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<h1 class="firstHeading">HowTo:ACIS:Create an Organization Attribute Class</h1>
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<p>Each application developer must create an organization class from which to derive all application specific <a href="/r18/index.php?title=Attributes&action=edit" class="new" title="Attributes">attributes</a>. This class cannot be instantiated. Its purpose is to uniquely identify the owning development organization. This section provides an example of creating an organization attribute class by copying the .hxx and .cxx files that define an existing <a href="/r18/index.php?title=ACIS&action=edit" class="new" title="ACIS">ACIS</a> organization attribute class and modifying those files.</p><table id="toc" class="toc" summary="Contents"><tr><td><div id="toctitle"><h2>Contents</h2></div><ul><li class="toclevel-1"><a href="#Header_File"><span class="tocnumber">1</span> <span class="toctext">Header File</span></a><ul><li class="toclevel-2"><a href="#C.2B.2B_Example"><span class="tocnumber">1.1</span> <span class="toctext">C++ Example</span></a></li><li class="toclevel-2"><a href="#C.2B.2B_Example_2"><span class="tocnumber">1.2</span> <span class="toctext">C++ Example</span></a></li></ul></li><li class="toclevel-1"><a href="#Implementation_File"><span class="tocnumber">2</span> <span class="toctext">Implementation File</span></a><ul><li class="toclevel-2"><a href="#C.2B.2B_Example_3"><span class="tocnumber">2.1</span> <span class="toctext">C++ Example</span></a></li><li class="toclevel-2"><a href="#C.2B.2B_Example_4"><span class="tocnumber">2.2</span> <span class="toctext">C++ Example</span></a></li></ul></li></ul></td></tr></table><script type="text/javascript"> if (window.showTocToggle) { var tocShowText = "show"; var tocHideText = "hide"; showTocToggle(); } </script><a name="Header_File"></a><h2> <span class="mw-headline"> Header File </span></h2><p>To create an organization attribute class header file:</p><ol><li> Name the attribute organization class ATTRIB_<<i>sentinel</i>> where <<i>sentinel</i>> is a unique two or three letter code obtained from Spatials customer support department. In this example, the sentinel ABC is used.</li><li> Copy the at_tsl.hxx file (the header file for the ATTRIB_TSL class) from the ACIS installation directory and rename it at_abc.hxx.</li><li> Change the copied file as shown in the following example. Replace all the bold names in the file (<b>tsl</b> or <b>TSL</b>) with the new organization classs sentinel. In this example, the sentinel ABC (shown in bold italics as <i><b>abc</b></i> or <i><b>ABC</b></i>) is used.</li></ol><blockquote class="templatequote"><div><p><i><b>Note:</b> In this example, the organization attribute class is defined in the KERN module (where ATTRIB_TSL is defined. To define a class in a different module, additional changes to the file would be needed.</i></p></div></blockquote><p>The following example of the attribute header file shows the sentinels that are to be replaced in <b>bold</b> font. In the new file, the new sentinel is shown in<i> <b>bold italic</b></i> font.</p><a name="C.2B.2B_Example"></a><h3> <span class="mw-headline"> C++ Example </span></h3><pre class="source-cpp"><span class="co1">// Attribute declaration for a private container attribute. Each</span><span class="co1">// application developer receives one of these customized for</span><span class="co1">// their use.</span><span class="co1">// All attributes specific to the application developer are then</span><span class="co1">// made derived classes of this attribute, ensuring that</span><span class="co1">// different developers can assign identifiers independently</span><span class="co1">// without mutual interference.</span><span class="kw2">#if</span> !defined<span class="br0">(</span><span class="kw7">ATTRIB_TSL_CLASS</span><span class="br0">)</span><span class="kw2">#define</span> <span class="kw7">ATTRIB_TSL_CLASS</span><span class="kw2">#include</span> dcl_kern.<span class="me1">h</span><span class="kw2">#include</span> attrib.<span class="me1">hxx</span><span class="kw4">extern</span> <span class="kw7">DECL_KERN</span> <span class="kw4">int</span> ATTRIB_TSL_TYPE;<span class="kw2">#define</span> <span class="kw7">ATTRIB_TSL_LEVEL</span> <span class="br0">(</span><span class="kw7">ATTRIB_LEVEL</span> + <span class="nu0">1</span><span class="br0">)</span><span class="kw7">MASTER_ATTRIB_DECL</span><span class="br0">(</span> <span class="kw7">ATTRIB_TSL</span>, KERN <span class="br0">)</span><span class="kw2">#endif</span></pre><p>Example. Original at_tsl.hxx</p><p>After customizing at_tsl.hxx into at_abc.hxx, the organization class file should appear similar to the following example.</p><a name="C.2B.2B_Example_2"></a><h3> <span class="mw-headline"> C++ Example </span></h3><pre class="source-cpp"><span class="kw2">#if</span> !defined<span class="br0">(</span>ATTRIB_ABC_CLASS<span class="br0">)</span><span class="kw2">#define</span> ATTRIB_ABC_CLASS<span class="kw2">#include</span> dcl_kern.<span class="me1">h</span><span class="kw2">#include</span> attrib.<span class="me1">hxx</span><span class="kw4">extern</span> <span class="kw4">int</span> ATTRIB_ABC_TYPE;<span class="kw2">#define</span> ATTRIB_ABC_LEVEL <span class="br0">(</span><span class="kw7">ATTRIB_LEVEL</span> + <span class="nu0">1</span><span class="br0">)</span><span class="kw7">MASTER_ATTRIB_DECL</span><span class="br0">(</span> ATTRIB_ABC, NONE <span class="br0">)</span><span class="kw2">#endif</span></pre><p>Example. Customized at_abc.hxx</p><p>Macro MASTER_ATTR_DECL completes the file. The first argument is the new organization attribute class name; the second is the module name. If creating an attribute that is not meant for export, use "NONE" as the module name.</p><a name="Implementation_File"></a><h2> <span class="mw-headline"> Implementation File </span></h2><p>To create an organization attribute class .cxx implementation file:⌨️ 快捷键说明
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