C / C++ / MFC

FirstPrevNext

C++ Question. WREY7-Mar-04 14:05 WREY 7-Mar-04 14:05  If I have a number that is 16 digits (or could be more) long (which I've declared as type 'double'), but which seems to get reformulated as a number with a decimal point and an exponent. How can I keep the computer from doing that type of reformulation and perserve the number in the long form that it originally received? Thanks for any insight. William Fortes in fide et opere! Re: C++ Question. Prakash Nadar7-Mar-04 14:58 Prakash Nadar 7-Mar-04 14:58  Double stores the data in IEEE format you dont have to worry how it stores the data or how the calculation is done. When you print out the double use appropriate format, %f, so that you see the numbers properly. This space is empty. Re: C++ Question. WREY7-Mar-04 15:58 WREY 7-Mar-04 15:58  Thanks for replying. The question is not about which format the numbers are stored, nor is it about how the data is stored. It's whether there is a method by which I can prevent the computer from storing it that way (using exponential notation). I would just like for the computer to store it in its long original format. William Fortes in fide et opere! Re: C++ Question. Prakash Nadar7-Mar-04 16:11 Prakash Nadar 7-Mar-04 16:11  You cant achive that using double use long or __int64 instead. MSN Messenger. prakashnadar@msn.com Re: C++ Question. Steve S7-Mar-04 22:20 Steve S 7-Mar-04 22:20  William, using printf and friends, I don't believe you can, but check out gcvt in the documentation. While a little tricky to use, I believe it will let you do what you want. Steve S MFC: Can't insert controls after inserting an ActiveX Control!! Davex_7-Mar-04 12:21 Davex_ 7-Mar-04 12:21  Hi, It's the first time I'm using ActiveX Control. I'm working with VS .NET 2003 and I must say that I'm a beginner to C++ and MFC. My problem is after I have inserted an ActiveX Control (any ActiveX control), I can't insert any other controls, like a Button, Edit Control, etc. I select the control I want and when I click to insert it where I want, nothing happen! This problem is only in my main dialog: the CFormView dialog. I need help here, I tried a few things, but without success! Thanks, Dave Re: MFC: Can't insert controls after inserting an ActiveX Control!! Davex_7-Mar-04 12:58 Davex_ 7-Mar-04 12:58  Ok, I found out that the ActiveX control seems to be a coincidence. It's more like a have reach a limit on the quantity of controls I can have in my dialog!!! Is it possible? I can insert one more control, and after that, no more control can be inserted!!! I don't know why it's doing this! Dave Re: MFC: Can't insert controls after inserting an ActiveX Control!! Ryan Binns7-Mar-04 17:22 Ryan Binns 7-Mar-04 17:22  Davex_ wrote: It's more like a have reach a limit on the quantity of controls I can have in my dialog!!! Is it possible? The Visual C++ dialog edit only supports 256 controls on the dialog. Windows allows many more, of course, but you'll have to either manually edit the resource file, or create the controls at runtime. Ryan "Punctuality is only a virtue for those who aren't smart enough to think of good excuses for being late" John Nichol "Point Of Impact" Re: MFC: Can't insert controls after inserting an ActiveX Control!! Davex_8-Mar-04 4:49 Davex_ 8-Mar-04 4:49  Thanks, that's exactly my problem! I did a fast count of 249 controls! I'll redesign my dialog. Interfacing webcam with mfc hurr1can37-Mar-04 10:54 hurr1can3 7-Mar-04 10:54  Hi. I have a webcam and I want to capture frames from the webcam in my application. I am using c++ mfc programming. The main thing that I want to do is to capture frames at certain interval through my mfc application. Anyone got any advise or idea on how to do it? Thank you for any reply. Re: Interfacing webcam with mfc Alexander M.,7-Mar-04 11:07 Alexander M., 7-Mar-04 11:07  what does MFC have to do with a webcam?! this question is silly, because when u know how to capture from a webcam, then u know how to do it from MFC. Don't try it, just do it! Re: Interfacing webcam with mfc Andrew Walker7-Mar-04 11:54 Andrew Walker 7-Mar-04 11:54  You'll probably need the DirectX SDK. DirectShow has some examples that capture from cameras and display the output in a window (see the playcap example) 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 Adding 2 very long numbers ?! engineer_ali7-Mar-04 9:20 engineer_ali 7-Mar-04 9:20  Hello please if anyone can help me in solving this prob.! I have to implement a C++ program which adds any 2 long numbers such as : 12345654151464 + 454645454 , or any other 2 similar numbers. I should use classes for this problem! so any suggestion please ? thank u ! Re: Adding 2 very long numbers ?! Alexander M.,7-Mar-04 10:12 Alexander M., 7-Mar-04 10:12  use __int64 for big numbers, for very big numbers you have to code an own lib. Don't try it, just do it! Re: Adding 2 very long numbers ?! Jörgen Sigvardsson7-Mar-04 11:58 Jörgen Sigvardsson 7-Mar-04 11:58  OLE/COM DECIMALs can hold 96 bit numbers. Take a look at the docs in MSDN. -- Ich steig dir nach.. Du riechst so gut.. Gleich hab ich dich! Sound In an App mavgoose7-Mar-04 9:16 mavgoose 7-Mar-04 9:16  How is it possible to get a program to play Midi \ Wav file when a button is pressed? I need my application to include 2-3 sound files which can be played when a button is pressed is this possible? if so how. And how do you display a bitmap on a button? Re: Sound In an App Mazdak7-Mar-04 9:39 Mazdak 7-Mar-04 9:39  mavgoose wrote: And how do you display a bitmap on a button? Search Botton control in this site and find lots if exampls. mavgoose wrote: How is it possible to get a program to play Midi \ Wav file when a button is pressed? Look into Audio part of this site. Mazy "A bank is a place that will lend you money if you can prove that you don't need it." - Bob Hope Re: Sound In an App Alexander M.,7-Mar-04 10:13 Alexander M., 7-Mar-04 10:13  sndPlaySound API Don't try it, just do it! Re: Sound In an App Curi0us_George7-Mar-04 15:56 Curi0us_George 7-Mar-04 15:56  The simplest way to play an audio file on windows is to use the PlaySound function. http://msdn.microsoft.com/library/default.asp?url=/library/en-us/multimed/htm/_win32_playsound.asp Putting a bitmap on a button? Depends on whether you're using mfc, wtl, win32 api, .net or something else. There's probably a dozen tutorials on this site alone explaining it, though. Compiler Option Mazdak7-Mar-04 8:41 Mazdak 7-Mar-04 8:41  I have an username & password inside my exe file. I opened it with notepad and saw they are in pain text somewhere inside it. Somebody told me that there is an compiler option that encrypt variables or something like this. Is there such a thing exist or he sucks? Mazy "A bank is a place that will lend you money if you can prove that you don't need it." - Bob Hope Re: Compiler Option Alexander M.,7-Mar-04 10:19 Alexander M., 7-Mar-04 10:19  nothing like that... encrypt it using a PE crypter or just save the MD5(or other) hash of the password. Don't try it, just do it! Re: Compiler Option Mazdak7-Mar-04 10:23 Mazdak 7-Mar-04 10:23  Alexander M. wrote: encrypt it using a PE crypter or just save the MD5(or other) hash of the password Well, then the Key is visible and could be decrypted, but of course with a little more job. Mazy "A bank is a place that will lend you money if you can prove that you don't need it." - Bob Hope Re: Compiler Option Alexander M.,7-Mar-04 10:56 Alexander M., 7-Mar-04 10:56  no chance to decode MD5 Don't try it, just do it! Re: Compiler Option Michael Dunn7-Mar-04 10:27 Michael Dunn 7-Mar-04 10:27  Not a compiler option, but check out http://www.codeproject.com/string/cxr.asp[^] which is a great compile-time tool to encrypt literals. I use it in several of my apps. --Mike-- Personal stuff:: Ericahist | Homepage Shareware stuff:: 1ClickPicGrabber | RightClick-Encrypt CP stuff:: CP SearchBar v2.0.2 | C++ Forum FAQ ---- Pinky, are you pondering what I'm pondering? I think so Brain, but if we shaved our heads, we'd look like weasels! Re: Compiler Option Mazdak7-Mar-04 18:53 Mazdak 7-Mar-04 18:53  Thanks Mike and others for reply. Mazy "A bank is a place that will lend you money if you can prove that you don't need it." - Bob Hope

Last Visit: 31-Dec-99 18:00     Last Update: 9-Jun-24 7:43 Refresh ᐊ Prev1...13475134761347713478134791348013481134821348313484 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.