y</tt></td>
        <td align="left">float</td>
        <td align="left">y origin</td>
    <tr><td align="left" valign="baseline"><tt class="member">w</tt></td>
        <td align="left">float</td>
        <td align="left">width</td>
    <tr><td align="left" valign="baseline"><tt class="member">h</tt></td>
        <td align="left">float</td>
        <td align="left">height</td>
    <tr><td align="left" valign="baseline"><tt class="member">col1</tt></td>
        <td align="left">int</td>
        <td align="left">primary color</td>
    <tr><td align="left" valign="baseline"><tt class="member">col2</tt></td>
        <td align="left">int</td>
        <td align="left">secondary color</td>
    <tr><td align="left" valign="baseline"><tt class="member">align</tt></td>
        <td align="left">int</td>
        <td align="left">alignment</td>
    <tr><td align="left" valign="baseline"><tt class="member">lcol</tt></td>
        <td align="left">int</td>
        <td align="left">label color</td>
    <tr><td align="left" valign="baseline"><tt class="member">lsize</tt></td>
        <td align="left">float</td>
        <td align="left">label font size</td>
    <tr><td align="left" valign="baseline"><tt class="member">label</tt></td>
        <td align="left">string</td>
        <td align="left">label string</td>
    <tr><td align="left" valign="baseline"><tt class="member">lstyle</tt></td>
        <td align="left">int</td>
        <td align="left">label style</td>
    <tr><td align="left" valign="baseline"><tt class="member">pushed</tt></td>
        <td align="left">int (read-only)</td>
        <td align="left">(see FORMS docs)</td>
    <tr><td align="left" valign="baseline"><tt class="member">focus</tt></td>
        <td align="left">int (read-only)</td>
        <td align="left">(see FORMS docs)</td>
    <tr><td align="left" valign="baseline"><tt class="member">belowmouse</tt></td>
        <td align="left">int (read-only)</td>
        <td align="left">(see FORMS docs)</td>
    <tr><td align="left" valign="baseline"><tt class="member">frozen</tt></td>
        <td align="left">int (read-only)</td>
        <td align="left">(see FORMS docs)</td>
    <tr><td align="left" valign="baseline"><tt class="member">active</tt></td>
        <td align="left">int (read-only)</td>
        <td align="left">(see FORMS docs)</td>
    <tr><td align="left" valign="baseline"><tt class="member">input</tt></td>
        <td align="left">int (read-only)</td>
        <td align="left">(see FORMS docs)</td>
    <tr><td align="left" valign="baseline"><tt class="member">visible</tt></td>
        <td align="left">int (read-only)</td>
        <td align="left">(see FORMS docs)</td>
    <tr><td align="left" valign="baseline"><tt class="member">radio</tt></td>
        <td align="left">int (read-only)</td>
        <td align="left">(see FORMS docs)</td>
    <tr><td align="left" valign="baseline"><tt class="member">automatic</tt></td>
        <td align="left">int (read-only)</td>
        <td align="left">(see FORMS docs)</td></tbody>
</table>

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