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102 lines
4.0 KiB
HTML
102 lines
4.0 KiB
HTML
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
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<html>
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<head>
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<meta http-equiv="content-type" content="text/html; charset=UTF-8">
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<title>Returns a handle to an already running instance of a COM object</title>
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</head>
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<body class="docs"><div id="layout">
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<div id="layout-content"><div id="function.com-get-active-object" class="refentry">
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<div class="refnamediv">
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<h1 class="refname">com_get_active_object</h1>
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<p class="verinfo">(PHP 5, PHP 7)</p><p class="refpurpose"><span class="refname">com_get_active_object</span> — <span class="dc-title">Returns a handle to an already running instance of a COM object</span></p>
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</div>
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<div class="refsect1 description" id="refsect1-function.com-get-active-object-description">
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<h3 class="title">说明</h3>
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<div class="methodsynopsis dc-description">
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<span class="methodname"><strong>com_get_active_object</strong></span>
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( <span class="methodparam"><span class="type">string</span> <code class="parameter">$progid</code></span>
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[, <span class="methodparam"><span class="type">int</span> <code class="parameter">$code_page</code></span>
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] ) : <span class="type"><a href="class.variant.html" class="type variant">variant</a></span></div>
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<p class="para rdfs-comment">
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<span class="function"><strong>com_get_active_object()</strong></span> is similar to creating a new
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instance of a <a href="class.com.html" class="xref">COM</a> object, except that it will
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only return an object to your script if the object is already running.
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OLE applications use something known as the "<em>Running Object Table</em>" to
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allow well-known applications to be launched only once; this function
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exposes the COM library function GetActiveObject() to get a handle on a
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running instance.
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</p>
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</div>
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<div class="refsect1 parameters" id="refsect1-function.com-get-active-object-parameters">
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<h3 class="title">参数</h3>
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<p class="para">
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<dl>
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<dt>
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<code class="parameter">progid</code></dt>
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<dd>
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<p class="para">
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<code class="parameter">progid</code> must be either the ProgID or CLSID for
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the object that you want to access (for example
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<em>Word.Application</em>).
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</p>
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</dd>
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<dt>
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<code class="parameter">code_page</code></dt>
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<dd>
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<p class="para">
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Acts in precisely the same way that it does for the <a href="class.com.html" class="xref">COM</a> class.
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</p>
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</dd>
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</dl>
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</p>
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</div>
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<div class="refsect1 returnvalues" id="refsect1-function.com-get-active-object-returnvalues">
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<h3 class="title">返回值</h3>
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<p class="para">
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If the requested object is running, it will be returned to your script
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just like any other COM object.
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</p>
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</div>
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<div class="refsect1 errors" id="refsect1-function.com-get-active-object-errors">
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<h3 class="title">错误／异常</h3>
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<p class="para">
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There are a variety of reasons why this function might fail, the most
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common being that the object is not already running. In that situation,
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the exception error code will be <strong><code>MK_E_UNAVAILABLE</code></strong>;
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you can use the <em>getCode</em> method of the exception object
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to check the exception code.
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</p>
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</div>
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<div class="refsect1 notes" id="refsect1-function.com-get-active-object-notes">
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<h3 class="title">注释</h3>
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<div class="warning"><strong class="warning">Warning</strong>
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<p class="para">
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Using <span class="function"><strong>com_get_active_object()</strong></span> in a web server context
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is not always a smart idea. Most COM/OLE applications are not designed
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to handle more than one client concurrently, even (or especially!)
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Microsoft Office. You should read <a href="http://support.microsoft.com/kb/257757" class="link external">» Considerations for Server-Side
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Automation of Office</a> for more information on the general issues
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involved.
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</p>
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</div>
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</div>
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</div></div></div></body></html> |