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Re: monitoring file system xxhimanshu14-Jan-03 23:49 xxhimanshu 14-Jan-03 23:49  see links.. http://www.codeproject.com/file/ i hope you see what you want there is lots of stuff like the one you are looking for. I think there is an article about how to write log files? hope it does the work.. cheers.. Himanshu Re: monitoring file system Dominik Reichl15-Jan-03 0:42 Dominik Reichl 15-Jan-03 0:42  Perhaps you should have a look at FileMon by http://www.sysinternals.com[^] Source code is available. -Dominik Re: monitoring file system ValentinR15-Jan-03 0:51 ValentinR 15-Jan-03 0:51  thanks Dominik i found this application and I look at it before posting the request the problem with that ona is that i receive a lot of events on file system wich is not needed where can i find some explanation about 'request' column from the GUI ListView? i only need some events of create file, delete file, modify file not such like: FSCTL_IS_VOLUME_MOUNTED thanks in advance for your help Re: monitoring file system AlexO15-Jan-03 2:56 AlexO 15-Jan-03 2:56  MSDN key words : "Change notification", FindFirstChangeNotification, FindNextChangeNotification MSDN article : "Monitoring Changes in a Directory or Directory Tree" Timeouts - Serial communication Daniel Strigl14-Jan-03 22:10 Daniel Strigl 14-Jan-03 22:10  Can anyone explain me somethings about the COMMTIMEOUTS struct of the SetCommTimeouts API function? When I set the ReadIntervalTimeout member to MAXDWORD and the ReadTotalTimeoutMultiplier and ReadTotalTimeoutConstant to 0 the ReadFile operation doesn't wait. Is that right? And what's with the Write... members? When I write 0 to this members, the timeouts will be ignored and the WriteFile function doesn't wait. Is that also right? Daniel --------------------------- Never change a running system! Re: Timeouts - Serial communication Fredrik Skog15-Jan-03 1:23 Fredrik Skog 15-Jan-03 1:23  Yes, that's right. Quoted from MSDN: "A value of MAXDWORD, combined with zero values for both the ReadTotalTimeoutConstant and ReadTotalTimeoutMultiplier members, specifies that the read operation is to return immediately with the characters that have already been received, even if no characters have been received." "A value of zero for both the WriteTotalTimeoutMultiplier and WriteTotalTimeoutConstant members indicates that total time-outs are not used for write operations." Maybe you should read a little bit, eh? Cheers, Fredrik "Felix qui potuit rerum cognoscere causas." Re: Timeouts - Serial communication KarstenK16-Jan-03 0:58 KarstenK 16-Jan-03 0:58  I am doing sometimes a little bit of serial communications. You have to read a BIG bit and test, test, test ... til u drop Try this @ home. (B&B) Graphs and Charts Matthew R. Miller14-Jan-03 20:48 Matthew R. Miller 14-Jan-03 20:48  I have been looking for bar, line, and pie chart/graph in c++ that I can add to my project. I do not mind paying a reasonable fee, but everything I have seen is for .Net. I need c++ that can be used in my projects. Any leads? "Best file compression around: DEL *.* = 100% compression." <><><><><><><><><><><><><> Matthew R. Miller mattrmiller@computersmarts.net www.computersmarts.net Re: Graphs and Charts Neville Franks15-Jan-03 0:57 Neville Franks 15-Jan-03 0:57  There are several articles here on CP including: http://www.codeproject.com/miscctrl/xgraph.asp[^] http://www.codeproject.com/useritems/3D-Pie_progress_control.asp[^] Look in the Misc Controls section: http://www.codeproject.com/miscctrl/[^] If you can't find what you need here then you might also want to look in www.codeguru.com[^] Failing that do a Google search. There are heaps of commercial graph controls around. Neville Franks, Author of ED for Windows. www.getsoft.com Make money with our new Affilate program Re: Graphs and Charts Matthew R. Miller15-Jan-03 4:48 Matthew R. Miller 15-Jan-03 4:48  Thank you for your efforts, unfortunately I have seen all of those with no luck. I am now searching the internet for commercial graphs. Thank you. "Best file compression around: DEL *.* = 100% compression." <><><><><><><><><><><><><> Matthew R. Miller mattrmiller@computersmarts.net www.computersmarts.net Re: Graphs and Charts Nitron15-Jan-03 14:38 Nitron 15-Jan-03 14:38  Try MeasurementStudio[^] or LabView[^] @ National Instruments - Nitron "Those that say a task is impossible shouldn't interrupt the ones who are doing it." - Chinese Proverb DLL problem Neville Franks14-Jan-03 20:17 Neville Franks 14-Jan-03 20:17  I have the following sample code in a DLL: #define DllExport __declspec( dllexport ) #include <vector> class DllExport Archive { protected: std::vector<void*> m_vPointerStored; }; and get the following warning: d:\libs\saiggeneric\test.h(11) : warning C4251: 'm_vPointerStored' : class 'std::vector<void *,class std::allocator<void *> >' needs to have dll-interface to be used by clients of class 'Archive' It only seems to be a problem with STL members. My understanding is that using __declspec( dllexport ) for a class makes the class and everything in it exportable. I'm trying to build a straight C++ DLL, not an MFC Extension DLL. I don't know if this has anything to do with the problem. Help!!!! Neville Franks, Author of ED for Windows. www.getsoft.com Make money with our new Affilate program Re: DLL problem geo_m14-Jan-03 22:25 geo_m 14-Jan-03 22:25  Look at http://support.microsoft.com/default.aspx?scid=KB;en-us;q168958[^] HOWTO: Exporting STL Components Inside & Outside of a Class there is some description which might be usefull (but I have no time to read it, to check if it really solves your problem) Re: DLL problem Neville Franks15-Jan-03 0:51 Neville Franks 15-Jan-03 0:51  Thanks, that's exactly what I needed to know. I had searched around the MS Web site, but didn't find this. Neville Franks, Author of ED for Windows. www.getsoft.com Make money with our new Affilate program datatype conversion r i s h a b h s14-Jan-03 17:57 r i s h a b h s 14-Jan-03 17:57  dear all, how can i display value of variables of sdk datatypes like DWORD, LPTSTR... in a message box thanx Re: datatype conversion xxhimanshu14-Jan-03 19:40 xxhimanshu 14-Jan-03 19:40  convert into string first then you can display anything!!!!! as far as i know.. cheers.. Himanshu Access the camera throught driver ? TPN14-Jan-03 17:24 TPN 14-Jan-03 17:24  I want to manipulate the camera (connected to my computer) such as capturing video stream for cam chat, or video conferencing for further... So that I must know how to use, to control,... the camera throught the camera's driver. Please show me the way to start. Thanks in advance ! aTpnT Re: Access the camera throught driver ? benjymous14-Jan-03 22:57 benjymous 14-Jan-03 22:57  There are examples for this in the DirectX SDK (amongst the DirectShow examples) -- Help me! I'm turning into a grapefruit! Re: Access the camera throught driver ? TPN15-Jan-03 0:52 TPN 15-Jan-03 0:52  I think your reply is so useful to me. Thanks so much, 'benjymous'! aTpnT _MAXPATH Paul Silvernail14-Jan-03 17:00 Paul Silvernail 14-Jan-03 17:00  Hi All, I would like to initialize a char array to hold a path retrieved from a registry key. If I used _MAXPATH constant from stdlib.h like this .... TCHAR MyPath[_MAXPATH], would this ensure that the array will be large enough? Even on 98, XP, NT? Thanks Paul Re: _MAXPATH Michael Dunn14-Jan-03 19:49 Michael Dunn 14-Jan-03 19:49  Never trust your inputs, especially when the source is the registry. Any user could go change your data to something longer than MAX_PATH, which would overrun your buffer, and we all know that only leads to Bad Things. Call RegQueryValueEx() with NULL and 0 as the buffer and size respectively, and you'll get back the exact size of the value in bytes. Alloc a buffer of that size, and you'll always have a big-enough buffer. Check the type as well, make sure it's REG_SZ like you expect. --Mike-- I'm bored... Episode I bored. 1ClickPicGrabber - Grab & organize pictures from your favorite web pages, with 1 click! My really out-of-date homepage Sonork-100.19012 Acid_Helm Re: _MAXPATH Paul Silvernail15-Jan-03 1:42 Paul Silvernail 15-Jan-03 1:42  Thanks Mike, I knew there had to be a way.;) Paul Re: _MAXPATH geo_m14-Jan-03 22:35 geo_m 14-Jan-03 22:35  I would not stick to it. As someone says, never trust your inputs - that's the first reason, second reason is, that this will hardcode the _MAX_PATH to your buffers forever. And now it might be that these 260 chars is enough, but will it be enough next year? recommended reading andyblack14-Jan-03 13:14 andyblack 14-Jan-03 13:14  Hi, I am currently undertaking a project a requires the development of a Windows based application. I have some experiance in C++ coding but up to now all the programs I have coded have been command prompt run applications. Just wondering if anyone knew of any good books that would get me started in learning how to program Windows applications. I have looked but there seems a vast amount out there. I am thinking I would rather use the MFC libarys rather than making direct calls to the Windows API itself. Good idea?? Any recommendations would be greatly appreciated Thanks in advance Re: recommended reading carrie14-Jan-03 23:25 carrie 14-Jan-03 23:25  Without MFC http://www.amazon.co.uk/exec/obidos/ASIN/157231995X/ref=sr_aps_books_1_1/202-2181440-5510268 With MFC http://www.amazon.co.uk/exec/obidos/ASIN/1572316950/ref=pd_sim_b_dp/202-2181440-5510268 Two of the best programming books for Windows as far as I know. They also double as great weightlifting training because of the size of them

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