C / C++ / MFC

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Re: CFile Locking Problem Brad Bruce24-Jun-02 8:38 Brad Bruce 24-Jun-02 8:38  If it fails for one of the listed reasons, I Sleep for a second and then try again. It usually works then (I haven't seen it fail yet). I'd rather fix the real problem though, if possible. Re: CFile Locking Problem Joaquín M López Muñoz24-Jun-02 7:10 Joaquín M López Muñoz 24-Jun-02 7:10  Are you sure the file is always being closed? If you're running the app without the support of a debugger, this may go unnoticed to you. To make sure, you can write some kind of log file with the openings ans closings to determine if this is what's causing your problem. Joaquín M López Muñoz Telefónica, Investigación y Desarrollo Re: CFile Locking Problem Brad Bruce24-Jun-02 8:41 Brad Bruce 24-Jun-02 8:41  The close function is being called. The OS just doesn't get everything straight before the next call. I've duplicated it on a few system with a regular program. Open for Write Close Flush Open for Read (fails here) Close I've tried it with and without the Flush with similar results (happens less frequently with Flush) Thanks Re: CFile Locking Problem Andres Manggini24-Jun-02 9:06 Andres Manggini 24-Jun-02 9:06  Shouldn't be Flush called before Close ?. Andres Manggini. Buenos Aires - Argentina. Re: CFile Locking Problem Brad Bruce24-Jun-02 9:56 Brad Bruce 24-Jun-02 9:56  Close supposedly does its own flush. I've had the call before and after the Close. It has worked better after the close. Reducing the file size of images...? Tommy Svensson24-Jun-02 6:04 Tommy Svensson 24-Jun-02 6:04  Hi all, I wish to put some images (bmp, jpg, gif) in my application. Is there a way of reducing the sometimes large image file sizes...? For instance, I have an app that's about 30 kb big without images, but adding 2-3 of them radically changes the exe size... suddenly around 400-500 kb (of course this depends on the image size). Any ideas? /T Re: Reducing the file size of images...? Jeremy Falcon24-Jun-02 6:28 Jeremy Falcon 24-Jun-02 6:28  Bitmaps compress rather nicely. Jeremy L. Falcon<nobr> Homepage : Sonork = 100.16311 "But everybody darlin' sometimes bites the hand that feeds." "Remember in this game we call life that no one said it's fair." "Just because you're winnin' don't mean you're the lucky ones." Song: Breakdown - Album: Use Your Illusion II - Artist: Guns N' Roses macro returning actual class/function name. ove24-Jun-02 5:11 ove 24-Jun-02 5:11  i try to write a macro, which expands the source. therefore it has to jump to the actual class definition line: ExecuteCommand "WBGoToClassDefinition" then it has to go up and write a text - thats no problem. in the text it should insert the name of the class. in the wizardbar, the class name is mentioned, so vc++ will know it even to "write-the-source-"-time. do you know how i can fix my problem? suggestions? i dont want to write a parser on my own. (the same should work with the function name) thx ove IE:Replace default DNS Error Page.. 24-Jun-02 5:06 24-Jun-02 5:06  Hi, when you enter a wrong domain-name or a page cant be found, the ie redirects you to the msn-search page by default. Now I saw some tool (commonname I think) which changes this default behavior. Anyone knows, how to change the default url the ie jumps to when a page cannot be accessed/found ? (basically to my favourite search engine or my own homepage...) Thanks, Corin Re: IE:Replace default DNS Error Page.. Brad Bruce24-Jun-02 6:08 Brad Bruce 24-Jun-02 6:08  Click on the Search button on the toolbar. When the search window comes up click on Customize. Have fun.... pc to phone 24-Jun-02 5:04 24-Jun-02 5:04  what are the basic steps to make a call from PC to phone anywhare in the world using TAPI 3.0. There are certain methods which are provided by TAPI but not supported when coded.How to cope with it. Making call from PC to phone 24-Jun-02 5:00 24-Jun-02 5:00  i want to establish my connection with any phone number through internet using TAPI from PC and to send my voice data to that PC also inform me if any one have information about this topic later i also want to recieve data from phone thank you Re: Making call from PC to phone Michael P Butler24-Jun-02 5:13 Michael P Butler 24-Jun-02 5:13  It all depends on the hardware at the receiving end, PC to IP phone is fairly straight forward but PC to PST requires hardware to translate. What kind of hardware do you have involved? Michael Logic, my dear Zoe, merely enables one to be wrong with authority. - The Doctor Call establishment from PC to phone using TAPI3.0 24-Jun-02 4:37 24-Jun-02 4:37  how can dial number sitting at PC using IP to connect with another phone Re: Call establishment from PC to phone using TAPI3.0 Michael P Butler24-Jun-02 4:49 Michael P Butler 24-Jun-02 4:49  What kind of hardware is at both ends? What is the exact problem you are having? TAPI 3 is fairly straight forward for making calls (the platform SDK has lots of samples) Michael Logic, my dear Zoe, merely enables one to be wrong with authority. - The Doctor Bring An Application To The Foreground Through Another Application Dean Michaud24-Jun-02 4:30 Dean Michaud 24-Jun-02 4:30  I have a need of a way to bring one application to the foreground from another application. Application 'A' is either laucnhed by itself or it can be launched from application 'B' upon a button press. There's no guarantee which app was started first, or if the application to be brought to the foreground (app 'A') is even running at that point in time. If 'A' is not running I am launching it upon a button press in app 'B' - but if 'A' is already running I want to bring it to the foreground to alert the user it's already running (and not spawn a second instance of app 'A'). I'm currently using a mutex to check to see if app 'A' is already running, but I am not sure how to bring it to the foreground when it is. Any thoughts or ideas on how to proceed? : Dean 'Karnatos' Michaud Re: Bring An Application To The Foreground Through Another Application Michael Liu24-Jun-02 4:44 Michael Liu 24-Jun-02 4:44  Try to use SetForegroundWindow() then use ShowWindow() with SW_SHOWNORMAL flag. Michael Liu Re: Bring An Application To The Foreground Through Another Application Dean Michaud24-Jun-02 4:58 Dean Michaud 24-Jun-02 4:58  To set the foreground, I need to either get: A) hWnd for app 'B' while in app 'A' (not sure how to do that) to use "BOOL SetForegroundWindow(HWND hWnd)" B) Get a pointer to the CWnd of app 'B' (not sure how to do this either) to use "BOOL CWnd::SetForegroundWindow( )" : Dean 'Karnatos' Michaud Re: Bring An Application To The Foreground Through Another Application David Viggiano24-Jun-02 6:03 David Viggiano 24-Jun-02 6:03  Are you running under W2K or XP? If so, SetForegroundWindow no longer works unless you own the process. There is a workaround - you attach your thread to the thread with current foreground thread and then SetForegroundWindow works. Check the link for a good example. D http://www.mooremvp.freeserve.co.uk/Win32/framed_tip033.htm Re: Bring An Application To The Foreground Through Another Application Dean Michaud25-Jun-02 6:09 Dean Michaud 25-Jun-02 6:09  I need to support Win98 to WinXP... I'd noticed in the MSDN Library that SetForegroundWindow() was not working as it had before in WinXP. Thank you though : Dean 'Karnatos' Michaud Re: Bring An Application To The Foreground Through Another Application Dean Michaud24-Jun-02 7:57 Dean Michaud 24-Jun-02 7:57  Ok, after mucking around with this a little more, seems this is *one* way of getting the job done. I am calling this code once a button is pressed to bring up an application to the foreground. 1) CWnd::FindWindow() finds the window based on the file name. 2) CWnd::SetWindowPos() shows the found window as on top, without resizing it or moving it. 3) CWnd::ShowWindow() is making sure the application is not minimized/maximized. BOOL rc; CWnd* my_wnd = FindWindow(NULL, "Application-Name"); if (my_wnd != NULL) { rc = my_wnd->SetWindowPos(&wndTop, 0, 0, 0, 0, SWP_NOMOVE|SWP_NOSIZE|SWP_SHOWWINDOW); rc = my_wnd->ShowWindow(SW_SHOWNORMAL); } What I'd like to know is another way of getting the CWnd pointer to the window - I don't like writing code that depends on another applications having the same title (it very-well could change without me knowing, either by the dept. that wrote the code changing it and forgetting to notify me, or someone's changing the title of it for some purpose of their own). So, now my search moves onto looking for another way of finding a specific window that is running since FindWindow() relies on the window title not changing. : Dean 'Karnatos' Michaud Re: Bring An Application To The Foreground Through Another Application Scott H. Settlemier27-Jun-02 9:55 Scott H. Settlemier 27-Jun-02 9:55  SetForegroundWindow. with some caveats. Here's a great article : http://www.etree.com/tech/Articles/attachthreadinput.pdf And here's some code to do it: DWORD MyThreadId=GetCurrentThreadId(); DWORD ForeThreadId=::GetWindowThreadProcessId(::GetForegroundWindow(),0); HWND hForegroundMe=0; // Get handle to the window you want to place in the foreground. // For instance use EnumThreadWindows if you know the ThreadId // (perhaps you have it saved in a shared memory?) // or use EnumWindows if you know the window text of the window // you are looking for... if (GetWindowLong(hForegroundMe,GWL_STYLE)&WS_MINIMIZE) ::ShowWindow(hForegroundMe,SW_RESTORE),::UpdateWindow(hForegroundMe); if (ForeThreadId!=MyThreadId) AttachThreadInput(ForeThreadId,MyThreadId,TRUE); ::SetForegroundWindow(hForegroundMe); if (ForeThreadId!=MyThreadId) AttachThreadInput(ForeThreadId,MyThreadId,FALSE); Hooking BN_CLICKED zerver24-Jun-02 4:19 zerver 24-Jun-02 4:19  I'm experimenting with hooks, trying to prevent a BN_CLICKED message from reaching it's target window (a 3rd-party app). I've successfully hooked the event using a WH_CALLWNDPROC hook. Unfortunately this type of hook doesn't allow the message to be altered. All my attempts hooking BN_CLICKED using other hooks like WH_GETMESSAGE, WH_MSGFILTER and WH_SYSMSGFILTER have failed. These hooks receive lots of other messages, but not BN_CLICKED. Making the hooks system-wide didn't help either. Can someone tell me if what I'm trying to do is even possible? Thanks... / Z Re: Hooking BN_CLICKED David Viggiano24-Jun-02 6:10 David Viggiano 24-Jun-02 6:10  It is possible - I've done it in several applications. I have successfully used two different methods. 1) Global message hooks and 2) Remote Thread Injection. #1 works if you need to search for the target process(es) and #2 is good if you know the process already. For both cases, I use GWL_WNDPROC to replace the WndProc with my own. Then you get every message and can supress the ones you don't want the main WndProc to get. If you need some more help, let me know. I found most of the examples of how to do both #1 & #2 somewhere around CodeProject. D Re: Hooking BN_CLICKED zerver27-Jun-02 1:19 zerver 27-Jun-02 1:19  Thanks a lot, I'll check out the GWL_WNDPROC and get back to you if I need further assistance. I'm delighted to hear that my efforts trying to do this were not in vain! / Z

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