📄 csdn_文档中心_视频捕获 之 如何使用系统设备枚举器.htm
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vAlign=top width=568><PRE><FONT face=宋体><CODE><SPAN lang=EN-US style="COLOR: maroon; FONT-SIZE: 10.5pt">//</SPAN></CODE><CODE><SPAN style="COLOR: maroon; FONT-SIZE: 10.5pt">生成系统设备枚举器<SPAN lang=EN-US>.<o:p></o:p></SPAN></SPAN></CODE></FONT></PRE><PRE><CODE><SPAN lang=EN-US style="COLOR: maroon; FONT-SIZE: 10.5pt"><FONT face=宋体>HRESULT hr;<o:p></o:p></FONT></SPAN></CODE></PRE><PRE><CODE><SPAN lang=EN-US style="COLOR: maroon; FONT-SIZE: 10.5pt"><FONT face=宋体>ICreateDevEnum *pSysDevEnum = NULL;<o:p></o:p></FONT></SPAN></CODE></PRE><PRE><CODE><SPAN lang=EN-US style="COLOR: maroon; FONT-SIZE: 10.5pt"><FONT face=宋体>hr = CoCreateInstance(CLSID_SystemDeviceEnum, NULL, CLSCTX_INPROC_SERVER,<o:p></o:p></FONT></SPAN></CODE></PRE><PRE><CODE><SPAN lang=EN-US style="COLOR: maroon; FONT-SIZE: 10.5pt"><FONT face=宋体><SPAN style="mso-spacerun: yes"> </SPAN>IID_ICreateDevEnum, (void **)&pSysDevEnum);<o:p></o:p></FONT></SPAN></CODE></PRE><PRE><CODE><SPAN lang=EN-US style="COLOR: maroon; FONT-SIZE: 10.5pt"><FONT face=宋体>if (FAILED(hr))<o:p></o:p></FONT></SPAN></CODE></PRE><PRE><CODE><SPAN lang=EN-US style="COLOR: maroon; FONT-SIZE: 10.5pt"><FONT face=宋体>{<o:p></o:p></FONT></SPAN></CODE></PRE><PRE><CODE><SPAN lang=EN-US style="COLOR: maroon; FONT-SIZE: 10.5pt"><FONT face=宋体><SPAN style="mso-spacerun: yes"> </SPAN>return hr;<o:p></o:p></FONT></SPAN></CODE></PRE><PRE><CODE><SPAN lang=EN-US style="COLOR: maroon; FONT-SIZE: 10.5pt"><FONT face=宋体>}<o:p></o:p></FONT></SPAN></CODE></PRE><PRE><CODE><SPAN lang=EN-US style="COLOR: maroon; FONT-SIZE: 10.5pt"><o:p><FONT face=宋体> </FONT></o:p></SPAN></CODE></PRE><PRE><FONT face=宋体><CODE><SPAN lang=EN-US style="COLOR: maroon; FONT-SIZE: 10.5pt">// </SPAN></CODE><CODE><SPAN style="COLOR: maroon; FONT-SIZE: 10.5pt">获得视频压缩的类枚举器（<SPAN lang=EN-US>Class enumerator</SPAN>）<SPAN lang=EN-US>.<o:p></o:p></SPAN></SPAN></CODE></FONT></PRE><PRE><CODE><SPAN lang=EN-US style="COLOR: maroon; FONT-SIZE: 10.5pt"><FONT face=宋体>IEnumMoniker *pEnumCat = NULL;<o:p></o:p></FONT></SPAN></CODE></PRE><PRE><CODE><SPAN lang=EN-US style="COLOR: maroon; FONT-SIZE: 10.5pt"><FONT face=宋体>hr = pSysDevEnum->CreateClassEnumerator(CLSID_VideoCompressorCategory, &pEnumCat, 0);<o:p></o:p></FONT></SPAN></CODE></PRE><PRE><CODE><SPAN lang=EN-US style="COLOR: maroon; FONT-SIZE: 10.5pt"><o:p><FONT face=宋体> </FONT></o:p></SPAN></CODE></PRE><PRE><CODE><SPAN lang=EN-US style="COLOR: maroon; FONT-SIZE: 10.5pt"><FONT face=宋体>if (hr == S_OK) <o:p></o:p></FONT></SPAN></CODE></PRE><PRE><CODE><SPAN lang=EN-US style="COLOR: maroon; FONT-SIZE: 10.5pt"><FONT face=宋体>{<o:p></o:p></FONT></SPAN></CODE></PRE><PRE><FONT face=宋体><CODE><SPAN lang=EN-US style="COLOR: maroon; FONT-SIZE: 10.5pt"><SPAN style="mso-spacerun: yes"> </SPAN>// </SPAN></CODE><CODE><SPAN style="COLOR: maroon; FONT-SIZE: 10.5pt">枚举其中的<SPAN lang=EN-US> moniker.<o:p></o:p></SPAN></SPAN></CODE></FONT></PRE><PRE><CODE><SPAN lang=EN-US style="COLOR: maroon; FONT-SIZE: 10.5pt"><FONT face=宋体><SPAN style="mso-spacerun: yes"> </SPAN>IMoniker *pMoniker = NULL;<o:p></o:p></FONT></SPAN></CODE></PRE><PRE><CODE><SPAN lang=EN-US style="COLOR: maroon; FONT-SIZE: 10.5pt"><FONT face=宋体><SPAN style="mso-spacerun: yes"> </SPAN>ULONG cFetched;<o:p></o:p></FONT></SPAN></CODE></PRE><PRE><CODE><SPAN lang=EN-US style="COLOR: maroon; FONT-SIZE: 10.5pt"><FONT face=宋体><SPAN style="mso-spacerun: yes"> </SPAN>while(pEnumCat->Next(1, &pMoniker, &cFetched) == S_OK)<o:p></o:p></FONT></SPAN></CODE></PRE><PRE><CODE><SPAN lang=EN-US style="COLOR: maroon; FONT-SIZE: 10.5pt"><FONT face=宋体><SPAN style="mso-spacerun: yes"> </SPAN>{<o:p></o:p></FONT></SPAN></CODE></PRE><PRE><CODE><SPAN lang=EN-US style="COLOR: maroon; FONT-SIZE: 10.5pt"><FONT face=宋体><SPAN style="mso-spacerun: yes"> </SPAN>IPropertyBag *pPropBag;<o:p></o:p></FONT></SPAN></CODE></PRE><PRE><CODE><SPAN lang=EN-US style="COLOR: maroon; FONT-SIZE: 10.5pt"><FONT face=宋体><SPAN style="mso-spacerun: yes"> </SPAN>hr = pMoniker->BindToStorage(0, 0, IID_IPropertyBag, <o:p></o:p></FONT></SPAN></CODE></PRE><PRE><CODE><SPAN lang=EN-US style="COLOR: maroon; FONT-SIZE: 10.5pt"><FONT face=宋体><SPAN style="mso-spacerun: yes"> </SPAN>(void **)&pPropBag);<o:p></o:p></FONT></SPAN></CODE></PRE><PRE><CODE><SPAN lang=EN-US style="COLOR: maroon; FONT-SIZE: 10.5pt"><FONT face=宋体><SPAN style="mso-spacerun: yes"> </SPAN>if (SUCCEEDED(hr))<o:p></o:p></FONT></SPAN></CODE></PRE><PRE><CODE><SPAN lang=EN-US style="COLOR: maroon; FONT-SIZE: 10.5pt"><FONT face=宋体><SPAN style="mso-spacerun: yes"> </SPAN>{<o:p></o:p></FONT></SPAN></CODE></PRE><PRE><FONT face=宋体><CODE><SPAN lang=EN-US style="COLOR: maroon; FONT-SIZE: 10.5pt"><SPAN style="mso-spacerun: yes"> </SPAN>//</SPAN></CODE><CODE><SPAN style="COLOR: maroon; FONT-SIZE: 10.5pt">如下，得到<SPAN lang=EN-US>Filter</SPAN>的友好名称<SPAN lang=EN-US>:<o:p></o:p></SPAN></SPAN></CODE></FONT></PRE><PRE><CODE><SPAN lang=EN-US style="COLOR: maroon; FONT-SIZE: 10.5pt"><FONT face=宋体><SPAN style="mso-spacerun: yes"> </SPAN>VARIANT varName;<o:p></o:p></FONT></SPAN></CODE></PRE><PRE><CODE><SPAN lang=EN-US style="COLOR: maroon; FONT-SIZE: 10.5pt"><FONT face=宋体><SPAN style="mso-spacerun: yes"> </SPAN>VariantInit(&varName);<o:p></o:p></FONT></SPAN></CODE></PRE><PRE><CODE><SPAN lang=EN-US style="COLOR: maroon; FONT-SIZE: 10.5pt"><FONT face=宋体><SPAN style="mso-spacerun: yes"> </SPAN>hr = pPropBag->Read(L"FriendlyName", &varName, 0);<o:p></o:p></FONT></SPAN></CODE></PRE><PRE><CODE><SPAN lang=EN-US style="COLOR: maroon; FONT-SIZE: 10.5pt"><FONT face=宋体><SPAN style="mso-spacerun: yes"> </SPAN>if (SUCCEEDED(hr))<o:p></o:p></FONT></SPAN></CODE></PRE><PRE><CODE><SPAN lang=EN-US style="COLOR: maroon; FONT-SIZE: 10.5pt"><FONT face=宋体><SPAN style="mso-spacerun: yes"> </SPAN>{<o:p></o:p></FONT></SPAN></CODE></PRE><PRE><FONT face=宋体><CODE><SPAN lang=EN-US style="COLOR: maroon; FONT-SIZE: 10.5pt"><SPAN style="mso-spacerun: yes"> </SPAN>//</SPAN></CODE><CODE><SPAN style="COLOR: maroon; FONT-SIZE: 10.5pt">在你的用户界面上面显示<SPAN lang=EN-US>.<o:p></o:p></SPAN></SPAN></CODE></FONT></PRE><PRE><CODE><SPAN lang=EN-US style="COLOR: maroon; FONT-SIZE: 10.5pt"><FONT face=宋体><SPAN style="mso-spacerun: yes"> </SPAN>}<o:p></o:p></FONT></SPAN></CODE></PRE><PRE><CODE><SPAN lang=EN-US style="COLOR: maroon; FONT-SIZE: 10.5pt"><FONT face=宋体><SPAN style="mso-spacerun: yes"> </SPAN>VariantClear(&varName);<o:p></o:p></FONT></SPAN></CODE></PRE><PRE><CODE><SPAN lang=EN-US style="COLOR: maroon; FONT-SIZE: 10.5pt"><o:p><FONT face=宋体> </FONT></o:p></SPAN></CODE></PRE><PRE><FONT face=宋体><CODE><SPAN lang=EN-US style="COLOR: maroon; FONT-SIZE: 10.5pt"><SPAN style="mso-spacerun: yes"> </SPAN>// </SPAN></CODE><CODE><SPAN style="COLOR: maroon; FONT-SIZE: 10.5pt">如下，生成该<SPAN lang=EN-US>filter</SPAN>的实例<SPAN lang=EN-US>:<o:p></o:p></SPAN></SPAN></CODE></FONT></PRE><PRE><CODE><SPAN lang=EN-US style="COLOR: maroon; FONT-SIZE: 10.5pt"><FONT face=宋体><SPAN style="mso-spacerun: yes"> </SPAN>IBaseFilter *pFilter;<o:p></o:p></FONT></SPAN></CODE></PRE><PRE><CODE><SPAN lang=EN-US style="COLOR: maroon; FONT-SIZE: 10.5pt"><FONT face=宋体><SPAN style="mso-spacerun: yes"> </SPAN>hr = pMoniker->BindToObject(NULL, NULL, IID_IBaseFilter,<o:p></o:p></FONT></SPAN></CODE></PRE><PRE><CODE><SPAN lang=EN-US style="COLOR: maroon; FONT-SIZE: 10.5pt"><FONT face=宋体><SPAN style="mso-spacerun: yes"> </SPAN>(void**)&pFilter);<o:p></o:p></FONT></SPAN></CODE></PRE><PRE><FONT face=宋体><CODE><SPAN lang=EN-US style="COLOR: maroon; FONT-SIZE: 10.5pt"><SPAN style="mso-spacerun: yes"> </SPAN>//</SPAN></CODE><CODE><SPAN style="COLOR: maroon; FONT-SIZE: 10.5pt">将<SPAN lang=EN-US>Filter</SPAN>加入到<SPAN lang=EN-US>Graph. <o:p></o:p></SPAN></SPAN></CODE></FONT></PRE><PRE><FONT face=宋体><CODE><SPAN lang=EN-US style="COLOR: maroon; FONT-SIZE: 10.5pt"><SPAN style="mso-spacerun: yes"> </SPAN>//</SPAN></CODE><CODE><SPAN style="COLOR: maroon; FONT-SIZE: 10.5pt">后面必须记得释放<SPAN lang=EN-US>pFilter.<o:p></o:p></SPAN></SPAN></CODE></FONT></PRE><PRE><CODE><SPAN lang=EN-US style="COLOR: maroon; FONT-SIZE: 10.5pt"><FONT face=宋体><SPAN style="mso-spacerun: yes"> </SPAN>pPropBag->Release();<o:p></o:p></FONT></SPAN></CODE></PRE><PRE><CODE><SPAN lang=EN-US style="COLOR: maroon; FONT-SIZE: 10.5pt"><FONT face=宋体><SPAN style="mso-spacerun: yes"> </SPAN>}<o:p></o:p></FONT></SPAN></CODE></PRE><PRE><CODE><SPAN lang=EN-US style="COLOR: maroon; FONT-SIZE: 10.5pt"><FONT face=宋体><SPAN style="mso-spacerun: yes"> </SPAN>pMoniker->Release();<o:p></o:p></FONT></SPAN></CODE></PRE><PRE><CODE><SPAN lang=EN-US style="COLOR: maroon; FONT-SIZE: 10.5pt"><FONT face=宋体><SPAN style="mso-spacerun: yes"> </SPAN>}<o:p></o:p></FONT></SPAN></CODE></PRE><PRE><CODE><SPAN lang=EN-US style="COLOR: maroon; FONT-SIZE: 10.5pt"><FONT face=宋体><SPAN style="mso-spacerun: yes"> </SPAN>pEnumCat->Release();<o:p></o:p></FONT></SPAN></CODE></PRE><PRE><CODE><SPAN lang=EN-US style="COLOR: maroon; FONT-SIZE: 10.5pt"><FONT face=宋体>}<o:p></o:p></FONT></SPAN></CODE></PRE><PRE><CODE><SPAN lang=EN-US style="COLOR: maroon; FONT-SIZE: 10.5pt"><FONT face=宋体>pSysDevEnum->Release();<o:p></o:p></FONT></SPAN></CODE></PRE>
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style="mso-bidi-font-weight: normal"><SPAN
style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">设备</SPAN><SPAN
lang=EN-US><FONT
face="Times New Roman">Moniker<o:p></o:p></FONT></SPAN></B></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><SPAN
lang=EN-US><FONT
face="Times New Roman">IMoniker::GetDisplayName</FONT></SPAN><SPAN
style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">方法返回</SPAN><SPAN
lang=EN-US><FONT face="Times New Roman">moniker</FONT></SPAN><SPAN
style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">的名字。你可以把这个名字传递给</SPAN><SPAN
lang=EN-US><A
href="mk:@MSITStore:D:\DXSDK\Doc\DirectX9\DirectX9_c.chm::/directx/htm/ifiltergraph2addsourcefilterformoniker.htm"><SPAN
style="COLOR: windowtext; TEXT-DECORATION: none; text-underline: none"><FONT
face="Times New Roman">IFilterGraph2::AddSourceFilterForMoniker</FONT></SPAN></A></SPAN><SPAN
style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">，这样可以生成该设备的捕获</SPAN><SPAN
lang=EN-US><FONT face="Times New Roman">Filter</FONT></SPAN><SPAN
style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">。</SPAN></P>
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style="mso-yfti-irow: 0; mso-yfti-firstrow: yes; mso-yfti-lastrow: yes">
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vAlign=top width=568><PRE><CODE><SPAN lang=EN-US style="COLOR: maroon; FONT-SIZE: 10.5pt"><FONT face=宋体>LPOLESTR strName = NULL;<o:p></o:p></FONT></SPAN></CODE></PRE><PRE><CODE><SPAN lang=EN-US style="COLOR: maroon; FONT-SIZE: 10.5pt"><FONT face=宋体>IBaseFilter pSrc = NULL;<o:p></o:p></FONT></SPAN></CODE></PRE><PRE><CODE><SPAN lang=EN-US style="COLOR: maroon; FONT-SIZE: 10.5pt"><FONT face=宋体>hr = pMoniker->GetDisplayName(NULL, NULL, &strName);<o:p></o:p></FONT></SPAN></CODE></PRE><PRE><CODE><SPAN lang=EN-US style="COLOR: maroon; FONT-SIZE: 10.5pt"><FONT face=宋体>if (SUCCEEDED(hr))<o:p></o:p></FONT></SPAN></CODE></PRE><PRE><CODE><SPAN lang=EN-US style="COLOR: maroon; FONT-SIZE: 10.5pt"><FONT face=宋体>{<o:p></o:p></FONT></SPAN></CODE></PRE><PRE><FONT face=宋体><CODE><SPAN lang=EN-US style="COLOR: maroon; FONT-SIZE: 10.5pt"><SPAN style="mso-spacerun: yes"> </SPAN>// </SPAN></CODE><CODE><SPAN style="COLOR: maroon; FONT-SIZE: 10.5pt">得到<SPAN lang=EN-US>IFilterGraph2</SPAN>的<SPAN lang=EN-US>Filter Graph Manager.<o:p></o:p></SPAN></SPAN></CODE></FONT></PRE><PRE><CODE><SPAN lang=EN-US style="COLOR: maroon; FONT-SIZE: 10.5pt"><FONT face=宋体><SPAN style="mso-spacerun: yes"> </SPAN>IFilterGraph2 *pFG2 = NULL;<o:p></o:p></FONT></SPAN></CODE></PRE><PRE><CODE><SPAN lang=EN-US style="COLOR: maroon; FONT-SIZE: 10.5pt"><FONT face=宋体><SPAN style="mso-spacerun: yes"> </SPAN>hr = pGraph->QueryInterface(IID_IFilterGraph2, (void**)&pFG2);<o:p></o:p></FONT></SPAN></CODE></PRE><PRE><CODE><SPAN lang=EN-US style="COLOR: maroon; FONT-SIZE: 10.5pt"><FONT face=宋体><SPAN style="mso-spacerun: yes"> </SPAN>if (SUCCEEDED(hr))<o:p></o:p></FONT></SPAN></CODE></PRE><PRE><CODE><SPAN lang=EN-US style="COLOR: maroon; FONT-SIZE: 10.5pt"><FONT face=宋体><SPAN style="mso-spacerun: yes"> </SPAN>{<o:p></o:p></FONT></SPAN></CODE></PRE><PRE><CODE><SPAN lang=EN-US style="COLOR: maroon; FONT-SIZE: 10.5pt"><FONT face=宋体><SPAN style="mso-spacerun: yes"> </SPAN>hr = pFG2->AddSourceFilterForMoniker(pMoniker, 0, L"Source", &pSrc);<o:p></o:p></FONT></SPAN></CODE></PRE><PRE><CODE><SPAN lang=EN-US style="COLOR: maroon; FONT-SIZE: 10.5pt"><FONT face=宋体><SPAN style="mso-spacerun: yes"> </SPAN>pFG2->Release();<o:p></o:p></FONT></SPAN></CODE></PRE><PRE><CODE><SPAN lang=EN-US style="COLOR: maroon; FONT-SIZE: 10.5pt"><FONT face=宋体><SPAN style="mso-spacerun: yes"> </SPAN>}<o:p></o:p></FONT></SPAN></CODE></PRE><PRE><CODE><SPAN lang=EN-US style="COLOR: maroon; FONT-SIZE: 10.5pt"><FONT face=宋体><SPAN style="mso-spacerun: yes"> </SPAN>CoTaskMemFree(strName);<o:p></o:p></FONT></SPAN></CODE></PRE><PRE><CODE><SPAN lang=EN-US style="COLOR: maroon; FONT-SIZE: 10.5pt"><FONT face=宋体>}<o:p></o:p></FONT></SPAN></CODE></PRE><PRE><CODE><SPAN lang=EN-US style="COLOR: maroon; FONT-SIZE: 10.5pt"><o:p><FONT face=宋体> </FONT></o:p></SPAN></CODE></PRE><PRE><FONT face=宋体><CODE><SPAN lang=EN-US style="COLOR: maroon; FONT-SIZE: 10.5pt">// </SPAN></CODE><CODE><SPAN style="COLOR: maroon; FONT-SIZE: 10.5pt">如果成功，记得释放<SPAN lang=EN-US>pSrc.<o:p></o:p></SPAN></SPAN></CODE></FONT></PRE>
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lang=EN-US><o:p><FONT color=#000000 face="Times New Roman"
size=3> </FONT></o:p></SPAN></P></TD></TR></TBODY></TABLE></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><SPAN
style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">虽然，用上述方法得到的名字也有较好的可读性，但是我们一般不把它显示给用户，如前面所示，我们一般用从</SPAN><SPAN
lang=EN-US
style="FONT-FAMILY: 新宋体; FONT-SIZE: 10pt; mso-hansi-font-family: 'Times New Roman'; mso-font-kerning: 0pt">IPropertyBag</SPAN><SPAN
style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">得到的名字。</SPAN></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><SPAN
style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">方法</SPAN><SPAN
lang=EN-US><FONT
face="Times New Roman">IMoniker::ParseDisplayName</FONT></SPAN><SPAN
style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">和</SPAN><SPAN
lang=EN-US><FONT
face="Times New Roman">MkParseDisplayName</FONT></SPAN><SPAN
style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">可以用来生成指定</SPAN><SPAN
lang=EN-US><FONT face="Times New Roman">filter</FONT></SPAN><SPAN
style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">类型的设备的</SPAN><SPAN
lang=EN-US><FONT face="Times New Roman">moniker</FONT></SPAN><SPAN
style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">。名字以“</SPAN><FONT
face=宋体><CODE><SPAN lang=EN-US
style="FONT-SIZE: 12pt">@device:*:{category-clsid}</SPAN></CODE><SPAN
style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">”，代表了类型的</SPAN><SPAN
lang=EN-US><FONT face="Times New Roman">GUID</FONT></SPAN><SPAN
style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">，默认的</SPAN><SPAN
lang=EN-US><FONT face="Times New Roman">moniker</FONT></SPAN><SPAN
style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">是设备枚举器中的第一个</SPAN><SPAN
lang=EN-US><FONT face="Times New Roman">moniker</FONT></SPAN><SPAN
style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">。</SPAN></FONT></P>
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vAlign=top width=568><PRE><FONT face=宋体><CODE><SPAN lang=EN-US style="COLOR: maroon; FONT-SIZE: 10.5pt">//</SPAN></CODE><CODE><SPAN style="COLOR: maroon; FONT-SIZE: 10.5pt">视频捕获类型<SPAN lang=EN-US><o:p></o:p></SPAN></SPAN></CODE></FONT></PRE><PRE><CODE><SPAN lang=EN-US style="COLOR: maroon; FONT-SIZE: 10.5pt"><FONT face=宋体>WCHAR szMon[] = L"@device:*:{860BB310-5D01-11d0-BD3B<?xml:namespace prefix = st1 ns = "urn:schemas-microsoft-com:office:smarttags" /><st1:chmetcnv w:st="on" TCSC="0" NumberType="1" Negative="True" HasSpace="False" SourceValue="0" UnitName="a">-00A</st1:chmetcnv><st1:chmetcnv w:st="on" TCSC="0" NumberType="1" Negative="False" HasSpace="False" SourceValue="0" UnitName="C">0C</st1:chmetcnv>911CE86}";<o:p></o:p></FONT></SPAN></CODE></PRE><PRE><CODE><SPAN lang=EN-US style="COLOR: maroon; FONT-SIZE: 10.5pt"><FONT face=宋体>IBindCtx *pBindCtx;<o:p></o:p></FONT></SPAN></CODE></PRE><PRE><CODE><SPAN lang=EN-US style="COLOR: maroon; FONT-SIZE: 10.5pt"><FONT face=宋体>hr = CreateBindCtx(0, &pBindCtx);<o:p></o:p></FONT></SPAN></CODE></PRE><PRE><CODE><SPAN lang=EN-US style="COLOR: maroon; FONT-SIZE: 10.5pt"><o:p><FONT face=宋体> </FONT></o:p></SPAN></CODE></PRE><PRE><CODE><SPAN lang=EN-US style="COLOR: maroon; FONT-SIZE: 10.5pt"><FONT face=宋体>ULONG chEaten = 0;<o:p></o:p></FONT></SPAN></CODE></PRE><PRE><CODE><SPAN lang=EN-US style="COLOR: maroon; FONT-SIZE: 10.5pt"><FONT face=宋体>IMoniker *pMoniker = 0;<o:p></o:p></FONT></SPAN></CODE></PRE><PRE><CODE><SPAN lang=EN-US style="COLOR: maroon; FONT-SIZE: 10.5pt"><FONT face=宋体>hr = MkParseDisplayName(pBindCtx, szMon, &chEaten, &pMoniker);<o:p></o:p></FONT></SPAN></CODE></PRE><PRE><CODE><SPAN lang=EN-US style="COLOR: maroon; FONT-SIZE: 10.5pt"><FONT face=宋体>pBindCtx->Release();<o:p></o:p></FONT></SPAN></CODE></PRE><PRE><CODE><SPAN lang=EN-US style="COLOR: maroon; FONT-SIZE: 10.5pt"><FONT face=宋体>if (SUCCEEDED(hr))<o:p></o:p></FONT></SPAN></CODE></PRE><PRE><CODE><SPAN lang=EN-US style="COLOR: maroon; FONT-SIZE: 10.5pt"><FONT face=宋体>{<o:p></o:p></FONT></SPAN></CODE></PRE><PRE><FONT face=宋体><CODE><SPAN lang=EN-US style="COLOR: maroon; FONT-SIZE: 10.5pt"><SPAN style="mso-spacerun: yes"> </SPAN>// </SPAN></CODE><CODE><SPAN style="COLOR: maroon; FONT-SIZE: 10.5pt">得到名字或绑定至<SPAN lang=EN-US>DirectShow Filter.<o:p></o:p></SPAN></SPAN></CODE></FONT></PRE><PRE><CODE><SPAN lang=EN-US style="COLOR: maroon; FONT-SIZE: 10.5pt"><FONT face=宋体><SPAN style="mso-spacerun: yes"> </SPAN>pMoniker->Release();<o:p></o:p></FONT></SPAN></CODE></PRE><PRE><CODE><SPAN lang=EN-US style="COLOR: maroon; FONT-SIZE: 10.5pt"><FONT face=宋体>}<o:p></o:p></FONT></SPAN></CODE></PRE>
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