C / C++ / MFC

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What does "const vector& vars" mean? Rafferty Uy12-Oct-04 16:11 Rafferty Uy 12-Oct-04 16:11  Hello there, I have been tracing a C++ code and I encountered a declaration statement like this: const vector<int>& vars Can anyone teach me what this is and how it is used? I tried searching for references on this and I was not able to find any. Thanks so much! -Rafferty Re: What does &quot;const vector&amp; vars&quot; mean? Ryan Binns12-Oct-04 18:07 Ryan Binns 12-Oct-04 18:07  Rafferty Uy wrote: const vector<int>& vars This is a reference to a constant template vector class that has been specialised with int as its template parameter, ie. it's a reference to a constant variable-length array of ints. 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: What does &quot;const vector&amp; vars&quot; mean? Rafferty Uy12-Oct-04 20:41 Rafferty Uy 12-Oct-04 20:41  I see... could you give me an example on how to use this? or even a link to a reference will do. Sorry I really don't have an idea of this yet. I don't even know what a template in C++ is. Thanks! Rafferty Re: What does &quot;const vector&amp; vars&quot; mean? Ryan Binns13-Oct-04 1:59 Ryan Binns 13-Oct-04 1:59  I don't know of any tutorials off the top of my head. I recommend you get a good C++ book that includes a section on templates, or google for a C++ template tutorial (or both ) 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" File access rights Anonymous12-Oct-04 16:04 Anonymous 12-Oct-04 16:04  Hi, Can I rename/delete a file another process has open? Thank you, Re: File access rights Ryan Binns12-Oct-04 18:12 Ryan Binns 12-Oct-04 18:12  Anonymous wrote: Can I rename/delete a file another process has open? Simple answer: No Complex answer: You can't while it's open. You can use MoveFileEx() to delay the rename/delete until the next reboot, and let Windows do it for you at startup. 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: File access rights Sudhir Mangla12-Oct-04 18:34 Sudhir Mangla 12-Oct-04 18:34  You should check if the file is open or not before trying these operations Sudhir Mangla http://Programmerworld.net (Free books , articles and Source Code) CString undeclared?! jadegal12-Oct-04 13:38 jadegal 12-Oct-04 13:38  I was following some online examples on creating a simple user form in visual c++, and I just came upon a strange thing...that is, after putting in teh text boxes and radio buttons etc, we go to put in a button for the user to click, then according to the online instructions, by double clicking on that button it should take me to the code section where I can then define what I want the form to do...but I just noticed that in doing so, it takes me to the .h and not .cpp file to define the code! That is kind of strange..shouldn't I define my codes in the .cpp file? Also, when I try to put in additional logics, such as declaring CString variables to do stuff with it, it tells me CString is not declared...this is really strange... any assistance would be greatly appreciated... thank you! Re: CString undeclared?! Christian Graus12-Oct-04 13:55 Christian Graus 12-Oct-04 13:55  You're using MFC, right ? Christian I have several lifelong friends that are New Yorkers but I have always gravitated toward the weirdo's. - Richard Stringer Re: CString undeclared?! Yulianto.12-Oct-04 19:52 Yulianto. 12-Oct-04 19:52  Anonymous wrote: simple user form in visual c++, What version of VC++ did you use. I think You can`t do that in VC++ 6. Corect me if i`m wrong. <italic>Work hard and a bit of luck is the key to success. You don`t need to be genius, to be rich. Changing Mouse Sensitivity Anonymous12-Oct-04 13:26 Anonymous 12-Oct-04 13:26  I'm trying to disable the movement of the physical mouse, but still be able to set its position on my own, via SetCursorPos(). The only solution I could come up with is to get the current mouse sensitivity, set it to zero, then revert back to the original sensitivity when done. The promblem is that I have no idea how to do this, and could not find any information on MSDN or by searching online. Alternatively, if anyone has a better method of achieving the same thing, I would greatly appreciate it. FreeLibrary question Brian Shifrin12-Oct-04 13:06 Brian Shifrin 12-Oct-04 13:06  Any way to force process to unload library???? I working on update component ( oracle ), it seems i can do LoadLibrary and FreeLibrary when needed just ok, except for dll's been locked by OS. I am aware of debug setting for that tells XP to unload every library it is not been used, but this is way to drastic. Couple of other options comes to mind, but I don't want to reinvent the wheel and not even sure it would work. 1) From process A create process B, when done exit B hoping cleanup would unload DLL or may be just issue plain kill. 2) allocate memory, load dll (PE), do fixup entry table etc etc etc as long as darn LoadLibrary is not been used. 3) Call freelibrary until XP frees stupid library or I blow away my stack. 4) Other options? Thanks, Brian Re: FreeLibrary question Blake Miller13-Oct-04 4:36 Blake Miller 13-Oct-04 4:36  Do what everyone else does. You use MoveFileEx to get the files copied to the correct places during the system restart. Prior to restarting, add a RunOnce program that will register the DLL while the system is starting up. Tell user to reboot system. This is the 'recommended way to repalce DLL that are in use. Look at all the MS security udpates, constant reboots of machine, eh? Works for them.. should work for you! int to CString Jesus Choy Ley12-Oct-04 10:15 Jesus Choy Ley 12-Oct-04 10:15  Hello. I need pass a value stored in an int variable to a CString variable. Someone can help me? jesus choy Re: int to CString Neville Franks12-Oct-04 10:20 Neville Franks 12-Oct-04 10:20  Try searching through this message board. I think you will find this has been answered many times. Neville Franks, Author of ED for Windows www.getsoft.com and Surfulater www.surfulater.com "Save what you Surf" Re: int to CString vcplusplus12-Oct-04 11:03 vcplusplus 12-Oct-04 11:03  http://msdn.microsoft.com/library/default.asp?url=/library/en-us/vcmfc98/html/_mfc_cstring.3a3a.format.asp?frame=true[^] Re: int to CString nguyenvhn12-Oct-04 14:54 nguyenvhn 12-Oct-04 14:54  <br /> CString st;<br /> int k=10;<br /> st.Format("%d", k);<br /> Now st become "10". Is that your needed? Re: int to CString Michael Dunn12-Oct-04 20:23 Michael Dunn 12-Oct-04 20:23  See the FAQ 6.3 How can I change a number into its string representation, or vice versa?[^] --Mike-- Personal stuff:: Ericahist | Homepage Shareware stuff:: 1ClickPicGrabber | RightClick-Encrypt CP stuff:: CP SearchBar v2.0.2 | C++ Forum FAQ ---- Blocking read at end of file required Anonymous12-Oct-04 8:53 Anonymous 12-Oct-04 8:53  Hi, I need to do the following: - A process (outside my control completely) generates a file. - I need to read the file from some offset (near the end) and once I reach the end, wait at the end for more data I don't want to keep polling for more data (as I don't want to waste CPU cycles). Is there some API I can use? Cheers. Re: Blocking read at end of file required Neville Franks12-Oct-04 10:19 Neville Franks 12-Oct-04 10:19  Have a look at http://tailforwin32.sourceforge.net[^] which should give you good pointers. Neville Franks, Author of ED for Windows www.getsoft.com and Surfulater www.surfulater.com "Save what you Surf" Re: Blocking read at end of file required Anonymous12-Oct-04 10:44 Anonymous 12-Oct-04 10:44  Thanks, I definitely will. Re: Blocking read at end of file required Neville Franks12-Oct-04 10:51 Neville Franks 12-Oct-04 10:51  Good. Please register here at CP instead of posting Anonymously. I tend to ignore anonymous posts as do others. Neville Franks, Author of ED for Windows www.getsoft.com and Surfulater www.surfulater.com "Save what you Surf" can't set input focus hyling12-Oct-04 8:12 hyling 12-Oct-04 8:12  Hi, I have a CDialog which contains several CEdit fields. I would like to be able to set one of those CEdit fields to have initial input focus. I'm trying to use the following code but it does nothing. I've made sure editField1 is valid at that point. <br /> BOOL MyDialog::OnInitDialog() <br /> {<br /> CDialog::OnInitDialog();<br /> editField1.SetFocus();<br /> <br /> return true;<br /> }<br /> Thoughts/hints? Thanks Hua-Ying Re: can't set input focus Neville Franks12-Oct-04 10:24 Neville Franks 12-Oct-04 10:24  Calling SetFocus() in a dialog (or anywhere else) can be problematic. You could try editField1.PostMessage( WM_SETFOCUS ... ) which will have a far better chance of working. You need to test stuff like this on all patforms your app will run on. Neville Franks, Author of ED for Windows www.getsoft.com and Surfulater www.surfulater.com "Save what you Surf" Re: can't set input focus hyling12-Oct-04 10:45 hyling 12-Oct-04 10:45  When I tried what you suggested, the CEdit field stops accepting user input(just beeps when you type)? It does put the caret in the edit box when the dialog starts up though. editField1.PostMessage(WM_SETFOCUS); Hua-Ying

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