C / C++ / MFC

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Re: Help me Dialogic Michael P Butler10-Jun-02 23:14 Michael P Butler 10-Jun-02 23:14  What version of the Dialogic board are you using? Are you using their own API or their TAPI drivers? Michael "Eureka" is Greek for "This bath is too hot" Dr Watson exception Stan the man10-Jun-02 19:44 Stan the man 10-Jun-02 19:44  We have an application using a data acq card under Win NT. I compiled in Win98 (I did not have Nt available right now but it should work). Without calls to the functions provided by the vendor, the application will work except it does not get data that is. When I run it in NT with calls to the card using the func provided, Dr Watson gives me an exception in privileged instruction (0xc0000096), Add 0x10002b9b What I don't understand is why. I thought it might be using an address already used by the system. I tried changing the address of the calls to the card (and change its address) but it doesn't seem to work. Anyone has any ideas, I would highly appreciate some suggestions. Thanks in advance. Re: Dr Watson exception Joaquín M López Muñoz10-Jun-02 21:24 Joaquín M López Muñoz 10-Jun-02 21:24  Are you sure this data card is compatible with NT? Have you installed the appropriate drivers? If so, check for samples provided by the vendor to see if things are done differently in this OS. Joaquín M López Muñoz Telefónica, Investigación y Desarrollo SHELL32.DLL- Entry Point SHGetSpecialFolderPathA not found error Stan the man10-Jun-02 19:33 Stan the man 10-Jun-02 19:33  I compiled my program in Win98 and it works fine. When I run it in NT, it gives me the following error: The procedure entry point ShGetSpecialFolderPathA could not be located in the dynamic link library SHELL32.dll I am not sure why. I thought maybe it is because IE 4+ or some other things which might update this file is not installed. But I have IE 5 and also SP3+. Can someone please shed some light on this? Thanks in advance!!! Re: SHELL32.DLL- Entry Point SHGetSpecialFolderPathA not found error Nish Nishant10-Jun-02 21:30 Nish Nishant 10-Jun-02 21:30  Chk and see if Shell32.dll's version is greater than or equal to 4.71 Nish Author of the romantic comedy Summer Love and Some more Cricket [New Win] Buy it, read it and admire me Re: SHELL32.DLL- Entry Point SHGetSpecialFolderPathA not found error Michael Dunn10-Jun-02 22:03 Michael Dunn 10-Jun-02 22:03  MSDN says: Version 4.71 and later of Shell32.dll So your NT system does not have 4.71 or later of shell32.dll. You get that version by installing the Active Desktop shell. --Mike-- Just released - RightClick-Encrypt - Adds fast & easy file encryption to Explorer Like the Google toolbar? Then check out UltraBar, with more features & customizable search engines! My really out-of-date homepage Sonork-100.19012 Acid_Helm STATIC TEXT VC++ MFC Appl Sameer Maggon10-Jun-02 19:13 Sameer Maggon 10-Jun-02 19:13  Hi, Do we have a method by which we can declare an array of 16 bytes whose offset remains the same whenever the program is compiled.. The program is an MFC (EXE).. Sameer Re: STATIC TEXT VC++ MFC Appl Nish Nishant10-Jun-02 19:14 Nish Nishant 10-Jun-02 19:14  Sameer Maggon wrote: Do we have a method by which we can declare an array of 16 bytes whose offset remains the same whenever the program is compiled.. I seriously doubt whether that's possible! Of course I could be wrong too. By the way why would you want to do that? Perhaps there are other solutions to your problem Nish Author of the romantic comedy Summer Love and Some more Cricket [New Win] Buy it, read it and admire me While terminating application a error is displayed.... newneo10-Jun-02 18:14 newneo 10-Jun-02 18:14  While terminating application for testing which i developed using c++ and ocx component i am finding a error maessage is displayed like.. The full err message is Unhandeled exception in appl.exe(MFC40.dll):0xc0000005:access violation next err message 6c6e5009 call dword ptr[edi+18h] I am new to vc++ and have therotical knowledge of c++.. I hope u understand the problem and get back to me. Thankx in advanced Re: While terminating application a error is displayed.... Rama Krishna Vavilala10-Jun-02 18:16 Rama Krishna Vavilala 10-Jun-02 18:16  Go to project settings an include debug information in your application. Look at some of the articles here on how to do it. Specifically, this by Joseph N NewComer. This will enable you to see the call stack and the problem may become clearer. Re: While terminating application a error is displayed.... Nish Nishant10-Jun-02 19:16 Nish Nishant 10-Jun-02 19:16  What does the call stack say? Where in your program is this error occuring can be figured out from the call stack! Nish Author of the romantic comedy Summer Love and Some more Cricket [New Win] Buy it, read it and admire me Re: While terminating application a error is displayed.... newneo10-Jun-02 20:02 newneo 10-Jun-02 20:02  Thanx for reply mr Rama krishna and Nish further regarding my application problem is that call stack gives this information Call Stack: MFC40! 6c6e5009() MFC40! 6c701124() COleDispatchDriver::~COleDispatchDriver() line 85 + 15 bytes MoPoints::~MoPoints() + 20 bytes $E349() + 19 bytes doexit(int 0, int 0, int 0) line 353 exit(int 0) line 279 + 13 bytes WinMainCRTStartup() line 345 KERNEL32! 77e97d08() Thankx a lot hope u will give me more tips on this.. smarty_sagar@rediffmail.com Thanx once again Neonave Re: While terminating application a error is displayed.... Nish Nishant10-Jun-02 21:42 Nish Nishant 10-Jun-02 21:42  I am not very sure about this but looks like you are not uninitializing some activex control! Nish Author of the romantic comedy Summer Love and Some more Cricket [New Win] Buy it, read it and admire me Re: While terminating application a error is displayed.... newneo11-Jun-02 0:39 newneo 11-Jun-02 0:39  Thanx again for reply I found that we are not using OLE component properly so may be that error is coming.. Can any one help me on ColeDispatchDriver . This is where the error is occurring ,,as some one is developed the code and I am fixing the bug morever I am new to vc++ ,,so having some tough time with this,, Can any one help me out with this… Code some what look like this // COleDispatchDriver _AFXDISP_INLINE COleDispatchDriver::~COleDispatchDriver() { ReleaseDispatch(); } _AFXDISP_INLINE COleDispatchDriver::operator LPDISPATCH() { return m_lpDispatch; } I hope some one will come further and help me out with this.. Thanks in advance,, Neonave Re: While terminating application a error is displayed.... Rama Krishna Vavilala11-Jun-02 1:02 Rama Krishna Vavilala 11-Jun-02 1:02  You have a Global Object of COLeDispatchDriver. You need to Release it in the ExitInstance of your CWinApp derived class. Let's say the name of the variable is g_Dispatch. In the ExitInstance call g_Dispatch.ReleaseDispatch This will fix the problem Help - C++ and Skinnable kulwen10-Jun-02 17:20 kulwen 10-Jun-02 17:20  Can anyone give me any info or good sites to obtain information on creating C++ programs that are skinnable? I am currently a student starting my C++ intro class. And I do not want to create the same plan programs as the rest of the class. Thank you, Kulwen Re: Help - C++ and Skinnable Christian Graus10-Jun-02 17:35 Christian Graus 10-Jun-02 17:35  There are at least two articles here on CP. Christian I am completely intolerant of stupidity. Stupidity is, of course, anything that doesn't conform to my way of thinking. - Jamie Hale - 29/05/2002 "unplug or eject hardware" in application Eric Lee10-Jun-02 16:46 Eric Lee 10-Jun-02 16:46  Hello friends, User can stop the device through the "unplug or eject hardware" application (on the taskbar) in Windows 2000. How can I use this function and stop the device in my application ? Please give me a suggestion, thanks a lot! Good day. Eric Lee WH_CBT and menus Roman Nurik10-Jun-02 15:47 Roman Nurik 10-Jun-02 15:47  im using a WH_CBT hook (passing in the value from GetCurrentThreadId() in SetWindowsHookEx)... and im catching the message HCBT_CREATEWND. now, im trying to catch the creation of ALL menus in my program, but only some are caught: 1) the top menu i click on first to enter the menu loop is NEVER caught in my hook 2) the right-click menu in the caption bar almost always gets caught 3) the other main menus sometimes get caught in the hook can someone explain what i'm doing wrong, or lead me to an example/tutorial? thanks - Roman - Memory Leak due to Memory context moswal10-Jun-02 15:32 moswal 10-Jun-02 15:32  My application has a serious memory leak problem. It is because I am not able to release the memory consumed by the memory context. In general I save an image in 2 memory context variables. One is used to hold latest data and the other one holds previous data(used for undo purpose). I process the image in the memory context and after processing i display it on the device context. I am reusing the same memory context variables for processing the image. But i believe reusing of memory context causes memory leaks therefore i thought I would the image information in an array. I will process that array and save in the memory context and then display it on the device context. But in order to do this I tried the following ways to release the memory consumed by the memory context. 1) memDC.SelectObject(oldbmp); 2) ReleaseDC(memDC); 3) memDC.DeleteDC(); But i am still facing the memory leak problem. Please confirm if reusing memory context is possible and how to release the memory consumed by the memory context. Thanx in advance. Einstein's Assistant Re: Memory Leak due to Memory context Christian Graus10-Jun-02 16:57 Christian Graus 10-Jun-02 16:57  you're creating and deleting the DC over and over ? Why ? I don't see why you could not have a CDC as a member, and I'd suggest your leak is elsewhere, probably to do with the way you handle bitmaps. What OS are you using ? W2000/XP catch GDI leaks for you, and W98 comes with a tool to watch GDI leaks specifically, so you can see if that is what you are leaking. You'll know soon enough, because your whole system will stop drawing stuff ( buttons, windows, etc. ) Christian I am completely intolerant of stupidity. Stupidity is, of course, anything that doesn't conform to my way of thinking. - Jamie Hale - 29/05/2002 Re: Memory Leak due to Memory context moswal10-Jun-02 23:00 moswal 10-Jun-02 23:00  I am working Win2K. Currently I am not deleting the DCs. I am just reusing the memory context to bitblt the processed output to the screen. I realized that my application has a leak by using windows task manager. And after lot of memory is consumed for pull down menus i just see black box. So I guess it is GDI memory leak. I am not creating and deleting DC over and over again. I just create them once when a image is opened. I.e I call the saveimg method which saves the image in the memory context. I want to release memory used by memory context because I fear that reusing memory context is one of the cause of memory leak. To work around this problem I thought I would copy the pixel color values in an array and then release the memory consumed by the memory context. But unfortunately I am not able to release the memory by any the three methods. Thanx in advance. Einstein's Assistant Re: Memory Leak due to Memory context Christian Graus10-Jun-02 23:14 Christian Graus 10-Jun-02 23:14  moswal wrote: I am working Win2K. Therefore you are not leaking GDI resources - Win2000 will clean them for you, as I said. moswal wrote: I realized that my application has a leak by using windows task manager. And after lot of memory is consumed for pull down menus i just see black box. So I guess it is GDI memory leak. Not under W2000. moswal wrote: But unfortunately I am not able to release the memory by any the three methods. I'm pretty sure that's because you're barking up the wrong tree. Christian I am completely intolerant of stupidity. Stupidity is, of course, anything that doesn't conform to my way of thinking. - Jamie Hale - 29/05/2002 Re: Memory Leak due to Memory context moswal10-Jun-02 23:46 moswal 10-Jun-02 23:46  But is it true that reusing Memory context object does not cause any memory leak. Thanx in advance Einstein's Assistant Re: Memory Leak due to Memory context Christian Graus10-Jun-02 23:50 Christian Graus 10-Jun-02 23:50  Yes, that is also true, so long as you manage it's state effectively. Either way, the point is that this is not your problem in this case. Christian I am completely intolerant of stupidity. Stupidity is, of course, anything that doesn't conform to my way of thinking. - Jamie Hale - 29/05/2002

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