100165731.htm
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HTM
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<p class=2 style='margin-left:21.45pt;FTEL:18.45pt'><span lang=EN-US>interface
IWelcome : IDispatch</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>
[id(0x6000200000)]</span></p>
<p class=2 style='margin-left:21.45pt;FTEL:18.45pt'><span lang=EN-US>
HRESULT Greeting([in] BSTR name, [out, retval] BSTR* pRetVal);</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>[</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(EF596F3F-B69B-3657-9D48-C906CBF12565),</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.IMath)</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>interface
IMath : IDispatch</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>
[id(0x6000200000)] HRESULT Add([in] long val1, [in] long val2, [out, retval]
long* pRetVal);</span></p>
<p class=2 style='margin-left:21.45pt;FTEL:18.45pt'><span lang=EN-US>
[id(0x6000200001)] HRESULT Sub([in] long val1, [in] long val2, [out, retval]
long* pRetVal);</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>};</span></p>
<p class=MsoNormal><span lang=EN-US>coclass</span><span style='font-family:
宋体'>部分标记</span><span lang=EN-US>COM</span><span style='font-family:宋体'>对象本身。头文件中的</span><span
lang=EN-US>uuid</span><span style='font-family:宋体'>是用于实例化对象的</span><span
lang=EN-US>CLSID</span><span style='font-family:宋体'>。类</span><span lang=EN-US>DotNetComponent</span><span
style='font-family:宋体'>支持接口</span><span lang=EN-US>_DotNetComponent</span><span
style='font-family:宋体'>、</span><span lang=EN-US>_Object</span><span
style='font-family:宋体'>、</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'>。</span><span lang=EN-US>_Object</span><span
style='font-family:宋体'>在文件</span><span lang=EN-US>mscorlib.tlb</span><span
style='font-family:宋体'>中定义，该文件包含在前面的代码段中，提供了基类</span><span lang=EN-US>Object</span><span
style='font-family:宋体'>的方法。组件的默认接口是</span><span lang=EN-US>_DotNetComponent</span><span
style='font-family:宋体'>，它在</span><span lang=EN-US>Coclass</span><span
style='font-family:宋体'>部分的后面被定义为一个分派接口。在接口声明中，它标记为双重，但因为不包含方法，所以是一个分派接口。在这个接口中，可以使用后期绑定访问组件的所有方法。</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>
uuid(5BCD9C26-D68D-38C2-92E3-DA0C1741A8CD),</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(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. 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>coclass
DotnetComponent </span></p>
<p class=2 style='margin-left:21.45pt;FTEL:18.45pt'><span lang=EN-US>
[default interface _DotnetComponent;</span></p>
<p class=2 style='margin-left:21.45pt;FTEL:18.45pt'><span lang=EN-US>
interface _Object;</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-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>[</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(884C59C6-B3C2-3455-BB74-52753C409097),</span></p>
<p class=2 style='margin-left:21.45pt;FTEL:18.45pt'><span lang=EN-US>
hidden,</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. 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>interface
_DotnetComponent : IDispatch</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-top:0cm;margin-right:0cm;FTEL:8.15pt;
margin-left:21.45pt;FTEL:0cm'><span lang=EN-US>};</span></p>
<p class=MsoNormal><span style='font-family:宋体'>生成类型库有许多默认选项。其优点是可以修改一些从</span><span
lang=EN-US>.NET</span><span style='font-family:宋体'>到</span><span lang=EN-US>COM</span><span
style='font-family:宋体'>的默认映射。这可以使用命名空间</span><span lang=EN-US>System.Runtime.InteropServices</span><span
style='font-family:宋体'>中的几个特性来实现。</span></p>
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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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