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<a name="libgimpbase-gimpunit"></a><div class="titlepage"></div>
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<h2><span class="refentrytitle"><a name="libgimpbase-gimpunit.top_of_page"></a>gimpunit</span></h2>
<p>gimpunit — Provides a collection of predefined units and functions for creating
user-defined units.</p>
</td>
<td valign="top" align="right"></td>
</tr></table></div>
<div class="refsynopsisdiv">
<a name="libgimpbase-gimpunit.synopsis"></a><h2>Synopsis</h2>
<pre class="synopsis">enum <a class="link" href="libgimpbase-gimpunit.html#GimpUnit" title="enum GimpUnit">GimpUnit</a>;
<span class="returnvalue">gint</span> <a class="link" href="libgimpbase-gimpunit.html#gimp-unit-get-number-of-units" title="gimp_unit_get_number_of_units ()">gimp_unit_get_number_of_units</a> (<em class="parameter"><code><span class="type">void</span></code></em>);
<span class="returnvalue">gint</span> <a class="link" href="libgimpbase-gimpunit.html#gimp-unit-get-number-of-built-in-units" title="gimp_unit_get_number_of_built_in_units ()">gimp_unit_get_number_of_built_in_units</a>
(<em class="parameter"><code><span class="type">void</span></code></em>);
<a class="link" href="libgimpbase-gimpunit.html#GimpUnit" title="enum GimpUnit"><span class="returnvalue">GimpUnit</span></a> <a class="link" href="libgimpbase-gimpunit.html#gimp-unit-new" title="gimp_unit_new ()">gimp_unit_new</a> (<em class="parameter"><code><span class="type">gchar</span> *identifier</code></em>,
<em class="parameter"><code><span class="type">gdouble</span> factor</code></em>,
<em class="parameter"><code><span class="type">gint</span> digits</code></em>,
<em class="parameter"><code><span class="type">gchar</span> *symbol</code></em>,
<em class="parameter"><code><span class="type">gchar</span> *abbreviation</code></em>,
<em class="parameter"><code><span class="type">gchar</span> *singular</code></em>,
<em class="parameter"><code><span class="type">gchar</span> *plural</code></em>);
<span class="returnvalue">gboolean</span> <a class="link" href="libgimpbase-gimpunit.html#gimp-unit-get-deletion-flag" title="gimp_unit_get_deletion_flag ()">gimp_unit_get_deletion_flag</a> (<em class="parameter"><code><a class="link" href="libgimpbase-gimpunit.html#GimpUnit" title="enum GimpUnit"><span class="type">GimpUnit</span></a> unit</code></em>);
<span class="returnvalue">void</span> <a class="link" href="libgimpbase-gimpunit.html#gimp-unit-set-deletion-flag" title="gimp_unit_set_deletion_flag ()">gimp_unit_set_deletion_flag</a> (<em class="parameter"><code><a class="link" href="libgimpbase-gimpunit.html#GimpUnit" title="enum GimpUnit"><span class="type">GimpUnit</span></a> unit</code></em>,
<em class="parameter"><code><span class="type">gboolean</span> deletion_flag</code></em>);
<span class="returnvalue">gdouble</span> <a class="link" href="libgimpbase-gimpunit.html#gimp-unit-get-factor" title="gimp_unit_get_factor ()">gimp_unit_get_factor</a> (<em class="parameter"><code><a class="link" href="libgimpbase-gimpunit.html#GimpUnit" title="enum GimpUnit"><span class="type">GimpUnit</span></a> unit</code></em>);
<span class="returnvalue">gint</span> <a class="link" href="libgimpbase-gimpunit.html#gimp-unit-get-digits" title="gimp_unit_get_digits ()">gimp_unit_get_digits</a> (<em class="parameter"><code><a class="link" href="libgimpbase-gimpunit.html#GimpUnit" title="enum GimpUnit"><span class="type">GimpUnit</span></a> unit</code></em>);
const <span class="returnvalue">gchar</span> * <a class="link" href="libgimpbase-gimpunit.html#gimp-unit-get-identifier" title="gimp_unit_get_identifier ()">gimp_unit_get_identifier</a> (<em class="parameter"><code><a class="link" href="libgimpbase-gimpunit.html#GimpUnit" title="enum GimpUnit"><span class="type">GimpUnit</span></a> unit</code></em>);
const <span class="returnvalue">gchar</span> * <a class="link" href="libgimpbase-gimpunit.html#gimp-unit-get-symbol" title="gimp_unit_get_symbol ()">gimp_unit_get_symbol</a> (<em class="parameter"><code><a class="link" href="libgimpbase-gimpunit.html#GimpUnit" title="enum GimpUnit"><span class="type">GimpUnit</span></a> unit</code></em>);
const <span class="returnvalue">gchar</span> * <a class="link" href="libgimpbase-gimpunit.html#gimp-unit-get-abbreviation" title="gimp_unit_get_abbreviation ()">gimp_unit_get_abbreviation</a> (<em class="parameter"><code><a class="link" href="libgimpbase-gimpunit.html#GimpUnit" title="enum GimpUnit"><span class="type">GimpUnit</span></a> unit</code></em>);
const <span class="returnvalue">gchar</span> * <a class="link" href="libgimpbase-gimpunit.html#gimp-unit-get-singular" title="gimp_unit_get_singular ()">gimp_unit_get_singular</a> (<em class="parameter"><code><a class="link" href="libgimpbase-gimpunit.html#GimpUnit" title="enum GimpUnit"><span class="type">GimpUnit</span></a> unit</code></em>);
const <span class="returnvalue">gchar</span> * <a class="link" href="libgimpbase-gimpunit.html#gimp-unit-get-plural" title="gimp_unit_get_plural ()">gimp_unit_get_plural</a> (<em class="parameter"><code><a class="link" href="libgimpbase-gimpunit.html#GimpUnit" title="enum GimpUnit"><span class="type">GimpUnit</span></a> unit</code></em>);
#define <a class="link" href="libgimpbase-gimpunit.html#GIMP-TYPE-UNIT:CAPS" title="GIMP_TYPE_UNIT">GIMP_TYPE_UNIT</a>
#define <a class="link" href="libgimpbase-gimpunit.html#GIMP-TYPE-PARAM-UNIT:CAPS" title="GIMP_TYPE_PARAM_UNIT">GIMP_TYPE_PARAM_UNIT</a>
#define <a class="link" href="libgimpbase-gimpunit.html#GIMP-IS-PARAM-SPEC-UNIT:CAPS" title="GIMP_IS_PARAM_SPEC_UNIT()">GIMP_IS_PARAM_SPEC_UNIT</a> (pspec)
<span class="returnvalue">GParamSpec</span> * <a class="link" href="libgimpbase-gimpunit.html#gimp-param-spec-unit" title="gimp_param_spec_unit ()">gimp_param_spec_unit</a> (<em class="parameter"><code>const <span class="type">gchar</span> *name</code></em>,
<em class="parameter"><code>const <span class="type">gchar</span> *nick</code></em>,
<em class="parameter"><code>const <span class="type">gchar</span> *blurb</code></em>,
<em class="parameter"><code><span class="type">gboolean</span> allow_pixels</code></em>,
<em class="parameter"><code><span class="type">gboolean</span> allow_percent</code></em>,
<em class="parameter"><code><a class="link" href="libgimpbase-gimpunit.html#GimpUnit" title="enum GimpUnit"><span class="type">GimpUnit</span></a> default_value</code></em>,
<em class="parameter"><code><span class="type">GParamFlags</span> flags</code></em>);
#define <a class="link" href="libgimpbase-gimpunit.html#GIMP-VALUE-HOLDS-UNIT:CAPS" title="GIMP_VALUE_HOLDS_UNIT()">GIMP_VALUE_HOLDS_UNIT</a> (value)
</pre>
</div>
<div class="refsect1">
<a name="libgimpbase-gimpunit.description"></a><h2>Description</h2>
<p>
Provides a collection of predefined units and functions for creating
user-defined units.
</p>
</div>
<div class="refsect1">
<a name="libgimpbase-gimpunit.details"></a><h2>Details</h2>
<div class="refsect2">
<a name="GimpUnit"></a><h3>enum GimpUnit</h3>
<pre class="programlisting">typedef enum {
GIMP_UNIT_PIXEL = 0,
GIMP_UNIT_INCH = 1,
GIMP_UNIT_MM = 2,
GIMP_UNIT_POINT = 3,
GIMP_UNIT_PICA = 4,
GIMP_UNIT_END = 5,
GIMP_UNIT_PERCENT = 65536 /*< pdb-skip >*/
} GimpUnit;
</pre>
<p>
</p>
</div>
<hr>
<div class="refsect2">
<a name="gimp-unit-get-number-of-units"></a><h3>gimp_unit_get_number_of_units ()</h3>
<pre class="programlisting"><span class="returnvalue">gint</span> gimp_unit_get_number_of_units (<em class="parameter"><code><span class="type">void</span></code></em>);</pre>
<p>
Returns the number of units which are known to the <a class="link" href="libgimpbase-gimpunit.html#GimpUnit" title="enum GimpUnit"><span class="type">GimpUnit</span></a> system.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody><tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>The number of defined units.</td>
</tr></tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="gimp-unit-get-number-of-built-in-units"></a><h3>gimp_unit_get_number_of_built_in_units ()</h3>
<pre class="programlisting"><span class="returnvalue">gint</span> gimp_unit_get_number_of_built_in_units
(<em class="parameter"><code><span class="type">void</span></code></em>);</pre>
<p>
Returns the number of <a class="link" href="libgimpbase-gimpunit.html#GimpUnit" title="enum GimpUnit"><span class="type">GimpUnit</span></a>'s which are hardcoded in the unit system
(UNIT_INCH, UNIT_MM, UNIT_POINT, UNIT_PICA and the two "pseudo unit"
UNIT_PIXEL).
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody><tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>The number of built-in units.</td>
</tr></tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="gimp-unit-new"></a><h3>gimp_unit_new ()</h3>
<pre class="programlisting"><a class="link" href="libgimpbase-gimpunit.html#GimpUnit" title="enum GimpUnit"><span class="returnvalue">GimpUnit</span></a> gimp_unit_new (<em class="parameter"><code><span class="type">gchar</span> *identifier</code></em>,
<em class="parameter"><code><span class="type">gdouble</span> factor</code></em>,
<em class="parameter"><code><span class="type">gint</span> digits</code></em>,
<em class="parameter"><code><span class="type">gchar</span> *symbol</code></em>,
<em class="parameter"><code><span class="type">gchar</span> *abbreviation</code></em>,
<em class="parameter"><code><span class="type">gchar</span> *singular</code></em>,
<em class="parameter"><code><span class="type">gchar</span> *plural</code></em>);</pre>
<p>
Returns the integer ID of the new <a class="link" href="libgimpbase-gimpunit.html#GimpUnit" title="enum GimpUnit"><span class="type">GimpUnit</span></a>.
</p>
<p>
Note that a new unit is always created with it's deletion flag
set to <code class="literal">TRUE</code>. You will have to set it to <code class="literal">FALSE</code> with
<a class="link" href="libgimpbase-gimpunit.html#gimp-unit-set-deletion-flag" title="gimp_unit_set_deletion_flag ()"><code class="function">gimp_unit_set_deletion_flag()</code></a> to make the unit definition persistent.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>identifier</code></em> :</span></p></td>
<td>The unit's identifier string.</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>factor</code></em> :</span></p></td>
<td>The unit's factor (how many units are in one inch).</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>digits</code></em> :</span></p></td>
<td>The unit's suggested number of digits (see <a class="link" href="libgimpbase-gimpunit.html#gimp-unit-get-digits" title="gimp_unit_get_digits ()"><code class="function">gimp_unit_get_digits()</code></a>).</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>symbol</code></em> :</span></p></td>
<td>The symbol of the unit (e.g. "''" for inch).</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>abbreviation</code></em> :</span></p></td>
<td>The abbreviation of the unit.</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>singular</code></em> :</span></p></td>
<td>The singular form of the unit.</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>plural</code></em> :</span></p></td>
<td>The plural form of the unit.</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>The ID of the new unit.</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="gimp-unit-get-deletion-flag"></a><h3>gimp_unit_get_deletion_flag ()</h3>
<pre class="programlisting"><span class="returnvalue">gboolean</span> gimp_unit_get_deletion_flag (<em class="parameter"><code><a class="link" href="libgimpbase-gimpunit.html#GimpUnit" title="enum GimpUnit"><span class="type">GimpUnit</span></a> unit</code></em>);</pre>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>unit</code></em> :</span></p></td>
<td>The unit you want to know the <em class="parameter"><code>deletion_flag</code></em> of.</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>The unit's <em class="parameter"><code>deletion_flag</code></em>.</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="gimp-unit-set-deletion-flag"></a><h3>gimp_unit_set_deletion_flag ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span> gimp_unit_set_deletion_flag (<em class="parameter"><code><a class="link" href="libgimpbase-gimpunit.html#GimpUnit" title="enum GimpUnit"><span class="type">GimpUnit</span></a> unit</code></em>,
<em class="parameter"><code><span class="type">gboolean</span> deletion_flag</code></em>);</pre>
<p>
Sets a <a class="link" href="libgimpbase-gimpunit.html#GimpUnit" title="enum GimpUnit"><span class="type">GimpUnit</span></a>'s <em class="parameter"><code>deletion_flag</code></em>. If the <em class="parameter"><code>deletion_flag</code></em> of a unit is
<code class="literal">TRUE</code> when GIMP exits, this unit will not be saved in the users's
"unitrc" file.
</p>
<p>
Trying to change the <em class="parameter"><code>deletion_flag</code></em> of a built-in unit will be silently
ignored.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>unit</code></em> :</span></p></td>
<td>The unit you want to set the <em class="parameter"><code>deletion_flag</code></em> for.</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>deletion_flag</code></em> :</span></p></td>
<td>The new deletion_flag.</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="gimp-unit-get-factor"></a><h3>gimp_unit_get_factor ()</h3>
<pre class="programlisting"><span class="returnvalue">gdouble</span> gimp_unit_get_factor (<em class="parameter"><code><a class="link" href="libgimpbase-gimpunit.html#GimpUnit" title="enum GimpUnit"><span class="type">GimpUnit</span></a> unit</code></em>);</pre>
<p>
A <a class="link" href="libgimpbase-gimpunit.html#GimpUnit" title="enum GimpUnit"><span class="type">GimpUnit</span></a>'s <em class="parameter"><code>factor</code></em> is defined to be:
</p>
<p>
distance_in_units == (<em class="parameter"><code>factor</code></em> * distance_in_inches)
</p>
<p>
Returns 0 for <em class="parameter"><code>unit</code></em> == GIMP_UNIT_PIXEL.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>unit</code></em> :</span></p></td>
<td>The unit you want to know the factor of.</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>The unit's factor.</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="gimp-unit-get-digits"></a><h3>gimp_unit_get_digits ()</h3>
<pre class="programlisting"><span class="returnvalue">gint</span> gimp_unit_get_digits (<em class="parameter"><code><a class="link" href="libgimpbase-gimpunit.html#GimpUnit" title="enum GimpUnit"><span class="type">GimpUnit</span></a> unit</code></em>);</pre>
<p>
Returns the number of digits an entry field should provide to get
approximately the same accuracy as an inch input field with two digits.
</p>
<p>
Returns 0 for <em class="parameter"><code>unit</code></em> == GIMP_UNIT_PIXEL.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>unit</code></em> :</span></p></td>
<td>The unit you want to know the digits.</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>The suggested number of digits.</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="gimp-unit-get-identifier"></a><h3>gimp_unit_get_identifier ()</h3>
<pre class="programlisting">const <span class="returnvalue">gchar</span> * gimp_unit_get_identifier (<em class="parameter"><code><a class="link" href="libgimpbase-gimpunit.html#GimpUnit" title="enum GimpUnit"><span class="type">GimpUnit</span></a> unit</code></em>);</pre>
<p>
This is an unstranslated string and must not be changed or freed.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>unit</code></em> :</span></p></td>
<td>The unit you want to know the identifier of.</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>The unit's identifier.</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="gimp-unit-get-symbol"></a><h3>gimp_unit_get_symbol ()</h3>
<pre class="programlisting">const <span class="returnvalue">gchar</span> * gimp_unit_get_symbol (<em class="parameter"><code><a class="link" href="libgimpbase-gimpunit.html#GimpUnit" title="enum GimpUnit"><span class="type">GimpUnit</span></a> unit</code></em>);</pre>
<p>
This is e.g. "''" for UNIT_INCH.
</p>
<p>
NOTE: This string must not be changed or freed.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>unit</code></em> :</span></p></td>
<td>The unit you want to know the symbol of.</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>The unit's symbol.</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="gimp-unit-get-abbreviation"></a><h3>gimp_unit_get_abbreviation ()</h3>
<pre class="programlisting">const <span class="returnvalue">gchar</span> * gimp_unit_get_abbreviation (<em class="parameter"><code><a class="link" href="libgimpbase-gimpunit.html#GimpUnit" title="enum GimpUnit"><span class="type">GimpUnit</span></a> unit</code></em>);</pre>
<p>
For built-in units, this function returns the translated abbreviation
of the unit.
</p>
<p>
NOTE: This string must not be changed or freed.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>unit</code></em> :</span></p></td>
<td>The unit you want to know the abbreviation of.</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>The unit's abbreviation.</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="gimp-unit-get-singular"></a><h3>gimp_unit_get_singular ()</h3>
<pre class="programlisting">const <span class="returnvalue">gchar</span> * gimp_unit_get_singular (<em class="parameter"><code><a class="link" href="libgimpbase-gimpunit.html#GimpUnit" title="enum GimpUnit"><span class="type">GimpUnit</span></a> unit</code></em>);</pre>
<p>
For built-in units, this function returns the translated singular form
of the unit's name.
</p>
<p>
NOTE: This string must not be changed or freed.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>unit</code></em> :</span></p></td>
<td>The unit you want to know the singular form of.</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>The unit's singular form.</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="gimp-unit-get-plural"></a><h3>gimp_unit_get_plural ()</h3>
<pre class="programlisting">const <span class="returnvalue">gchar</span> * gimp_unit_get_plural (<em class="parameter"><code><a class="link" href="libgimpbase-gimpunit.html#GimpUnit" title="enum GimpUnit"><span class="type">GimpUnit</span></a> unit</code></em>);</pre>
<p>
For built-in units, this function returns the translated plural form
of the unit's name.
</p>
<p>
NOTE: This string must not be changed or freed.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>unit</code></em> :</span></p></td>
<td>The unit you want to know the plural form of.</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>The unit's plural form.</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="GIMP-TYPE-UNIT:CAPS"></a><h3>GIMP_TYPE_UNIT</h3>
<pre class="programlisting">#define GIMP_TYPE_UNIT (gimp_unit_get_type ())
</pre>
<p>
<a class="link" href="libgimpbase-gimpunit.html#GIMP-TYPE-UNIT:CAPS" title="GIMP_TYPE_UNIT"><span class="type">GIMP_TYPE_UNIT</span></a> is a <span class="type">GType</span> derived from <span class="type">G_TYPE_INT</span>.
</p>
</div>
<hr>
<div class="refsect2">
<a name="GIMP-TYPE-PARAM-UNIT:CAPS"></a><h3>GIMP_TYPE_PARAM_UNIT</h3>
<pre class="programlisting">#define GIMP_TYPE_PARAM_UNIT (gimp_param_unit_get_type ())
</pre>
<p>
</p>
</div>
<hr>
<div class="refsect2">
<a name="GIMP-IS-PARAM-SPEC-UNIT:CAPS"></a><h3>GIMP_IS_PARAM_SPEC_UNIT()</h3>
<pre class="programlisting">#define GIMP_IS_PARAM_SPEC_UNIT(pspec) (G_TYPE_CHECK_INSTANCE_TYPE ((pspec), GIMP_TYPE_PARAM_UNIT))
</pre>
<p>
</p>
</div>
<hr>
<div class="refsect2">
<a name="gimp-param-spec-unit"></a><h3>gimp_param_spec_unit ()</h3>
<pre class="programlisting"><span class="returnvalue">GParamSpec</span> * gimp_param_spec_unit (<em class="parameter"><code>const <span class="type">gchar</span> *name</code></em>,
<em class="parameter"><code>const <span class="type">gchar</span> *nick</code></em>,
<em class="parameter"><code>const <span class="type">gchar</span> *blurb</code></em>,
<em class="parameter"><code><span class="type">gboolean</span> allow_pixels</code></em>,
<em class="parameter"><code><span class="type">gboolean</span> allow_percent</code></em>,
<em class="parameter"><code><a class="link" href="libgimpbase-gimpunit.html#GimpUnit" title="enum GimpUnit"><span class="type">GimpUnit</span></a> default_value</code></em>,
<em class="parameter"><code><span class="type">GParamFlags</span> flags</code></em>);</pre>
<p>
Creates a param spec to hold a units param.
See <code class="function">g_param_spec_internal()</code> for more information.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>name</code></em> :</span></p></td>
<td>Canonical name of the param</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>nick</code></em> :</span></p></td>
<td>Nickname of the param</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>blurb</code></em> :</span></p></td>
<td>Brief desciption of param.</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>allow_pixels</code></em> :</span></p></td>
<td>Whether "pixels" is an allowed unit.</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>allow_percent</code></em> :</span></p></td>
<td>Whether "perecent" is an allowed unit.</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>default_value</code></em> :</span></p></td>
<td>Unit to use if none is assigned.</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>flags</code></em> :</span></p></td>
<td>a combination of <span class="type">GParamFlags</span>
</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>a newly allocated <span class="type">GParamSpec</span> instance</td>
</tr>
</tbody>
</table></div>
<p class="since">Since GIMP 2.4</p>
</div>
<hr>
<div class="refsect2">
<a name="GIMP-VALUE-HOLDS-UNIT:CAPS"></a><h3>GIMP_VALUE_HOLDS_UNIT()</h3>
<pre class="programlisting">#define GIMP_VALUE_HOLDS_UNIT(value) (G_TYPE_CHECK_VALUE_TYPE ((value), GIMP_TYPE_UNIT))
</pre>
<p>
</p>
</div>
</div>
<div class="refsect1">
<a name="libgimpbase-gimpunit.see-also"></a><h2>See Also</h2>
<p>
<span class="type">GimpUnitMenu</span>
</p>
<p>
<span class="type">GimpSizeEntry</span>
</p>
</div>
</div>
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