C / C++ / MFC

FirstPrevNext

DDEML Valeria2-May-02 8:08 Valeria 2-May-02 8:08  Hi, I have a DDE server running on a Windows 98 plattform. A DDE client , executed by IIS (internet Information Server), communictes with it and everything is OK. Both, client and server uses ddeml. When I try to do the same on WinNT or Windows 2000 I have the following problem: the DDE client , executed by IIS, attempts to communicate with the DDE server but, the server never receives the message. But, when I run the DDE client from the shell (on NT or 2000), again, everything is right. The client sends the message and the server receives it. The DDEspy reports DDE activities when the client is executed from shell, but when it is called for the IIS, DDEspy doesnt report DDE activity. Could anybody help me? Valeria león Re: DDEML Tim Smith2-May-02 8:19 Tim Smith 2-May-02 8:19  Probably a security problem. The client and the server are probably running on different desktops and thus don't see each other. Tim Smith I know what you're thinking punk, you're thinking did he spell check this document? Well, to tell you the truth I kinda forgot myself in all this excitement. But being this here's CodeProject, the most powerful forums in the world and would blow your head clean off, you've got to ask yourself one question, Do I feel lucky? Well do ya punk? Re: DDEML Valeria2-May-02 9:34 Valeria 2-May-02 9:34  Hi, Both applications: DDE client and DDE server are running in https/cgi-win. If they are in different desktops, how can I solve this? On Windows 2000, my system file is FAT. TANK YOU. Valeria León How do you load a bitmap? atomicluis2-May-02 7:58 atomicluis 2-May-02 7:58  I have created this dialog based application consisting of several pages (property pages) and I would like to load a bitmap that I created. I want this bitmap to be displayed on the 1st page. thank you very much! = ) Re: How do you load a bitmap? Philip Patrick2-May-02 10:20 Philip Patrick 2-May-02 10:20  The basic way is to use LoadImage (which accepts a file path) to get a handle to the bitmap, then SetBitmap of CStatic control to display it. You need to make sure that the size of your static is equal or more than the size of the bitmap loaded, otherwise it won't be displayed Philip Patrick Web-site: www.stpworks.com "Two beer or not two beer?" Shakesbeer Need Web-based database administrator? You already have it! Stupid Task List.... nw603122-May-02 7:10 nw60312 2-May-02 7:10  Does anybody know of how to completely turn off the task list thing in VC++.NET? I thought I had set all the VC 6 compatibility, but everytime I hit F4 in the output window it opens the task list. TIA! Re: Stupid Task List.... Tom Archer2-May-02 7:57 Tom Archer 2-May-02 7:57  Tools->Options->Environment->Keyboard If you select the VC6 scheme, set focus to the Press shortcut keys edit control and click the F4 key, you'll see that in that scheme, it resolves to a the View Next Task command. Simply change it to whatever you want Cheers, Tom Archer Author, Inside C# A total abstainer is one who abstains from everything but abstention, and especially from inactivity in the affairs of others. FTP And sockets Aaron Schaefer2-May-02 5:52 Aaron Schaefer 2-May-02 5:52  Hi, I'm playing with an FTP client, and I'm trying to figure out how to download files from the server in PASSIVE mode. The problem is, I can't figure out how to tell when the client should stop trying to recv data from the data socket and close the socket. In normal mode, the server would close the socket, so I could simply recv until I got a CLOSE event on the socket, then just read the remaining queued data. So, how do I tell when a transfer is finshed in PASV mode? I was originally thinking that I could wait for the 226 - Transfer OK on the control socket, and then stop when got that, but that seems to arrive before all of the data has arrived on the data socket, so it's not very reliable. Should I just count the number of bytes received and compare to the file size indicated by the server? Thanks Building C++ Application Stew2-May-02 5:48 Stew 2-May-02 5:48  I wrote a Pro*C application in VC++ on Windows 2000 and I built it and it runs fine on my machine, but when I try to execute it on the server running NT, it doesn't execute. Not sure if I'm building it wrong or anything like that. I've never had this problem before. Does anyone have any ideas? Re: Building C++ Application Anders Molin2-May-02 8:40 Anders Molin 2-May-02 8:40  You might be using some features not availiable on NT4, there's plenty of stuff that works on Win2k that doesn't work on NT4... - Anders Money talks, but all mine ever says is "Goodbye!" String to valid XML tag Braulio Dez2-May-02 5:37 Braulio Dez 2-May-02 5:37  Hi, Is there any function that converts one string into a valid XML tag ? ( In my app the user types some names for some values, then I want to use that names as tag names but I would like to filter them to avoid having a bad formed XML file). Thanks, Bye ! Braulio Re: String to valid XML tag Niklas L2-May-02 5:53 Niklas L 2-May-02 5:53  If you are using IXMLDOMDocument, if I remember it correctly, it's all taken care of for you. Are you maybe just looking for a general escape function? Re: String to valid XML tag Braulio Dez2-May-02 6:06 Braulio Dez 2-May-02 6:06  Hi, Yes, I´m using MsXml, but I think CreateElement throws one exception when you pass a wrong tag name, I don´t know if maybe there is one method there that converts from the string to a valid tag name Re: String to valid XML tag Niklas L2-May-02 6:48 Niklas L 2-May-02 6:48  Yes, the tag names and attribute names are different. You are not allowed to use special characters there. In attribute values and text data however you can just pass in anything you like. Calling pXMLDoc->createProcessingInstruction("xml", "version='1.0' encoding='UTF-8'"); will give a coding of your choice. (just tried it) As for tag names and attribute names, I suspect yuo have to 'destroy' data to get where you want, i.e. replacing e.g. '>' and '<' and all other 'illegal' characters with '_'. Memory Leaks dazinith2-May-02 5:25 dazinith 2-May-02 5:25  hrm. i have about 8 different memory leaks, and i can't seem to track em down.. so i have some questions.. 1) do memory leaks only occur when the 'new' keyword is used to create a pointer, and that pointer is never deleted (using 'delete' keyword)? 2) if my memory leaks say 'CObject' is there any way to tell what class it is? i am using several classes i derived from CObject, and i use CObArray quite alot too.. i know that after im done with a CObArray that i have to loop through it and delete all the objects, and im doing this everywhere.. any help in general would be great.. i don't want to have any memory leaks.. thanks! -dz Re: Memory Leaks Ravi Bhavnani2-May-02 5:29 Ravi Bhavnani 2-May-02 5:29  dazinith wrote: do memory leaks only occur when the 'new' keyword is used to create a pointer You can also get memory leaks when you create GDI objects such as pens and brushes and forget to unselect them out of the DC and delete them. dazinith wrote: i know that after im done with a CObArray that i have to loop through it and delete all the objects, Perhaps you're forgetting to do a RemoveAll() after you delete the individual objects? /ravi "There is always one more bug..." http://www.ravib.com ravib@ravib.com Re: Memory Leaks Tom Archer2-May-02 5:37 Tom Archer 2-May-02 5:37  Actually, you do not need to remove items from an array once they've been deleted. I do it as a sanity check so that after the delete loop I can assert if any items remain in the array. However, once you've deleted the actual item in memory, the array simply points to an invalid item for which no memory is still allocated. Cheers, Tom Archer Author, Inside C# A total abstainer is one who abstains from everything but abstention, and especially from inactivity in the affairs of others. Re: Memory Leaks Ravi Bhavnani2-May-02 5:45 Ravi Bhavnani 2-May-02 5:45  Ah. Looks like CObArray's destructor cleans up after itself. Thanks for the tip! /ravi "There is always one more bug..." http://www.ravib.com ravib@ravib.com Re: Memory Leaks Tom Archer2-May-02 5:55 Tom Archer 2-May-02 5:55  No problem. I've actually spent so much time in the guts of MFC that I've often thought of writing a second edtion of the MFC Internals book. Do you think such a book would sell? I think it would. I think there are stil enough people new to MFC that would get a tremendous amount out of a book that explains how their apps are working internally. The thing that I would add to such a book, however, is a section at the end of each chapter that basically says "Ok. You know how this bit works internally. Here's where you can apply this knowledge". I think that would make the book more practical instead of coming off as just trivia. What do you think?+ Cheers, Tom Archer Author, Inside C# A total abstainer is one who abstains from everything but abstention, and especially from inactivity in the affairs of others. Re: Memory Leaks Ravi Bhavnani2-May-02 6:05 Ravi Bhavnani 2-May-02 6:05  Tom, I for one would welcome (more) info on MFC's internals. And as you pointed out, real-world usage examples would come in *very* handy. /ravi "There is always one more bug..." http://www.ravib.com ravib@ravib.com Re: Memory Leaks Paresh Solanki2-May-02 6:43 Paresh Solanki 2-May-02 6:43  Sounds like a good idea. There's a couple of people here (including me) who'd like to know more about MFC and how to apply it. A problem I have is that I know what I want a program to do, but not how to achieve that in a windows environment. CP has helped a lot, but sometimes a book of 'typical' applications would help too Paresh Solanki There is no substitute for genuine lack of preparation. Re: Memory Leaks Tom Archer2-May-02 5:42 Tom Archer 2-May-02 5:42  dazinith wrote: any help in general would be great.. i don't want to have any memory leaks.. Always a worthy goal The way to track down memory leaks in an MFC application - short of spending hours and hours manually tracking down and tracing on every new and delete operation - is to use the CMemoryState class. There are actually several ways to use this class so instead of me enumerating them all, I'll just point you to the article entitled "Taking Memory Snapshots" in your MSDN online help. Good luck! Everybody hates those *#*& things! Cheers, Tom Archer Author, Inside C# A total abstainer is one who abstains from everything but abstention, and especially from inactivity in the affairs of others. Re: Memory Leaks Niklas L2-May-02 5:44 Niklas L 2-May-02 5:44  Make sure you have no code that looks like CObArray vec; for (int i = 0; i < vec.GetSize(); i++) { delete vec[i]; vec.RemoveAt(i); } where just every other element is deleted. This one I've seen lots of times. Re: Memory Leaks dazinith2-May-02 5:51 dazinith 2-May-02 5:51  my deleting of CObArray's looks like this // delete all items in the text list if (m_oaText->GetSize() > 0) do { CTextPrintObject* pObj = (CTextPrintObject*)m_oaText->GetAt(0); delete pObj; m_oaText->RemoveAt(0); } while (m_oaText->GetSize() > 0); m_oaText->RemoveAll(); delete m_oaText; does this look right? -dz Re: Memory Leaks Niklas L2-May-02 6:00 Niklas L 2-May-02 6:00  Sure looks functional enough. (Even though quite inefficient calling RemoveAt(0), since the array has to do a copy of all remaining items for each turn in the loop. Maybe you should consider looping backwards.) Does you CTextPrintObject allocate any memory, not deleted in it's destructor?

Last Visit: 31-Dec-99 18:00     Last Update: 30-May-24 17:38 Refresh ᐊ Prev1...17019170201702117022170231702417025170261702717028 Next ᐅ

General    News    Suggestion    Question    Bug    Answer    Joke    Praise    Rant    Admin   

Use Ctrl+Left/Right to switch messages, Ctrl+Up/Down to switch threads, Ctrl+Shift+Left/Right to switch pages.