File: Grip.xml

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<sect1 id="Grip_Widget">
<title>Grip Widget</title>
<!-- .XS -->
<!-- 	Grip Widget -->
<!-- .XE -->
<!-- .IN "Grip widget" "" "@DEF@" -->
<literallayout class="monospaced">
<!-- .TA 2.0i -->
<!-- .ta 2.0i -->
<!-- .sp -->
Application header file	&lt;X11/Xaw/Grip.h&gt;
<!-- .IN "Grip.h" "" -->
Class header file	&lt;X11/Xaw/GripP.h&gt;
<!-- .IN "GripP.h" "" -->
Class	gripWidgetClass
<!-- .IN "gripWidgetClass" "" -->
Class Name	Grip
<!-- .IN "Grip widget" "class name" -->
Superclass	Simple
<!-- .sp -->
</literallayout>
<para>
<!-- .LP -->
The Grip widget provides a small rectangular region in which user input
events (such as ButtonPress or ButtonRelease) may be handled.  The most
common use for the Grip widget is as an attachment point for visually
repositioning an object, such as the pane border in a Paned widget.
</para>
<sect2 id='Grip::Resources'>
<title>Resources</title>
<para>
<!-- .LP -->
When creating a Grip widget instance, the following resources are
retrieved from the argument list or from the resource database:
</para>
<para>
<!-- .LP -->
<!-- .IN "Grip widget" "resources" -->
<informaltable>
  <tgroup cols='5' align='center'>
  <colspec colname='c1'/>
  <colspec colname='c2'/>
  <colspec colname='c3'/>
  <colspec colname='c4'/>
  <colspec colname='c5'/>
  <thead>
    <row>
      <entry>Name</entry>
      <entry>Class</entry>
      <entry>Type</entry>
      <entry>Notes</entry>
      <entry>Default Value</entry>
    </row>
  </thead>
  <tbody>
    <row>
      <entry>accelerators</entry>
      <entry>Accelerators</entry>
      <entry>AcceleratorTable</entry>
      <entry></entry>
      <entry>NULL</entry>
    </row>
    <row>
      <entry>ancestorSensitive</entry>
      <entry>AncestorSensitive</entry>
      <entry>Boolean</entry>
      <entry>D</entry>
      <entry>True</entry>
    </row>
    <row>
      <entry>background</entry>
      <entry>Background</entry>
      <entry>Pixel</entry>
      <entry></entry>
      <entry>XtDefaultBackground</entry>
    </row>
    <row>
      <entry>backgroundPixmap</entry>
      <entry>Pixmap</entry>
      <entry>Pixmap</entry>
      <entry></entry>
      <entry>XtUnspecifiedPixmap</entry>
    </row>
    <row>
      <entry>borderColor</entry>
      <entry>BorderColor</entry>
      <entry>Pixel</entry>
      <entry></entry>
      <entry>XtDefaultForeground</entry>
    </row>
    <row>
      <entry>borderPixmap</entry>
      <entry>Pixmap</entry>
      <entry>Pixmap</entry>
      <entry></entry>
      <entry>XtUnspecifiedPixmap</entry>
    </row>
    <row>
      <entry>borderWidth</entry>
      <entry>BorderWidth</entry>
      <entry>Dimension</entry>
      <entry></entry>
      <entry>0</entry>
    </row>
    <row>
      <entry>callback</entry>
      <entry>Callback</entry>
      <entry>Callback</entry>
      <entry></entry>
      <entry>NULL</entry>
    </row>
    <row>
      <entry>colormap</entry>
      <entry>Colormap</entry>
      <entry>Colormap</entry>
      <entry></entry>
      <entry>Parent's Colormap</entry>
    </row>
    <row>
      <entry>cursor</entry>
      <entry>Cursor</entry>
      <entry>Cursor</entry>
      <entry></entry>
      <entry>None</entry>
    </row>
    <row>
      <entry>cursorName</entry>
      <entry>Cursor</entry>
      <entry>String</entry>
      <entry></entry>
      <entry>NULL</entry>
    </row>
    <row>
      <entry>depth</entry>
      <entry>Depth</entry>
      <entry>int</entry>
      <entry>C</entry>
      <entry>Parent's Depth</entry>
    </row>
    <row>
      <entry>destroyCallback</entry>
      <entry>Callback</entry>
      <entry>XtCallbackList</entry>
      <entry></entry>
      <entry>NULL</entry>
    </row>
    <row>
      <entry>foreground</entry>
      <entry>Foreground</entry>
      <entry>Pixel</entry>
      <entry></entry>
      <entry>XtDefaultForeground</entry>
    </row>
    <row>
      <entry>height</entry>
      <entry>Height</entry>
      <entry>Dimension</entry>
      <entry></entry>
      <entry>8</entry>
    </row>
    <row>
      <entry>insensitiveBorder</entry>
      <entry>Insensitive</entry>
      <entry>Pixmap</entry>
      <entry></entry>
      <entry>GreyPixmap</entry>
    </row>
    <row>
      <entry>international</entry>
      <entry>International</entry>
      <entry>Boolean</entry>
      <entry>C</entry>
      <entry>False</entry>
    </row>
    <row>
      <entry>mappedWhenManaged</entry>
      <entry>MappedWhenManaged</entry>
      <entry>Boolean</entry>
      <entry></entry>
      <entry>True</entry>
    </row>
    <row>
      <entry>pointerColor</entry>
      <entry>Foreground</entry>
      <entry>Pixel</entry>
      <entry></entry>
      <entry>XtDefaultForeground</entry>
    </row>
    <row>
      <entry>pointerColorBackground</entry>
      <entry>Background</entry>
      <entry>Pixel</entry>
      <entry></entry>
      <entry>XtDefaultBackground</entry>
    </row>
    <row>
      <entry>screen</entry>
      <entry>Screen</entry>
      <entry>Screen</entry>
      <entry>R</entry>
      <entry>Parent's Screen</entry>
    </row>
    <row>
      <entry>sensitive</entry>
      <entry>Sensitive</entry>
      <entry>Boolean</entry>
      <entry></entry>
      <entry>True</entry>
    </row>
    <row>
      <entry>translations</entry>
      <entry>Translations</entry>
      <entry>TranslationTable</entry>
      <entry></entry>
      <entry>NULL</entry>
    </row>
    <row>
      <entry>width</entry>
      <entry>Width</entry>
      <entry>Dimension</entry>
      <entry></entry>
      <entry>8</entry>
    </row>
    <row>
      <entry>x</entry>
      <entry>Position</entry>
      <entry>Position</entry>
      <entry></entry>
      <entry>0</entry>
    </row>
    <row>
      <entry>y</entry>
      <entry>Position</entry>
      <entry>Position</entry>
      <entry></entry>
      <entry>0</entry>
    </row>
  </tbody>
  </tgroup>
</informaltable>
<!-- .Ac -->
<!-- .As -->
<!-- .Bg -->
<!-- .Gp -->
<!-- .Bc -->
<!-- .Bp -->
<!-- .Bw -->
<variablelist>
  <varlistentry>
    <term>
      <function>callback</function>
    </term>
    <listitem>
      <para>
All routines on this list are called whenever the <function>GripAction</function>
action routine is invoked.  The <emphasis remap='I'>call_data</emphasis> contains all
information passed to the action routine.  A detailed description
is given below in the <function>Grip Actions</function> section.
<!-- .Cm -->
<!-- .Cu -->
<!-- .Cn -->
<!-- .Dp -->
<!-- .Dc -->
      </para>
    </listitem>
  </varlistentry>
  <varlistentry>
    <term>
      <function>foreground</function>
    </term>
    <listitem>
      <para>
A pixel value which indexes the widget's colormap to derive the color
used to flood fill the entire Grip widget.
<!-- .Hw -->
<!-- .Ib -->
<!-- .Ix -->
<!-- .Mm -->
<!-- .Pf -->
<!-- .Pb -->
<!-- .Sc -->
<!-- .Se -->
<!-- .Tr -->
<!-- .Xy -->
    </para>
  </listitem>
  </varlistentry>
</variablelist>
</para>
</sect2>
<sect2 id="Grip_Actions">
<title>Grip Actions</title>
<!-- .IN "Grip widget" "actions" -->
<para>
<!-- .LP -->
The Grip widget does not declare any default event translation bindings,
but it does declare a single action routine named <function>GripAction</function>.  The
<!-- .IN "Grip widget" "GripAction routine" -->
client specifies an arbitrary event translation table, optionally giving
parameters to the <function>GripAction</function> routine.
</para>
<para>
<!-- .LP -->
The <function>GripAction</function> routine executes the callbacks on the
<function>callback</function> list, passing as <function>call_data</function> a pointer to a
<function>XawGripCallData</function> structure, defined in the Grip widget's application
header file.
</para>
<para>
<!-- .LP -->
<literallayout class="monospaced">
<!-- .TA .5i 2.25i -->
<!-- .ta .5i 2.25i -->
<!-- .IN "XawGripCallData" "" "@DEF@" -->
<!-- .IN "XawGripCallDataRec" "" "@DEF@" -->
<!-- .sp -->
typedef struct _XawGripCallData {
	XEvent *event;
	String *params;
	Cardinal num_params;
} XawGripCallDataRec, *XawGripCallData,
  GripCallDataRec, *GripCallData; /* supported for R4 compatibility */
<!-- .IN "XawGripCallDataRec" "" -->
<!-- .IN "XawGripCallData" "" -->
<!-- .IN "GripCallData" "" -->
<!-- .sp -->
</literallayout>
</para>
<para>
<!-- .LP -->
In this structure, the <emphasis remap='I'>event</emphasis> is a pointer to the input event that
triggered the action.  <emphasis remap='I'>params</emphasis> and <emphasis remap='I'>num_params</emphasis> give the string
parameters specified in the translation table for the particular event
binding.
<!-- .IN "Grip widget" "GripAction table" -->
</para>
<para>
<!-- .LP -->
The following is an example of a translation table that uses the GripAction:
</para>
<para>
<!-- .LP -->
<literallayout class="monospaced">
<!-- .TA .5i 2.5i -->
<!-- .ta .5i 2.5i -->
<!-- .sp -->
	&lt;Btn1Down&gt;:	GripAction(press)
	&lt;Btn1Motion&gt;:	GripAction(move)
	&lt;Btn1Up&gt;:	GripAction(release)
<!-- .sp -->
</literallayout>
For a complete description of the format of translation tables, see the
<emphasis remap='I'>X Toolkit Intrinsics - C Language Interface</emphasis>.

</para>
</sect2>
</sect1>