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28.4.3 创建类型库
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28.4.3 创建类型库
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<div style='float:left;width:49%'>·<a href='100165728.htm'>28.4 在COM客户程序中使用.NET组件</a></div><div style='float:right;width:49%'>·<a href='100165729.htm'>28.4.1 COM Callable Wrapper</a></div><div style='float:left;width:49%'>·<a href='100165730.htm'>28.4.2 创建.NET组件</a></div><div style='float:right;width:49%'>·<a href='100165732.htm'>28.4.4 COM互操作特性</a></div><div style='float:left;width:49%'>·<a href='100165733.htm'>28.4.5 COM注册</a></div><div style='float:right;width:49%'>·<a href='100165734.htm'>28.4.6 创建COM客户程序</a></div></div>
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<div id="text"> <link href="css.css" rel="stylesheet" type="text/css" /><h3 style='margin-top:8.15pt;margin-right:0cm;FTEL:8.15pt;margin-left:
0cm'><span lang=EN-US>28.4.3 </span><span style='font-family:黑体'>创建类型库</span></h3>
<p class=MsoNormal><span style='font-family:宋体'>类型库可以用命令行实用工具</span><span
lang=EN-US>tlbexp</span><span style='font-family:宋体'>创建。命令：</span></p>
<p class=a5 style='margin-top:8.15pt;margin-right:0cm;FTEL:8.15pt;
margin-left:21.45pt;FTEL:18.45pt'><b><span lang=EN-US>tlbexp
DotNetComponent.dll</span></b></p>
<p class=MsoNormal><span style='font-family:宋体'>会创建类型库</span><span lang=EN-US>DotNetComponent.tlb</span><span
style='font-family:宋体'>。使用实用工具</span><span lang=EN-US>OLE/COM Object Viewer</span><span
style='font-family:宋体'>可以查看类型库。要访问这个实用工具，可以在</span><span lang=EN-US>Visual
Studio .NET</span><span style='font-family:宋体'>中选择</span><span lang=EN-US>Tools
| OLE/COM Object Viewer</span><span style='font-family:宋体'>，然后选择</span><span
lang=EN-US>File | View TypeLib</span><span style='font-family:宋体'>，打开类型库。在下面的代码中，可以查看接口定义。惟一的</span><span
lang=EN-US>ID</span><span style='font-family:宋体'>可能不同。</span></p>
<p class=MsoNormal><span style='font-family:宋体'>类型库的名称是根据程序集的名称创建的。类型库的头文件还在定制特性中定义了程序集的全名，所有的接口都在定义之前声明：</span></p>
<p class=2 style='margin-top:8.15pt;margin-right:0cm;FTEL:0cm;
margin-left:21.45pt;FTEL:.0001pt;FTEL:18.45pt'><span
lang=EN-US>//Generated .IDL file (by the OLE/COM object Viewer)</span></p>
<p class=2 style='margin-left:21.45pt;FTEL:18.45pt'><span lang=EN-US>//</span></p>
<p class=2 style='margin-left:21.45pt;FTEL:18.45pt'><span lang=EN-US>//typelib
filename: <could not determine filename></span></p>
<p class=2 style='margin-left:21.45pt;FTEL:18.45pt'><span lang=EN-US> </span></p>
<p class=2 style='margin-left:21.45pt;FTEL:18.45pt'><span lang=EN-US>[</span></p>
<p class=2 style='margin-left:21.45pt;FTEL:18.45pt'><span lang=EN-US>
uuid(0AA0953A-B2A0-32CB-A5AC-5DA0DF698EB8),</span></p>
<p class=2 style='margin-left:21.45pt;FTEL:18.45pt'><span lang=EN-US>
version(1.0),</span></p>
<p class=2 style='margin-left:21.45pt;FTEL:18.45pt'><span lang=EN-US>
custom(90883F05-3D28-11D2-8F17-00A0C9A6186D, DotNetComponent,</span></p>
<p class=2 style='margin-left:21.45pt;FTEL:18.45pt'><span lang=EN-US>
Version=1.0.1321.19165, Culture=neutral, PublicKeyToken=null)</span></p>
<p class=2 style='margin-left:21.45pt;FTEL:18.45pt'><span lang=EN-US>]</span></p>
<p class=2 style='margin-left:21.45pt;FTEL:18.45pt'><span lang=EN-US>library
DotNetComponent</span></p>
<p class=2 style='margin-left:21.45pt;FTEL:18.45pt'><span lang=EN-US>{</span></p>
<p class=2 style='margin-left:21.45pt;FTEL:18.45pt'><span lang=EN-US>
//TLib : Common Language Runtime Library :</span></p>
<p class=2 style='margin-left:21.45pt;FTEL:18.45pt'><span lang=EN-US>
//{BED7F4EA-1A96-11D2-8F08-00A0C9A6186D}</span></p>
<p class=2 style='margin-left:21.45pt;FTEL:18.45pt'><span lang=EN-US>
importlib("mscorlib.tlb");</span></p>
<p class=2 style='margin-left:21.45pt;FTEL:18.45pt'><span lang=EN-US>
//TLib : OLE Automation : {00020430-0000-0000-C000-0000000000046}</span></p>
<p class=2 style='margin-left:21.45pt;FTEL:18.45pt'><span lang=EN-US>
importlib("stdole2.tlb");</span></p>
<p class=2 style='margin-left:21.45pt;FTEL:18.45pt'><span lang=EN-US> </span></p>
<p class=2 style='margin-left:21.45pt;FTEL:18.45pt'><span lang=EN-US>
//Forward declare all types defined in this typelib</span></p>
<p class=2 style='margin-left:21.45pt;FTEL:18.45pt'><span lang=EN-US>
interface IWelcome;</span></p>
<p class=2 style='margin-left:21.45pt;FTEL:18.45pt'><span lang=EN-US>
interface IMath;</span></p>
<p class=2 style='margin-top:0cm;margin-right:0cm;FTEL:8.15pt;
margin-left:21.45pt;FTEL:18.45pt'><span lang=EN-US> interface
_DotNetComponent;</span></p>
<p class=MsoNormal><span style='font-family:宋体'>在下面生成的代码中，可以看到接口</span><span
lang=EN-US>IWelCome</span><span style='font-family:宋体'>和</span><span
lang=EN-US>IMath</span><span style='font-family:宋体'>被定义为</span><span
lang=EN-US>COM</span><span style='font-family:宋体'>双重接口。在</span><span
lang=EN-US>C#</span><span style='font-family:宋体'>代码中声明的所有方法都列在类型库定义中。参数有所改变：</span><span
lang=EN-US>.NET</span><span style='font-family:宋体'>类型映射为</span><span
lang=EN-US>COM</span><span style='font-family:宋体'>类型</span><span lang=EN-US>(</span><span
style='font-family:宋体'>如</span><span lang=EN-US>String</span><span
style='font-family:宋体'>类映射为</span><span lang=EN-US>BSTR</span><span
style='font-family:宋体'>类型</span><span lang=EN-US>)</span><span
style='font-family:宋体'>，签名也改变了，返回一个</span><span lang=EN-US>HRESULT</span><span
style='font-family:宋体'>。由于接口是双重接口，所以还生成了分派</span><span lang=EN-US>ID</span><span
style='font-family:宋体'>。</span></p>
<p class=2 style='margin-top:8.15pt;margin-right:0cm;FTEL:0cm;
margin-left:21.45pt;FTEL:.0001pt;FTEL:18.45pt'><span
lang=EN-US>[</span></p>
<p class=2 style='margin-left:21.45pt;FTEL:18.45pt'><span lang=EN-US>
odl,</span></p>
<p class=2 style='margin-left:21.45pt;FTEL:18.45pt'><span lang=EN-US>
uuid(F39A4143-F88D-321E-9A33-8208E256A2DF),</span></p>
<p class=2 style='margin-left:21.45pt;FTEL:18.45pt'><span lang=EN-US>
version(1.0),</span></p>
<p class=2 style='margin-left:21.45pt;FTEL:18.45pt'><span lang=EN-US>
dual,</span></p>
<p class=2 style='margin-left:21.45pt;FTEL:18.45pt'><span lang=EN-US>
oleautomation,</span></p>
<p class=2 style='margin-left:21.45pt;FTEL:18.45pt'><span lang=EN-US>
custom(0F21F359-Ab84-41EB-9A78-36D110E6D2F9,</span></p>
<p class=2 style='margin-left:21.45pt;FTEL:18.45pt'><span lang=EN-US>
Wrox.ProCSharp.COMInterop.Server.IWelcome)</span></p>
<p class=2 style='margin-left:21.45pt;FTEL:18.45pt'><span lang=EN-US>]</span></p>
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