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USB camera capture code!! (DirectShow) Kim,Sung-Gyoo21-Aug-01 23:54 Kim,Sung-Gyoo 21-Aug-01 23:54  I'm writing an USB camera-capture program using DirectShow. I've succeeded previewing and writing the captured stream to an AVI file. But the written file is very slow because it isn't compressed. I don't know how to add a compression filter into the capture graph. Please show me any code about capture program. Re: USB camera capture code!! (DirectShow) Paul A. Howes19-Sep-01 3:23 Paul A. Howes 19-Sep-01 3:23  Web-cams generally use compression over the USB connection, but the drivers do the decompression for you. When you send video to another person through Netmeeting (or any other video conferencing program) it compresses the video stream in another format. As you would like to do something similar yourself, you will need to obtain a pointer to the IFilterGraph or IGraphBuilder interface exposed by the graph doing the capture, then insert and connect the "Infinite Tee Filter" just before the render filter to get a copy of the video stream. Then, connect the "ASF Writer Filter" to the Tee, which will generate the output file for you. Read through the DirectShow section of the Platform SDK, and look at the sample files. A lot of the code is already there for you to use. -- Paul "I drank... WHAT?" Email Client software source code! seashoreboy21-Aug-01 4:36 seashoreboy 21-Aug-01 4:36  I will appreciate that someone can seng me a Email client software source code that can send Email in HTML format. thanks a lot! my email :stoney@263.net happy to see everyone Retrieving File Association Details Steve Thresher21-Aug-01 1:23 Steve Thresher 21-Aug-01 1:23  Can anybody tell me how to work out which program is used to open a file, ie .doc files are opened by Word. I think there is an article on this site but I have had no luck finding it yet. Re: Retrieving File Association Details Oscar Vazquez29-Aug-01 3:18 Oscar Vazquez 29-Aug-01 3:18  You can look for this info in the registr under HKCR. This is a two step process. First get de default value from the key of the desired file extension(\\HKCR\.xls, in my instalation "Exell.Sheet.8",the name asigned to this file type ) Second. Get the default value of \\HKCR\Exell.Sheet.8\Shell\Open\command. For more detail, look at this link. http://download.microsoft.com/download/platformsdk/sample19/1/W9XNT4/EN-US/FileAsso.exe Estimating remainding time Philippe Mori20-Aug-01 5:49 Philippe Mori 20-Aug-01 5:49  Does someone knows where to find algorithms to estimate remainding time that will adjust the estimation if the speed varies (something like Internet Explorer would do - the estimate time would adjust with the connection speed (for eg. if it slow downs...). The simple way is to divide elapsed time by the current estimation of the progress to get the mean speed... but it does not adjust well to speed change. I think that I should uses more of the recent time information than older one... We want an algorithm that will self-adjust estimated remainding time for general use in our applications. Philippe Mori Re: Estimating remainding time 3-Sep-01 12:09 3-Sep-01 12:09  Simple... Use "moving averages", wich are largely used in stock trading. for eg., use avg(avg(total download) + avg(last 10%)) Re: Estimating remainding time TomKat14-Mar-03 16:17 TomKat 14-Mar-03 16:17  16/03/2003 - i will have posted an article on estimations ! A class that does this ! CPrg prg; prg.SetRange(0,1000); int i=0; while(1) { prg.SetPos(i); i++; printf("%d\r\n",prg.ElapsedSeconds()); printf("%d\r\n",prg.LeftSeconds()); } it`s all you need ! for transfers ... for example ! // be cool ! I am the mighty keeper of the book on knowledge . Contact me to get your copy . drawing a graph in vc++ 20-Aug-01 5:37 20-Aug-01 5:37  how to design a graph by taking time on x-axis and pressure on y-axis by taking these x,y co-ordinates from a file/database in vc++ using mfc datla anjaneya raju HARDWARE INFORMATION mahmoud elsheikh19-Aug-01 0:11 mahmoud elsheikh 19-Aug-01 0:11  HELLO EVERY BODY.DID ANY BODY KNOW HOW TO RETRIEVE HARDWARE INFORMATION LIKE PROCESSOR SERIAL NUMBER,MOTHERBOARD SERIAL NUMBER....ETC OR ANY SITE INCLUDE SUCH SORT OF INFORMATION (IN C/C++/ASSEMBLY/VISUALC API/VISUAL BASIC) THANK YOU ALL MAHMOUD how to register a system keyboardhook in my own winlogon notification package 17-Aug-01 15:29 17-Aug-01 15:29  I want to register a system keyboardhook in my own winlogon notification package.But I try,the hook didn't work. I didn't want to replace gina.dll,just use winlogon notification package.Who know that,please tell me. IHTMLDOMNode insertBefore() Roy Benson17-Aug-01 0:58 Roy Benson 17-Aug-01 0:58  Hello all, Has anybody got a working sample/example of how the insertBefore (IHTMLDOMNode) method works? I am currently working with MSHTML in C++, and have a IHTMLDocument2 object. I am trying to insert a IHTMLMetaElement object into this object so that it will appear towards the top of the HTML page (when it's saved out) My problem is that the call to insertBefore always fails, mainly due to my lack of understanding of the MSDN documentation. I am currently trying to insert the IHTMLMetaElement object above the body of the HTML document (pHTMLPageBody) Heres what I am doing at the moment... VARIANT vTemp; vTemp.vt = VT_DISPATCH; vTemp.pdispVal = pHTMLPageBody; hr = pDOMObject->insertBefore((IHTMLDOMNode*)pMetaTag, vTemp, &pNewNode); I tend to get an error code back in the hr value, and no meta tag in my output html doc... Any help would be appreciated. THanks Re: IHTMLDOMNode insertBefore() Not Active17-Aug-01 3:37 Not Active 17-Aug-01 3:37  What is the HRESULT error? I suspect it is because of the IHTMLMetaElement. Re: IHTMLDOMNode insertBefore() Roy Benson17-Aug-01 6:57 Roy Benson 17-Aug-01 6:57  Thanks for replying Mark, The hr is "-2147024809". Had a quick look in MSDN for the number, and it did seem to hint at an invalid parameter. I have to say I wasn't confident at how I initialised the VARIANT param vTemp.vt = VT_DISPATCH; vTemp.pdispVal = pHTMLPageBody; The question is, what is the correct initialisation for a IHTMLMetaElement? Roy Re: IHTMLDOMNode insertBefore() Not Active18-Aug-01 4:03 Not Active 18-Aug-01 4:03  Here is a hint. In the debugger watch window you can format HRESULTS into a more readable form. hr,hr will give something like E_POINTER instead of -2178934234234. Re: IHTMLDOMNode insertBefore() Roy Benson20-Aug-01 3:20 Roy Benson 20-Aug-01 3:20  Hi Mark, Well, according to MSDN, the HRESULT is "E_INVALIDARG" surprise surprise. The IHTMLMetaElement seems to be OK. When using these calls, I can amend the element and output to a file. hr = pDOMObject->replaceNode((IHTMLDOMNode*)pMetaTag,&pNewNode); or hr = pNewElem->insertAdjacentElement(bstrDes,(IHTMLElement*)pMeta,&pOut); So I think the Meta element is OK, I tried passing a Null pointer instead, (but keeping the Variant + output IHTMLDOMNode) And I got the E_POINTER return instead, I assume this means the other two params are OK or at least the debugger is falling over the first param (Meta Element) for sure. I know the Meta Element is a valid object, and I've tried casting it to a IHTMLDOMNode* in different ways before/as part of the call to insertBefore, but i'm still stumped What am I missing? Re: IHTMLDOMNode insertBefore() Not Active20-Aug-01 6:51 Not Active 20-Aug-01 6:51  Take a look here. It may be helpful. Sorry but right now I don't have the time to be of more help. IHTMLDOMNode insertBefore() - Solved Roy Benson20-Aug-01 22:40 Roy Benson 20-Aug-01 22:40  Hi Mark, THanks for the help, I finally solved the problem! The important bit was ensuring that the pDOMObject points to the HTML tag, and then the vTemp points to the body tag. Both were pointing to the body tag, hence I was trying to insert the meta tag in the body before itself...if you know what I mean... hr = pDOMObject->insertBefore((IHTMLDOMNode*)pElement, vTemp, &pNewNode); Ironically, it was eventually inserted between the HEAD and Body tags, and then I realised it had to be within the the actual head tag, so I ended up using the appendChild method instead.....Doh! Was a usefull exercise to go through anyway, THanks again CSynchronisedData object 16-Aug-01 2:58 16-Aug-01 2:58  I'm looking for some inputs on how to create a simple object (ideally an ATL Com object) where one (or more) application(s) may may store some data (text, numbers, structures, etc..). Another application may read the data, not only on one machine but on several machines - connected via network and/or serial ports or whatever.. The main idea is that we have several machines running the same SW, and configuration changes can be made anywhere, and these must be forwarded to all running instances of the same SW. the main concern is that the "SynchronisedData" object must be very easy to implement... basically only "write some stuff" and "read some stuff" Re: CSynchronisedData object 3-Sep-01 12:46 3-Sep-01 12:46  You must have a Lock/UnLock method pairs, or you can have multiple changes occuring at same time... Derive a class from CMutex and add you read/write methods... Discussion Forum Code 15-Aug-01 5:43 15-Aug-01 5:43  When will this latest version of the codeproject discussion forum be available for download, in the form of the ActiveX dll version. I have noticed a lot of new features, including the keywork filter and would like to have this latest version. Thanks. Jason Re: Faking dirs and files in Explorer gerryg40015-Aug-01 3:44 gerryg400 15-Aug-01 3:44  Hi, I seem to remember a programme (like WinZip) which presented its contents as folders and files in Explorer, without the archive actually being opened. Is there a WIN32 API function for showing dirs and file in the WIN file system that don't _really_ exist as files on the disk ?? Thanks Gerry Re: Faking dirs and files in Explorer Michael Dunn15-Aug-01 6:38 Michael Dunn 15-Aug-01 6:38  That was Zip-It or Zip Magic or something, WinZip doesn't do that. But anyway, what you're thinking of is namespace extensions. I'm working on an article on that topic right now, as a matter of fact. --Mike-- http://home.inreach.com/mdunn/ A recent survey reports that 1/4 of all internet users in England surf for porn. The other 3/4 just didn't want to admit it. Re: Faking dirs and files in Explorer gerryg40016-Aug-01 12:49 gerryg400 16-Aug-01 12:49  Mike, Thanks heaps. Let us know when you're done. I look fwd to it. Gerry Re: Faking dirs and files in Explorer Thomas Freudenberg7-Sep-01 5:43 Thomas Freudenberg 7-Sep-01 5:43  Me, too. We are developing a server/client application with a file repository on the server. I would like to present these files with such a namespace extension on the client-side.

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