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Re: Affine Transformation Andrew Walker17-Jul-04 18:27 Andrew Walker 17-Jul-04 18:27  Try looking into some of the code for robocup - many of the issues involved in correcting camera calibrations sound similar to the problems you are having, and there is a fair bit of code already available to solve those types of problems. Numerical Recipes[^] Is the book you want if need / want to do the maths on your own. If you can keep you head when all about you Are losing theirs and blaming it on you; If you can dream - and not make dreams your master; If you can think - and not make thoughts you aim; Yours is the Earth and everything that's in it. Rudyard Kipling AC-3 Alexander M.,17-Jul-04 10:03 Alexander M., 17-Jul-04 10:03  Hello guys, I'm looking for information about the AC-3 algorithmus and audio compression in general. Does anyone know any source of information? Regards, Alex Don't try it, just do it! Re: AC-3 bikram singh17-Jul-04 10:06 bikram singh 17-Jul-04 10:06  Alexander M. wrote: Don't try it, just do it! Google does. http://www.atsc.org/ Bikram Singh Threading and non User-Interface Classes 0v3rloader17-Jul-04 6:35 0v3rloader 17-Jul-04 6:35  Hello, A quick question: Is it alright to use a CWinThread derived class to create a non User-Interface thread? If it is, would it be okay to initialise AND execute whatever objects (classes) I need inside InitInstance? Thanks, David Re: Threading and non User-Interface Classes Antti Keskinen17-Jul-04 7:04 Antti Keskinen 17-Jul-04 7:04  Straight answer: Yes, it is alright. Creating and executing objects in the CWinThread::InitInstance is ok as well. Detailed: To create a non-GUI (worker) thread, just create a function that will run on the thread (just like WinMain runs on the primary thread). Then call AfxBeginThread a pass it a pointer to the function. When you wish to end the thread execution, just return from the function. You should use CWinThread objects only when you have a GUI thread. Although it is safe to use a CWinThread object with a worker thread, it's a waste of resources. Only use a CWinThread object if your new thread requires a message pump. If it doesn't need it, just create a function that executes on the new thread. For more information, see AfxBeginThread in MSDN. -Antti Keskinen ---------------------------------------------- The definition of impossible is strictly dependant on what we think is possible. Re: Threading and non User-Interface Classes 0v3rloader17-Jul-04 7:30 0v3rloader 17-Jul-04 7:30  Straight answer: Yes, it is alright. Creating and executing objects in the CWinThread::InitInstance is ok as well. But I heard something before.... Although it is safe to use a CWinThread object with a worker thread, it's a waste of resources. Ahh, I see... Only use a CWinThread object if your new thread requires a message pump. Flawless explanation as usual, Antti. I thought there would be some sort of a considerable difference between using or not CWinThread, but I just didn't know what/how. As usual, you've enlightened and pointed me in the rihgt direction. Thanks a lot Antti, David dNimrod#X ________________________ Re: Threading and non User-Interface Classes PJ Arends17-Jul-04 7:39 PJ Arends 17-Jul-04 7:39  This is a question, not a critism of your answer AfxBeginThread returns a CWinThread pointer. So what is the difference if one uses a CWinThread derived class and simply returns FALSE from the OnInitInstance() function, or one calls AfxBeginThread() with a pointer to a function? Does not AfxBeginThread() end up creating a CWinThread object anyway, so how is one a bigger waste of resources than the other? I have so far used AfxBeginThread() for small uncomplicated threads, and CWinThread derived classes for more complicated threads where I can group helper functions all within a class structure. "You're obviously a superstar." - Christian Graus about me - 12 Feb '03 "Obviously ???  You're definitely a superstar!!!" mYkel - 21 Jun '04 Within you lies the power for good - Use it! Re: Threading and non User-Interface Classes Antti Keskinen18-Jul-04 3:29 Antti Keskinen 18-Jul-04 3:29  There are other resources than those used by the code. Deriving, designing and implementing the CWinThread-derived class that is to operate as the GUI thread also takes time, which is a crucial resource in a software project. As such, doing this process for a thread that wouldn't necessarily require it is a waste of time/resources, even though the impact shouldn't be considerable. Writing a single function is easier, I think. However, this is more of a point-of-view issue than an actual problem, so let's just agree that both solutions are just as good to use -Antti Keskinen ---------------------------------------------- The definition of impossible is strictly dependant on what we think is possible. Static lib Atlence17-Jul-04 5:46 Atlence 17-Jul-04 5:46  Hi! Is there a way to compile a library into a "static version" so that when you link to an application, it doesn't need an extra DLL? For example, I would like to compile Ingo A. Kubbilun's code (http://www.codeproject.com/docking/IngoExpBar.asp) so that my application doesn't need the DLL to run properly. Thks in advance! Appstmd http://www.atlence.com Re: Static lib Antti Keskinen17-Jul-04 7:09 Antti Keskinen 17-Jul-04 7:09  Yes. In Visual Studio .Net (2003), create a new Win32 project using the wizards. For Application Type, select "Static Library". Add MFC support if you need to. And off you go. Not sure if this is possible in VC6. But in VC .Net it is. -Antti Keskinen ---------------------------------------------- The definition of impossible is strictly dependant on what we think is possible. Control similar to Windows 2000 peroformance tab Azghar Hussain17-Jul-04 5:00 Azghar Hussain 17-Jul-04 5:00  Hi, Every body. I would like to draw a control which you can find in windows 2000 Perofrmace tab. problem is that I have used a way like drawing into the bitmap and Bitblitting it. But I don't want to use bitmap. Becuase It take so much of memory. I tried to directly draw on to dialog box without using bitmap. But I have flickering problem. Canany one help me out!!! bye Salman Live and Let live Re: Control similar to Windows 2000 peroformance tab Johan Rosengren17-Jul-04 5:22 Johan Rosengren 17-Jul-04 5:22  You'll find lots of information here: http://www.codeproject.com/miscctrl/[^] about using ActiveX in dll yingkou17-Jul-04 3:06 yingkou 17-Jul-04 3:06  there is a FlexGrid in my dialog of my dll,I have exported a function for applicaiton, in the function I want to show dialog,buf failure. and I removed FlexGrid,it works well,why? Re: about using ActiveX in dll bikram singh17-Jul-04 9:01 bikram singh 17-Jul-04 9:01  Im not aware what FlexGrid is, but there have been similar problems with MS Richedit control causing the dialog creation to fail. In this case, you were supposed to call AfxEnableControlContainer(), then all was well. Maybe you should try calling AfxEnableControlContainer() or some other function, depending on what FlexGrid uses? Maybe InitCommonControlsEx() ? Bikram Singh Re: about using ActiveX in dll yingkou17-Jul-04 14:15 yingkou 17-Jul-04 14:15  it still does not work,what should I do Re: about using ActiveX in dll bikram singh17-Jul-04 22:35 bikram singh 17-Jul-04 22:35  Search Google for a solution or post your project/core code where this problem occurs. If you do, be sure to test that the error still occurs before posting it ! Bikram Singh Re: about using ActiveX in dll yingkou18-Jul-04 3:06 yingkou 18-Jul-04 3:06  I alse do it as follow,but it does not work void __declspec(dllexport) __stdcall TestDialogClass(HWND hWnd,CString& name) { AFX_MANAGE_STATE(AfxGetStaticModuleState()); AfxSetResourceHandle(theApp.m_hInstance); AfxEnableControlContainer(); OleInitialize(0); CTestDlg dlg; dlg.m_strTest=name; dlg.DoModal(); AfxSetResourceHandle(AfxGetInstanceHandle()); } Re: about using ActiveX in dll yingkou18-Jul-04 3:13 yingkou 18-Jul-04 3:13  I have resolved it,codes as above.but I tried it in the morning ,it doesn't work well,now it starts to work, I really don't the reason Re: about using ActiveX in dll bikram singh18-Jul-04 3:37 bikram singh 18-Jul-04 3:37  The code works fine for me... the problem is probably elsewhere in your dll/exe code... Bikram Singh Re: about using ActiveX in dll yingkou18-Jul-04 14:12 yingkou 18-Jul-04 14:12  thanks a lot,those codes work well now,but I don't know the reason that it doesn't work at the begin. How to create a window like the Longhorn desktop sidebar? Anonymous17-Jul-04 2:48 Anonymous 17-Jul-04 2:48  I want my VC program window run as the sidebar,what should I do ? Desktop Bands bikram singh17-Jul-04 9:06 bikram singh 17-Jul-04 9:06  Use a Windows feature called "Desktop Bands". See this http://www.codeproject.com/atl/desktop_perf_mon.asp[^] for an implementation of the desktop band. Bikram Singh How to parse an HTML-like file?? Paolo Ponzano17-Jul-04 2:37 Paolo Ponzano 17-Jul-04 2:37  hello, I need to parse a text file and take some tag as <cover href="url"> or , I need it to be written in C, do you think I better use an XML parser ( if yes, which one should I use?, I premitt that I've not got much experience with XML) or should I better so it sequentially by doing <br /> if( strcmp(line,"<cover..............)???<br /> thanks in advance Paolo Re: How to parse an HTML-like file?? Johan Rosengren17-Jul-04 2:49 Johan Rosengren 17-Jul-04 2:49  Easiest will be to process the input char-by-char. Use a state machine, switching states when you reach a '<' or a '>', adding the finished tags or between-tag-content to arrays as appropriate. As a matter of a fact, you should have state changes for spaces and '='s inside the tags as well. Re: How to parse an HTML-like file?? Ravi Bhavnani17-Jul-04 5:19 Ravi Bhavnani 17-Jul-04 5:19  You can use the static string parsing methods in this[^] article to do exactly that. /ravi My new year's resolution: 2048 x 1536 Home | Articles | Freeware | Music ravib@ravib.com

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