Q about length and complexity of expressions in MSVC6

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  - 1
    - Passing data between the parent process and bat/cmd I have an unmanaged program that can be extended with custom batch scripts. I use CreateProcess() to execute whatever has been specified by the user. Most likely, it's a .bat/cmd file. The user needs to have an easy way to specify several return values in the batch file, so that these values can be processed by the parent executable. Environment variables would be an ideal solution. The problem is, the batch doesn't seem to be able to change the parent's environment variables. Neither the parent can read the modified environment of the child process. ERRORLEVEL is not enough, as the batch file needs to return string values. stdout/stderr redirection is no good either, as the content of the batch file (say, nested calls to other .bat files) may interfere with the output. So my question is, what's and easy and effective way to pass several returns values from a batch file to the parent executable? Thanks, Andrew Tag: Q about length and complexity of expressions in MSVC6 Tag: 266836
  - 2
    - Unicode text file read Hi, I'm trying to just read a unicode text file on a win xp system and popup a message box with its contents: std::wifstream wifile("C:\\unicode.txt"); if (wifile.is_open()) { wchar_t wszBuffer[MAX_PATH]; while (wifile.getline(wszBuffer, MAX_PATH)) { AfxMessageBox(wszBuffer); } } But my message box just has strange characters in it (not the ones in the unicode text file). How can we read these unicode files in? Thanks Tag: Q about length and complexity of expressions in MSVC6 Tag: 266835
  - 3
    - Visual C++ Express problem I try to compile a console application, just std::cout << "Hello World"; nothing else. and when I try to run it in debug mode, it gives me following error: this application failed to start because MSVCP80D.dll was not found. Re-installing the application may fix the problem. How do I fix this? although it works fine if I compile it in release mode. Thanks. Tag: Q about length and complexity of expressions in MSVC6 Tag: 266831
  - 4
    - FindWindowEx HWND window = ::FindWindow(NULL,"Internet connect"); while(window == NULL) { window = ::FindWindow(NULL,"Internet connect"); } HWND general = ::FindWindowEx(window,0,"General",NULL); I retrieve always general as NULL. I'm using the internet connection window with winXP where there are two tabs, general and details. How is possible to retrieve the correct handle to general window? Tag: Q about length and complexity of expressions in MSVC6 Tag: 266830
  - 5
    - how I can use IMSL 6.0 in visual studio .net 2003? following codes make link errors. #include "imsl.h" main() { int n=3; float *x; float a[] = {1.0, 3.0, 3.0, 1.0, 3.0, 4.0, 1.0, 4.0, 3.0}; float b[] = {1.0, 4.0, -1.0}; x=imsl_f_lin_sol_gen(n,a,b,0); imsl_f_write_matrix("Solution, x, of Ax = b", 1, 3, x, 0); } error LNK2019: _imsl_f_write_matrix... error LNK2019: _imsl_f_lin_sol_gen... (sorry for my short error messages. The remaning messages are Korean. So you can't understand. Anyway, these are link errors) how I can use IMSL package? Of course, I added "C:\Program Files\VNI\imsl\cnl600\ms32pc\lib" and "C:\Program Files\VNI\imsl\cnl600\ms32pc\include" paths to directory setting in Visual Studio IDE. But, it didn't work. Taesoon Tag: Q about length and complexity of expressions in MSVC6 Tag: 266827
  - 6
    - GlobalUnlock doesn't unlock Memory object I have a moveable allocated Memory object, I lock the Memory object but when I try to unlock, I couldn't although the lock count is decremented but the globaunlock returns zero, and when I try to find out this error using the GetLastError, the code is NO_ERROR "0" .. Can anybody help me to know why this happens Tag: Q about length and complexity of expressions in MSVC6 Tag: 266818
  - 7
    - two Ethernet cards Is there any way to handle two Ethernet cards in VC++? I want to write a program that reads a packet from one, delays 250ms, and spits the packet out the other. Tag: Q about length and complexity of expressions in MSVC6 Tag: 266817
  - 8
    - Getting cout<<fixed to work. Hello, I am trying to write a very very very simple program with VC++ 6. I have the following headers: #include "stdafx.h" #include "cmath" #include "iostream.h" #include "iomanip.h" then trying to use: cout << fixed will produce the error 'fixed' : undeclared identifier. This is after having turned off the "use precompiled headers". Before, when I did have the use precompiled headers, using fixed would compile, but it would actually write out a hex value when you did count << fixed. Specifically, it would write 0x00401073. I found that using setiosflag(ios::fixed) will work, but why doesn't the normal fixed work? Also, can anyone explain pre compiled headers, and why I need the include "stdafx.h" and "using namespace std;" when nothing in my books show these lines? I'm guessing its a VC++ thing, but can I do without them? Tag: Q about length and complexity of expressions in MSVC6 Tag: 266816
  - 9
    - Coding and Compiling older vc++6 projects and code in VS2005. I am a returning programmer to VS after having programmed in VC++6 a few years ago. I got my hands on VS2005 and I was wondering how to compile my older programs and projects without converting or upgrading them to the current version or standard of VS2005. I acknowledge my post might seem to be naive or might have been addressed numerous times before but the fact is I havent been able to dig around for a convincing reply and I would immensely appreciate any help in this regard on configuring the VS2005 IDE compiler to compile old VC++6 Programs, code and solutions. Thanks a lot in advance for sparing your time and answering my post. Tag: Q about length and complexity of expressions in MSVC6 Tag: 266812
  - 10
    - Mixing Release and Debug binaries I've encountered a few quite spurious-looking crashes in Debug builds of some modules, when the rest of the modules are in Release build. I recall reading about it before, and found one reference at the bottom of: http://groups.google.com/group/microsoft.public.vc.ide_general/browse_thread/thread/26060e3b6b580c04/75bc748c51079992?lnk=st&q=&rnum=1&hl=en#75bc748c51079992 just now. So this is correct, isn't it: "You can not mix debug and release builds of executables (DLLs or EXEs). Well not unless you do not use the MFC and the Microsoft C Runtime libraries." Tag: Q about length and complexity of expressions in MSVC6 Tag: 266804
  - 11
    - Why GetWindowText returns empty string Hi Experts: I have a small console application which tries to read out the content of the "Address" edit field in an IE browser window. I can get the window handle of the "Address" edit control but the GetWindowText returns empty string and GetLasterror returns 203; under error Lookup, the error means "The system could not find the environment option that was entered". No idea what it means. The window handle of the "Address" edit should be correct since it is the same as the one shown by the Spy++ program. I can also get the control's class name correctly. The Spy program shows the content of the Address edit correctly. I just wonder what I'm missing here? Thanks In Advance! Polaris Tag: Q about length and complexity of expressions in MSVC6 Tag: 266802
  - 12
    - shellexecuteex in windows service, to run the app persistently I created a service which uses shellexecuteex and WaitForSingleObject to open an application. my requirement is to keep the app running until the service is stopped, even if the user terminates the app from task manager. here is my code but it doesn't restart the app when it is closed. any help is appreciated, thanks restart: ShExecInfo.cbSize = sizeof(SHELLEXECUTEINFO); ShExecInfo.fMask = SEE_MASK_NOCLOSEPROCESS; ShExecInfo.hwnd = NULL; ShExecInfo.lpVerb = NULL; ShExecInfo.lpFile = szPath; ShExecInfo.lpParameters = ""; //"service"; ShExecInfo.lpDirectory = NULL; ShExecInfo.nShow = SW_SHOW; ShExecInfo.hInstApp = NULL; ShellExecuteEx(&ShExecInfo); WaitForSingleObject(ShExecInfo.hProcess,INFINITE); CloseHandle(ShExecInfo.hProcess); goto restart; Tag: Q about length and complexity of expressions in MSVC6 Tag: 266795
  - 13
    - Shell dll can't be in Unicode? I downloaded a Microsoft sample of Desk band (adding custom band to the taskbar) here : http://msdn.microsoft.com/archive/default.asp?url=/archive/en-us/samples/internet/components/bandobjs/default.asp It was compled and run good when I compiled with "Use Multibyte-character set". But when I compiled it with "Unicode", this caused error. <code> STDMETHODIMP CDeskBand::GetCommandString( UINT idCommand, UINT uFlags, LPUINT lpReserved, LPSTR lpszName, UINT uMaxNameLen) { .... case IDM_COMMAND: lstrcpy(lpszName, TEXT("Desk Band command help text")); ...... </code> Error 6 error C2664: 'lstrcpyW' : cannot convert parameter 1 from 'LPSTR' to 'LPWSTR' I couldn't fix it and it didn't seem to be critical code to run the application, so I commented it out like //lstrcpy(lpszName, TEXT("Desk Band command help text")); Then it was compiled. I ran it but it didn't work. First of all, the menu texts were truncated. The "Desk &Band Command" -> "Desk &B", "Sample &Tool Band" -> "Sample &T" and so on. And the bands didn't appear. All I changed were "Use Unicode" and commented out 3 string errors. Should shell dll be in multibyte? If you have Visual C++ please download the sample and compile it with Unicode. And teach me what is wrong please. Thanks. PS: I used Visual Studio .NET 2005 under Windows XP. Tag: Q about length and complexity of expressions in MSVC6 Tag: 266792
  - 14
    - C4267 with std::deque<size_t> Dear all, we have encountered a very strange warning in a very specific contex: using a std::deque with size_t on VStudio 2003, warning level 4 and an exported bool vector, i.e.: //1.cpp #include <deque> #define CLASS_EXPORT __declspec(dllexport) //for explicit (DLL) instantiation of vector's: #pragma warning(push) #pragma warning(disable: 4251) //warning C4251: ... needs to have dll-interface to be used by clients, (TODO: can be dangerous however) #include <vector> #pragma warning(pop) //explicit (DLL) instantiation template class CLASS_EXPORT std::vector<bool>; int main() { //std::deque<unsigned> tmp1; std::deque<size_t> tmp; tmp.resize(3); return 0; } A compiler bug I presume? wkr, me Tag: Q about length and complexity of expressions in MSVC6 Tag: 266786
  - 15
    - Minimize and mazimize dialog Hi, I have a basic question in MFC Dialogs. Is it possible to minimize the dialog and perform some operations and restore the dialog again? For Example: this->ShowWindow(SW_HIDE); //capture the screen this->ShowWindow(SW_SHOW); Is it possible to do the above thing? I am new to MFC development. The dialog gets closed, when i executed the above lines of code. Please let me know how to perform this functionality. Thanks... Tag: Q about length and complexity of expressions in MSVC6 Tag: 266783
  - 16
    - MDI forms and Dlls (visual C++ 2005) I will loose it very soon! I have one mdi parent and two mdi childs, the parent and the childs are in different dlls ( = three dlls) I can load the childs and view them from the parent and even manage them from there, BUT I can't get the child to communicate with eachother! What I need is e.g. childA to react on an event and send informaton to childB. Can anyone, please, post a link to a tutorial on this matter, I would be most grateful! Tag: Q about length and complexity of expressions in MSVC6 Tag: 266778
  - 17
    - How can I compile this code? Dear ladies and gentlemen, I am interesting in Computer Graphics programming with VC. I found a piece of code segment in a book, the code is in the following: ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ CDC *pDC = GetDC(); if (! pDC->GetDeviceCaps(RASTERCAPS) & RC_PALETTE) { AfxMessageBox("Current system doesn't support Palette."); return; } CString str; int nColorNum = pDC->GetDeviceCaps(SIZEPALETTE); str.Format("Current system palette could simultaneously display a number of colors is %d.", nColorNum); AfxMessageBox(str); int nColorReserved = pDC->GetDeviceCaps(NUMRESERVED); str.Format("The reserved color count of the current system palette is %d.", nColorReserved); AfxMessageBox(str); ReleaseDC(pDC); ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ I created a MFC project with VC in the Visual Studio .NET 2003 . When I compile this code above, the compiler gives me the following error code: error C2660: ¡°GetDC¡± : Function doesn't accept 0 parameters. How can I compile this code successfully? Help me, please. By the way, where can I find a newsgroup specialized for the Computer Graphics Development with VC++ .NET? Thank you very much. Best regards. Xiaoming Tag: Q about length and complexity of expressions in MSVC6 Tag: 266766
  - 18
    - automatically rename Is there any way to rename a variable in VC++ so it gets automatically renamed throughout the code? Tag: Q about length and complexity of expressions in MSVC6 Tag: 266760
  - 19
    - AfxBeginThread Is there any automatic way to have AfxBeginThread or some other thread creation function call a class's member function directly? I don't see how the "this" pointer would get there. Tag: Q about length and complexity of expressions in MSVC6 Tag: 266747
  - 20
    - A matter of style? Hi All, I have seen if tests written both of the ways shown below. Is this just considered a matter of personal style or do you feel there's some inherent advantage of doing it one way or the other? I typically do it the second way. if ( 0 == MyFunc( stuff) ) { } if ( MyFunc( stuff ) == 0 ) { } - Arnie Tag: Q about length and complexity of expressions in MSVC6 Tag: 266742
  - 21
    - WinForms and header filers Hi, I recently posted this question in another group, but this group I believe is a better choice for this topic: I am working on my very first project in Visual C++ 2005 and had just created my very first form (Windows Form) , added a button, a meny and other stuff a regular project contains. But then it struck me that when adding events and such (in this case events) it created a definition for the method (event handler) in the header file that was created when I created the form. So the event code was both the declaration and the definition! As a C++ programmer, that turned my stomach inside out! What I do want is the declaration in the headerfile and the definition (the logic) in a separate source file. The project is very large (! , and a rewrite from another development platform) and a good structure is critical for the success of the project. So, how to *automaticlly*, when adding a new event, put the declaration in the header file (that is connected to the form) and the definition in a separate source file (.cpp) Any answer or link to a resource is welcome! (hope you understand what I am after) Tag: Q about length and complexity of expressions in MSVC6 Tag: 266727
  - 22
    - serialiazation, carchive issue with vc8 and vc6 Hi all I've recently exported one of our tools to VC8, after some minor changes it compiles and appears to work ok, it can open and close files which it has created etc. The vc8 migrated app exports a file using carchive which again appears to be workign fine except when it is to be read using an application compiled using vc6. Are there any known problems when reading vc8 serialized files with a vc6 product. Note that migrating the vc6 project to vc8 is currently not an option Tag: Q about length and complexity of expressions in MSVC6 Tag: 266726
  - 23
    - V2005 Syntax Highlighting (new words?) Hi, Does anyone know if it is possible to (and if so how) to add new words to the syntax highlighting list on Visual Studio 2005. Although not a keyword, I wish to make the symbol 'Ascii' highlighted to make it stand out from the rest of the code and improve readability. -- - Mark Randall http://www.temporal-solutions.co.uk http://www.awportals.com Tag: Q about length and complexity of expressions in MSVC6 Tag: 266719
  - 24
    - When to free BSTR after casting to CString (client or COM server) Hey All, I am wondering when I should free a BSTR that is past to a COM component and cast to a CString for internal use. Specifically, say I've declared a function like this in my COM component: HRESULT Test([in] BSTR arg); The client has to give my Test function a valid BSTR object. Perhaps that looks something like this: BSTR s; s = SysAllocString(L"Hello"); Test(s); SysFreeString(s); // Should I free this here... Then, say my Test function is implemented like this: HRESULT Test(BSTR arg) { CString s(arg, SysStringLen(arg)); SysFreeString(arg); // or should it be freed here? // Do stuff w/ the CString s. return S_OK; } As you can see, I'm a little confused as to where the BSTR should be freed, in the client or server. I am guessing it should be freed in the client, but I wanted to get a second opinion on that. TIA! -- Regards, Travis Spencer Tag: Q about length and complexity of expressions in MSVC6 Tag: 266718
  - 25
    - Linking error Error return code-'0x458' I tried to compile VC4.0 application in VC++8.0 version. here some of the linked to create DLL files. Those libraries were compiled in 32 bit architecture. The *.obj of the *.cpp files are generated properly, While linking those obj with existing lib(32bit architecture) I am getting the folllowing error. --------------------------------------------------------------------- Microsoft (R) Program Maintenance Utility Version 8.00.50727.42 Copyright (C) Microsoft Corporation. All rights reserved. link.exe @C:\DOCUME~1\ADMINI~1\LOCALS~1\Temp\1\nm138.tmp CommonDLL.obj : fatal error LNK1112: module machine type 'x64' conflicts with target machine type 'X86' NMAKE : fatal error U1077: '"C:\Program Files (x86)\Microsoft Visual Studio 8\VC\bin\amd64\link.exe"' : return code '0x458' Stop. -------------------------------------------------------------------------------------------- my question is.. Whether can we link 32-bit library in 64-bit production environment? does it work? I am waiting for any one reply. Tag: Q about length and complexity of expressions in MSVC6 Tag: 266714
- Next
  - 1
    - Speed problem Hi, I have a small problem here. I put in a paper today, which was basically a programming project for a sudoku solver. I got the programm working without a problem, but somehow the algorithm isn't running as fast as I thought it would. I talked to some of my colleagues and they basically told me that their algorithms were mostly not more complex than mine. Mostly even more simply, yet their programs solved a certain set of 100 sudokus in under 2 minutes, where mine needed 15 minutes. I activated all optimization options, used /O2 in Visual C++ but that only gave me like 2 seconds less computing time. I went throught the algorithm over and over and I am sure that it does work correctly, I put it on 20000 different sudokus in a file I found and it solved them all in a time of about 1.6 seconds per sudoku, which is simply not fast enough. Problem is I don't have any idea why it is so slow, while other programs which do basically do exactly the same are doing it so much faster. Don't missunderstand me, I don't want to get you to help me get more points, I put the project in already anyway. It's just that I will only get a score for the project, but no explanation on why it was so slow and since I am simply curious on what I did wrong I would appreciate if anyone her could give me a hint or two. I will upload the code under the following link so I don't have to put it in here, since even just writing the functions which actually do compute the algorithm would still be too much for a post here. I don't want to short it down though, since I want to show you the actual code as is so you can find anything that might be slowing it down too much. I know looking through all that code is a little work, but I would really appreciate any help. Again, my problem is not correctness or how to do it, but how to do it faster, a lot faster. Thanks in advance... here's the link: http://www.wcrevival.de/joker/CSudokuRiddle_cpp.txt Tag: Q about length and complexity of expressions in MSVC6 Tag: 266713
  - 2
    - warning C4013: 'GetComputerNameEx' undefined Hello, I have a simple C program that invokes GetComputerNameEx() with '(COMPUTER_NAME_FORMAT)ComputerNameDnsFullyQualified' value as first parameter. During compilation (via cl.exe command line or as part of VC 2003 project), I consistently get compile error (see "subject line" above). That is happening despite the following definitions on my WinXP system: #ifdef WINVER #undef WINVER #endif #define APPVER 5.0 #define WINVER 0x0501 #define _WIN32_WINNT WINVER #ifndef NTDDI_VERSION #define NTDDI_VERSION NTDDI_WINXPSP2 #endif How can I compile a program that tries to use GetComputerNameEx()?!? Tag: Q about length and complexity of expressions in MSVC6 Tag: 266708
  - 3
    - CryptoAPI problem -> decrypt possible with wrong key? Hi I wrote a little program that shows my problem. What I want to do is 0) generate a pair of RSA keys (private, public). 1) encrypt some text with the public key and 2) decrypt it with the private key... now, that works fine. But then I tryed something else... I tryed to use the public key for decrypting the data (which shouldn't work, as far as I know... but currently I'm a bit confused... anyway). So I expected an error when decrypting with the public key... but... it worked... can someone explain me this? thanks MR - Rudolf Meier Here's my code: CWinApp theApp; using namespace std; #include <wincrypt.h> #pragma comment(lib, "Crypt32.lib") #include <conio.h> int _tmain(int argc, TCHAR* argv[], TCHAR* envp[]) { int nRetCode = 0; // MFC initialisieren und drucken. Bei Fehlschlag Fehlermeldung aufrufen. if (!AfxWinInit(::GetModuleHandle(NULL), NULL, ::GetCommandLine(), 0)) { // TODO: Den Fehlercode an Ihre Anforderungen anpassen. _tprintf(_T("Schwerwiegender Fehler bei der MFC-Initialisierung\n")); nRetCode = 1; } else { printf("[0] generate keys - [1] encrypt - [2] decrypt\n"); BOOL bResult; DWORD dwError; BYTE* pbBuffer = new BYTE[1024]; DWORD cbBuffer = 1024; HANDLE hFile = NULL; HCRYPTPROV hCryptProv; bResult = CryptAcquireContext(&hCryptProv, NULL, MS_ENHANCED_PROV, PROV_RSA_FULL, 0); dwError = GetLastError(); if (!bResult) printf("error\n"); switch(getch()) { case '0': { HCRYPTKEY hKey; bResult = CryptGenKey(hCryptProv, CALG_RSA_KEYX, CRYPT_EXPORTABLE | AT_KEYEXCHANGE, &hKey); dwError = GetLastError(); cbBuffer = 1024; bResult = CryptExportKey(hKey, NULL, PRIVATEKEYBLOB, 0, pbBuffer, &cbBuffer); dwError = GetLastError(); hFile = CreateFile("C:\\private_key.dat", GENERIC_WRITE, 0, NULL, CREATE_ALWAYS, FILE_ATTRIBUTE_NORMAL, NULL); WriteFile(hFile, pbBuffer, cbBuffer, &cbBuffer, NULL); CloseHandle(hFile); cbBuffer = 1024; bResult = CryptExportKey(hKey, NULL, PUBLICKEYBLOB, 0, pbBuffer, &cbBuffer); dwError = GetLastError(); hFile = CreateFile("C:\\public_key.dat", GENERIC_WRITE, 0, NULL, CREATE_ALWAYS, FILE_ATTRIBUTE_NORMAL, NULL); WriteFile(hFile, pbBuffer, cbBuffer, &cbBuffer, NULL); CloseHandle(hFile); bResult = CryptDestroyKey(hKey); dwError = GetLastError(); } break; case '1': { hFile = CreateFile("C:\\public_key.dat", GENERIC_READ, 0, NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL); ReadFile(hFile, pbBuffer, 1024, &cbBuffer, NULL); CloseHandle(hFile); HCRYPTKEY hKey; bResult = CryptImportKey(hCryptProv, pbBuffer, cbBuffer, NULL, CRYPT_EXPORTABLE | AT_KEYEXCHANGE, &hKey); dwError = GetLastError(); strcpy((char *)pbBuffer, "testtext"); cbBuffer = strlen((char *)pbBuffer) + 1; bResult = CryptEncrypt(hKey, NULL, TRUE, 0, pbBuffer, &cbBuffer, 1024); hFile = CreateFile("C:\\encrypted_data.dat", GENERIC_WRITE, 0, NULL, CREATE_ALWAYS, FILE_ATTRIBUTE_NORMAL, NULL); WriteFile(hFile, pbBuffer, cbBuffer, &cbBuffer, NULL); CloseHandle(hFile); bResult = CryptDestroyKey(hKey); dwError = GetLastError(); } break; case '2': { hFile = CreateFile("C:\\public_key.dat", GENERIC_READ, 0, NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL); // should generate an error, because I'm loading the public_key to decrypt!! should not work!! ReadFile(hFile, pbBuffer, 1024, &cbBuffer, NULL); CloseHandle(hFile); HCRYPTKEY hKey; bResult = CryptImportKey(hCryptProv, pbBuffer, cbBuffer, NULL, CRYPT_EXPORTABLE | AT_KEYEXCHANGE, &hKey); dwError = GetLastError(); hFile = CreateFile("C:\\encrypted_data.dat", GENERIC_READ, 0, NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL); ReadFile(hFile, pbBuffer, 1024, &cbBuffer, NULL); CloseHandle(hFile); bResult = CryptDecrypt(hKey, NULL, TRUE, 0, pbBuffer, &cbBuffer); bResult = (strcmp((char *)pbBuffer, "testtext") == 0); printf("%s", (bResult ? "ok" : "error")); bResult = CryptDestroyKey(hKey); dwError = GetLastError(); } break; default: printf("wrong selection\n"); break; } bResult = CryptReleaseContext(hCryptProv, 0); dwError = GetLastError(); delete[] pbBuffer; printf("\nfinished\n"); getch(); } return nRetCode; } Tag: Q about length and complexity of expressions in MSVC6 Tag: 266706
  - 4
    - tcp socket hi, Can tcp socket be a one way communication. If i am only reading from server(receive( , , , )), do i still have to write to server (send ( , , , )) after each recieve call !!!! -thiru Tag: Q about length and complexity of expressions in MSVC6 Tag: 266702
  - 5
    - ToTitleCase I am converting some code to work in windows and I came across a function called ToTitleCase(). Is there a win32 equivalent to this? I found a ToUpper & ToLower but no ToTitle. Thanks Bob Tag: Q about length and complexity of expressions in MSVC6 Tag: 266699
  - 6
    - CXX0030: Error: expression cannot be evaluated when connecting to SQL server Hi all, I try to connect to a SQL database and get a 'CXX0030: Error: expression cannot be evaluated' due to the connection->Open function. The connection string was verified and therefore should work. I have no real idea where the problem is situated... I hope someone can help me out. Thanks in advance. Stijn try { m_hr = connection.CreateInstance(__uuidof(ADODB::Connection)); connection->CursorLocation = ADODB::adUseClient; connection->Open(L"Provider=SQLOLEDB.1;Integrated Security=SSPI;Initial Catalog=testing;Data Source=.",L"", L"", ADODB::adConnectUnspecified); } catch (_com_error &e) { e.Description(); } Tag: Q about length and complexity of expressions in MSVC6 Tag: 266698
  - 7
    - pixel decimation Hi all, How to do decimation. For example, I have a line of image pixel 2500. My screen resolution is 1280 by 1024. If i want the image to be displayed without a scroll bar in the bottom, How should i print the pixels on screen. any help would be great. Thanks, -thiru Tag: Q about length and complexity of expressions in MSVC6 Tag: 266694
  - 8
    - Creating a unique path separator Hi, If i have a tree structure, where the names can have ANY character in them, what would be the best method for finding a 'unique series of characters' to use as a separator when writing a path to an XML file? For instance, the structure could look like this: !"=A3$%^&*()_+1234567890- QWERTYUIOP{}qwertyuiop[] ASDFGHJKL:@~asdfghjkl;'# |ZXCVBNM<>?\zxcvbnm,./`=AC then im stuck for using a single character (lets pretend that all the extended characters have been used aswell - it could happen ... and probably will when i least want it to), so i have to use two characters for the separator. But of course, all the two character combinations could have been used up aswell in a gargantuan super path! So i would need to use three (or more - getting more and more unlikely, i know). All good suggestees will have a planet named after them, James. Tag: Q about length and complexity of expressions in MSVC6 Tag: 266688
  - 9
    - peculiar error, res.dll missing I have migrated one project from VC++ 6.0 to .NET2003(managed C++). I have modified the required code according to the .NET libraries. It is executing fine in both Debug mode as well as release mode.The name of the project is ardtd. The problem is while running the application(not from IDE). I put the exe and all the dlls required for that application. If i click on the exe file, it is supposed to execute fine but It says ardtdres.dll not found. I'm getting this error on the systems where .NET is not installed even though .NET framework is installed. If .NET is installed on the machine I'm not getting this error. Please let me know if you have any idea about this problem, Thank you in advance Tag: Q about length and complexity of expressions in MSVC6 Tag: 266685
  - 10
    - Newbie adding COM components to a project Hi, I am an experienced java and VB6 developer and had about 2 years experience of C++ about 8 years ago (but on UNIX). I have a COM object that I have used a lot in the VB6 environment by simply adding it to the references. I am then able to refer to the objects easily and intellisense works great. I am trying to write some code in C++ but I am having problems adding the COM object to the project. I do not know where to begin. I have access to the dll and to the tlb. Is there an easy way to do this? I am currently using Visual Studio 2005 Express but may be able to get my hands on the full VS 2005 environment. Any help really appreciated. Thanks David Tag: Q about length and complexity of expressions in MSVC6 Tag: 266684
  - 11
    - red exclamation mark icon Hi, Where I can find "red exclamation mark" icon, I was looking for this in few dll's but failed? m. Tag: Q about length and complexity of expressions in MSVC6 Tag: 266681
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    - error LNK2022: metadata operation failed - using Templates? I've seen several previous posts related to LNK2022 errors using templates, but I have not seen a resolution (one other person said the error goes away if he does not make his class a template, but that's not a preferred solution for me, as it wasn't for him) . I have a template LinkedList class that I can use successfully within the .Net form.h file, but if I try to access it from within another class (only in that class, no longer in the form) it compiles fine but then I get two link errors: City.obj : error LNK2022: metadata operation failed (80131187) : Inconsistent method declarations in duplicated types (types: node; methods: .ctor): (0x06000003). City.obj : error LNK2022: metadata operation failed (801311D6) : Differing number of methods in duplicated types (node): (0x02000004). I've commented out most of the lines of code so I know that this error occurs when I include a method call from with the City object to the linked list method insertAtHead. The linkedlist class (reduced for this example) is: #pragma once template <typename Item> ref class LinkedList { private: ref class node { public: node() { data = Item(); link=nullptr; } node(const Item% init_data, node ^init_link) { data = init_data; link = init_link; } Item data; node ^link; }; public: typedef node ^NodePtr; LinkedList(void); void insertAtHead(const value_type% entry); private: NodePtr head; }; and in the cpp file: template <typename Item> LinkedList<Item>::LinkedList(void) { head = nullptr; } template <typename Item> void LinkedList<Item>::insertAtHead(const Item% entry) { head = gcnew node(entry, head); } In the City class, I have: #pragma once #include "LinkedList.cpp" ref class City { public: City(System::String^ cityName); void addDest(City^ dest); private: System::String^ name; LinkedList<City^> destList; }; and in the City.cpp file: void City::addDest(City^ dest) { destList.insertAtHead(dest); } If I comment out destList.insertAtHead(dest); I no longer get the linker errors. As stated above, the LinkedList files (unmodified) work if I put the declaration of the linked list and calls to insertAtHead in my Form1.h file. Why should it make a difference if they are in my City class instead? Any suggestions would be greatly appreciated! cyndi Tag: Q about length and complexity of expressions in MSVC6 Tag: 266678
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    - dllregisterserver not registering com classes I have a COM DLL (created with the ATL COM wizard). It comes with the function: // DllRegisterServer - Adds entries to the system registry STDAPI DllRegisterServer(void) { // registers object, typelib and all interfaces in typelib HRESULT hr = _AtlModule.DllRegisterServer(); return hr; } This function does get called when the object is registered, but none of the interfaces I have defined get registered. Do I need to put code in to manually register my objects? What does that function register, then? Thanks, -PaulH Tag: Q about length and complexity of expressions in MSVC6 Tag: 266671
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    - Making Type Library for normal Windows DLL (not a COM server) I read this artical and tried to create tlb for my C++ class. import "oaidl.idl"; import "ocidl.idl"; [ uuid(634FE8B5-C847-4b25-B135-B39312741EDE) ] library Vdll_1Lib { importlib("stdole2.tlb"); [ dllname("Vdll_1.dll") ] module Vdll_1Mod { //[entry(1)] void Calculate_1(void); [ entry("Calculate_1") ] void Calculate_1 (void); } }; ---------- LIBRARY "Vdll_1.dll" EXPORTS Calculate_1 ------ #import "C:\Test\Vdll_1\Debug\Vdll_1.tlb" I am getting linking problems . ClientClass.obj : error LNK2019: unresolved external symbol "void __stdcall Vdll_1Lib::Calculate_1(void)" (?Calculate_1@Vdll_1Lib@@YGXXZ) referenced in function "public: virtual long __stdcall CClientClass::Add(wchar_t *)" (?Add@CClientClass@@UAGJPA_W@Z) Debug\ClientVdll.dll : fatal error LNK1120: 1 unresolved externals. Any suggestions for this issue? thanks abhi Tag: Q about length and complexity of expressions in MSVC6 Tag: 266662
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    - VC++ vs. FoxPro I've generated a DLL with Visual FoxPro 9.0 and, on the other side, I've go a VC++ project wich uses DLL methods. I Copy the TLB file into VC++ project folder and the I rebuild EXE. If I create the DLL in VFP 6.0 it works ok, but if I do in VFP 9.0, when I build EXE, it says 'Function does not take <n> parameters'. I call DLL functions in this way: vResult = Iobj->mymethod(vparam, vparam, ...); Tag: Q about length and complexity of expressions in MSVC6 Tag: 266659
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    - Urge for help in a game programming Four Win Description To program the play named "four win", the background board should consist of a lattice with 7 columns, into which in each case 6 stones fit. The playing field stands perpendicularly, so that a stone falls always widen-possible downward. The rules are : 1=2E The goal of the Game is to place four stones in a row or column wise or diagonally as a first player. 2=2E Each player receives 21 stones of his colour (pink/green). 3=2E The green player begins. 4=2E The player lets a stone fall alternating into a row. 5=2E If no more places are in a row, then this may not be selected. 6=2E Winner will be the player, who can accommodate first four stones in a continuous manner (horizontally, vertically, diagonally). 7=2E If the backboard is full and there is no certain winner, then the play ends undecided. For a better understanding go to: http://www.kielack.de/games/fourwins.htm The program is to cover the following capability characteristics: =B7 Play between two human players. =B7 Play between a human and a computer player. =B7 Play between two computer players. =B7 Each player is to extend the abstract class ,,Player ", which is available on the practical course web pages for the Download. References =B7 One can make Screenshots simply by pressing the key at the same time ,,pressure/print screen "and/or <Alt> and ,,pressure/print screen "(the screen and/or the active window copies as diagram into the intermediate file, so that these can be inserted in Word over Edit->Past as picture directly). =B7 The aim for this program is to show as simple text edition as shown in the example TicTacToe (see C++ program simpleTicTacToe.cpp). =B7 In the simplest case the computer player can make coincidental courses (see C++ program zufallszahlen.cpp (RandomNumbers). A more intelligent strategy for the computer player can be programmed according to the mini max algorithm (e.g. see. http://de.wikipedia.org/wiki/ http://en.wikipedia.org/wiki/Minimax_algorithm). An improved variant for this algorithm is the alpha beta search (e.g. see http://en.wikipedia.org/wiki/Alpha-Beta). Tag: Q about length and complexity of expressions in MSVC6 Tag: 266656
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    - Packet split Hi all, I have a problem recieving data from a host machine. I m usiing socket programing. I formed a packet on host machine. When i run the application on the local machine (both server and client) I reiceve all data and packets. When i run the server on a remote machine i recieve less size data than expected once a while. I should recieve a packet size of 1118. sometime i recieve two packets with the size of 342 and 746. I dont figure it out why i recieve like this. Any help would be great. Thanks, thiru Tag: Q about length and complexity of expressions in MSVC6 Tag: 266654
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    - Linker Warning Hi !!! I am using Microsoft Visual C++ 8.0 compiler. I have precompiled headers file "precomp.h" and "precomp.cpp". When I compile I have always this warning "precomp.cpp: no public symbols found, archive members will be inaccessible". I know that by other empty files is it OK, but by precompiled headers file it is OK that I have empty source file. What should I do, if I want to switch off the warning? Thanks. Tag: Q about length and complexity of expressions in MSVC6 Tag: 266652
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    - PeekNamedPipe not working! I am using PeekNamedPipe on anonymous pipes. It always returns 0 in lpBytesRead, lpTotalBytesAvail and lpBytesLeftThisMessage even if data is written in pipe. I want to check if data is available to read, before making a ReadFile call, so that it does not blocks. Is there some other way? Tag: Q about length and complexity of expressions in MSVC6 Tag: 266644
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    - How can i run an .exe on vista which i have designed on win2k3 Hi, I have developed a VC++ program on win2k3 environment. When i am running it on Vista then it is giving an error. "Side by side configuration is not proper" What it means? Thanks inadvance for suggestion. --Durgesh Tag: Q about length and complexity of expressions in MSVC6 Tag: 266640
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    - non admin FlushFileBuffers for a volume Hi All, In our software we need to flush all the data on a removable device(disk on key). The problem is that when user is non admin we can't obtain handle to the volume using CreateFile cause of the insufficient privileges. I'm looking for a work around to cause file/cache manager to flush all the data. Btw eject is not an option for us as after flushing we are doing some operation via disk on keys firmware that cause it to show "private" folders, if we do this without flush the data is lost on Win2k machines where Performance check box is by default turned on on disk on keys. Thanks in advance Tag: Q about length and complexity of expressions in MSVC6 Tag: 266638
  - 22
    - Write text to, split, join, and page count tiffs Ok, this has been asked over and over again....but i have to ask because there has to be a better way (without spending $$). First things first, I'm running many (thousands of) tif images through an application I have been building. So far, i have used the Image.GetFrameCount to get page counts and write strings on images, split, and join using the graphics object. For anyone that has used either of these, it is incredibly slow especially compared to some of these 3rd party libraries that you can purchase for hundreds to thousands of dollars....seems kind of pointless to spend more than $10 on what i need to use them for. I have used FreeImage from SourceForge, and, compared to namely LeadTools, it is STILL slower for getting page counts and I cant even do any drawing using the library. What I am looking for is either a library or an example of how I can perform these actions with speed as a must. I am primarily a C# developer but can delve a little in C++. I am willing to do a little C++ code, so if that helps with a solution please dont let that be a limit. ANY help in any of these areas is much more appreciated than you can imagine. Thank you in advance! Tag: Q about length and complexity of expressions in MSVC6 Tag: 266635
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    - Question about hooking Hi, I'm trying to hook another application's window to check for WM_MOVE messages. Does anyone know of any examples (that arent for keyboard and mouse hooks)? I suppose i want to do the same as SPY++, just for fewer messages! Thankyou in expectation, James Tag: Q about length and complexity of expressions in MSVC6 Tag: 266628
  - 24
    - Convert TCHAR to integer! Hello, As I now know that const or not, either way the parameter is accepted in the _ttoi() function. On that note... Please consider the following code: =================================================== case WM_COMMAND: if ((LOWORD(wParam) >= extnl_INT_INPUT_MVars[0].CW2_CV_ID) && (LOWORD(wParam) <= extnl_INT_INPUT_MVars[3].CW2_CV_ID) ) //Fetch function! UpDateSimExtrnlInputs_INT(wParam, lParam, &io, HWND_CW2_extnl_INT_INPUT_CV); ...other code .... ================================================== ===============================UpDateSimExtrnlInputs_INT() void UpDateSimExtrnlInputs_INT(WPARAM wParam, LPARAM lParam, IO *io, HWND HWND_CW2_extnl_INT_INPUT_CV[]) { int k; //TCHAR szBufferINPUT[] = _T("12345"); Tried it ! Gives error! TCHAR szBufferINPUT[10]; //Declare 10 character array SendMessage( (HWND) lParam, WM_GETTEXT, 5, (LPARAM)szBufferINPUT ); //Get the text in the control //The next line should convert the string buffer to an integer k = _ttoi(szBufferINPUT); //This line gives the error! } ===================================================== Here is the error that I get: c:\_DTS_PROGRAMMING\C_PROGRAMMING\vc++\MY_APPS_LAB\XPPLC\WndProc_CW2.cpp(780): error C3861: '_ttoi': identifier not found, even with argument-dependent lookup I have re-posted this question, and the fellows that answered the previous post are very welcome to continue with it and I will more that willingly work on all your feedback. I find the previous post had too many topics and I was getting confused that's all! :) I don't disagree with you Brian, hence, yes, gosh, Yes we are in trouble! I know that the TEXT macro is defined in a few ways like as: #define _T(x) __T(x) and so that's where David got the following line: TCHAR szBufferINPUT[] = _T("12345"); But I get an error on this... c:\_DTS_PROGRAMMING\C_PROGRAMMING\vc++\MY_APPS_LAB\XPPLC\WndProc_CW2.cpp(768): error C3861: '_T': identifier not found, even with argument-dependent lookup But you see that SendMessage() will get different text from different controls. So: TCHAR szBufferINPUT[] = _T("12345"); can't be so. The buffer has to be filled in with a new values everytime. And I did try it if you look at the above code! Anyways I still would appreciate some help on this topic! Thankyou news groups! -- Best regards Robert -- Best regards Robert Tag: Q about length and complexity of expressions in MSVC6 Tag: 266627
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    - Convert TCHAR to const char? Hello, I have the following sendMessage that returns text and is stored in a string of TCHAR type. ============================================== TCHAR szBufferINPUT[10]; SendMessage( (HWND) lParam, WM_GETTEXT, 5, (LPARAM)szBufferINPUT ); ============================================== Now, I need to convert this text string to an integer type.... So I fugure to go with the atoi function! But the atoi takes in a const char! I looked in many books for explanations on conversions from TCHAR to const char.... ya right! Haven't found one! So I searched the WIndows help and came up with this: "Remarks These functions convert a character string to a double-precision, floating-point value (atof and _wtof), an integer value (atoi, _atoi64, _wtoi and _wtoi64), or a long integer value (atol and _wtol). " So I guess my choice would be atoi or _wtoi right? in either case I getthe following errors respectively: c:\_DTS_PROGRAMMING\C_PROGRAMMING\vc++\MY_APPS_LAB\XPPLC\WndProc_CW2.cpp(773): error C2664: '_wtoi' : cannot convert parameter 1 from 'TCHAR' to 'const wchar_t *' c:\_DTS_PROGRAMMING\C_PROGRAMMING\vc++\MY_APPS_LAB\XPPLC\WndProc_CW2.cpp(773): error C2664: 'atoi' : cannot convert parameter 1 from 'TCHAR' to 'const char *' Can anyone show me what I need to do for this to work along with a breif explaination so I can get one step closer to fully understand data types and their conversions! A little discouraged although axious to learn! All suggestions appreciated! -- Kind regards Robert Tag: Q about length and complexity of expressions in MSVC6 Tag: 266613

Does somebody know what is the maximal length of a code line in VC6?

And what is the maximal length of an expression (using line breaks)?

I mean: in characters ...

TIA
Axel
--
"please use mail at ... instead of test3 at ... to send me a mail"

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