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分享DIRECTSHOW中，为什么查不到CLSID_SampleGrabber组件中的IID_IBaseFilter接口啊
代码： hr = ::CoCreateInstance(CLSID_SampleGrabber, NULL, CLSCTX_INPROC_SERVER,IID_IBaseFilter, (LPVOID *)&pGrabberBaseFilter);
提示错误：FrameGrabberDemoDlg.obj : error LNK2001: unresolved external symbol _IID_ISampleGrabber
提示错误：FrameGrabberDemoDlg.obj : error LNK2001: unresolved external symbol _IID_ISampleGrabber
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ycw 2002-01-22
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改变一下头文件的搜索先后顺序，在option-Directories-Includes,把Dshow的头文件路径放在最前面试一下！！
surwaz 2001-12-09
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我也碰到这种问题！
杂家老周 2001-11-28
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老大们帮帮忙吧
杂家老周 2001-11-28
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这肯定加了，这要不加编译不得出几百个错误啊
lib也加了
lib也加了
Phourm 2001-11-28
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连接时加入lib
具体哪个你自己找找!
具体哪个你自己找找!
sam1111 2001-11-28
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如果我没说错的话，那两个ID定义应该在qedit.h文件中。因此，请包含这个文件，并连接Qedit.dll库。
sam1111 2001-11-28
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你包含这两个文件了吗？
#include <dshow.h>
#include <qedit.h>
#include <dshow.h>
#include <qedit.h>
sam1111 2001-11-28
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ok,
我手边没有DirectX8.0SDK，不过你如果包含了正确的头文件和库文件的话，应该可以找到。
我手边没有DirectX8.0SDK，不过你如果包含了正确的头文件和库文件的话，应该可以找到。
杂家老周 2001-11-28
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哪位喊我同学的老师来解决一下？
杂家老周 2001-11-28
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Microsoft DirectX 8.0
Sample Grabber Filter
The Sample Grabber filter provides a way to retrieve samples as they pass through the filter graph. It is a transform filter with one input pin and one output pin. It passes all samples downstream unchanged, so you can insert it into a filter graph without altering the data stream. Your application can then retrieve individual samples from the filter by calling methods on the ISampleGrabber interface.
If you want to retrieve samples without rendering the data, connect the Sample Grabber filter to the Null Renderer filter.
For more information on using this filter, see Grabbing Media Samples.
Filter interfaces IBaseFilter, ISampleGrabber
Input pin media types Any media type.
Input pin interfaces IMemInputPin, IPin, IQualityControl
Output pin media types Any media type. Matches input media type.
Output pin interfaces IPin, IQualityControl
Filter CLSID CLSID_SampleGrabber
Property Page CLSID No property page.
Executable Qedit.dll
Merit MERIT_DO_NOT_USE
Category CLSID_LegacyAmFilterCategory
Sample Grabber Filter
The Sample Grabber filter provides a way to retrieve samples as they pass through the filter graph. It is a transform filter with one input pin and one output pin. It passes all samples downstream unchanged, so you can insert it into a filter graph without altering the data stream. Your application can then retrieve individual samples from the filter by calling methods on the ISampleGrabber interface.
If you want to retrieve samples without rendering the data, connect the Sample Grabber filter to the Null Renderer filter.
For more information on using this filter, see Grabbing Media Samples.
Filter interfaces IBaseFilter, ISampleGrabber
Input pin media types Any media type.
Input pin interfaces IMemInputPin, IPin, IQualityControl
Output pin media types Any media type. Matches input media type.
Output pin interfaces IPin, IQualityControl
Filter CLSID CLSID_SampleGrabber
Property Page CLSID No property page.
Executable Qedit.dll
Merit MERIT_DO_NOT_USE
Category CLSID_LegacyAmFilterCategory
杂家老周 2001-11-28
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当然指它的ID了，
好多例子都有这个，你帮我把这个解决了吧
好多例子都有这个，你帮我把这个解决了吧
sam1111 2001-11-28
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同学，我看你对COM的概念有些问题。CLSID_SampleGrabber并非组件，IID_IBaseFilter也不是接口。
CoCreateInstance的第一和第四个参数分别是COM对象的CLSID和接口的IID，而DShow中有SampleGrabber对象吗？我好像不记得有呀，当然找不到它的CLSID了。
CoCreateInstance的第一和第四个参数分别是COM对象的CLSID和接口的IID，而DShow中有SampleGrabber对象吗？我好像不记得有呀，当然找不到它的CLSID了。
杂家老周 2001-11-28
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哪位老大帮帮忙吧
