Question about accepting strings of European format

Visual C++ Language

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  - 1
    - VS2005 Implement an existing IDL Hi, I was given an IDL file and was asked to implement it. How can I create a Project with VS2005, load the IDL somehow and let VS2005 generate the classes with empty methods. After that I just have to implement each method. That should actually be possible, because all the information about the classes already exists in the IDL-file, right Can somebody help me or give me a hint Thanks, Vedran Tag: Visual C++ Language Question about accepting strings of European format Visual C++
  - 2
    - Returning dynamically created object; Just as I was about to pat myself on the back for finally understaning pointers, I encountered this problems that reminded me once again of my ignorance. So, consider the operator overload below. Code Snippet MatrixType MatrixType::operator +(MatrixType &rightMatrix) { MatrixType* _result; int _cols = this->getCols(); int _rows = this->getRows(); if ((rightMatrix.getCols() != _cols) || (rightMatrix.getRows() != _rows)) { throw ("Cannot add matrices of different sizes"); } _result = new MatrixType(_cols, _rows); // Code here that fills _result with elements // I have verified that _result does indeed get // correctly filled. return *_result; } Now consider how I use it. When I call *_matrix3 = *_matrix1 + *_matrix2 (below), the code compiles and runs OK but _matrix3 ends up with undefined elements. Its size is OK, but the elemets are not what was returned from the operator overload+ method. I've tried some variations on this, using *, not using *, but I get compile errors. I'm at a loss of how to set this up. Any ideas Code Snippet void MatrixTester::BeginTest() { MatrixType* _matrix1; MatrixType* _matrix2; MatrixType* _matrix3; // Some code here to fill _matrix1 and _matrix2 _matrix3 = new MatrixType(_matrix1->getCols(), _matrix1->getRows()); *_matrix3 = *_matrix2 + *_matrix1; } Thanks, Tag: Visual C++ Language Question about accepting strings of European format Visual C++
  - 3
    - easy win32 :) i get this error: Error 1 error C2664: 'CreateWindowExW' : cannot convert parameter 2 from 'const char [7]' to 'LPCWSTR' c:\hfscontrol\hfscontrol\hfscontrol.cpp 80 when using this code: // Create Button hwndButton = CreateWindowEx(0, "BUTTON" , "&ClickMe" ,WS_VISIBLE|WS_CHILD|BS_PUSHBUTTON,20,20,100,50,hWnd,NULL,hInstance,NULL); could anyone let me know what is wrong this is a plain win32 project created in VS2005. thanks in advance, Daniel Tag: Visual C++ Language Question about accepting strings of European format Visual C++
  - 4
    - Breakpoint Problem in VS71 & VS80 I am unable to hit breakpoints in both VS71 & VS80 (C++ Native). I originally had only VS71 installed on my PC and one day suddenly I was unable to hit any BPs. I dont remember what I did specifically to might have caused this behavior. I think I installed the .NET framework 3.0 around that time (uninstalling it hasn't had any effect). I then installed VS80 and the problem continued. I have made sure of the following basic things that most people keep telling: -- Building and running in debug mode -- I am generating DEBUG info -- Symbols are being loaded (seen in the modules and output window) and the dll and symbols both have the same time stamp (in both VS71 & VS80) -- No optimizations in debug mode -- BP is placed at a point where it is definitely being executed. In VS71 - the BP glyph is a question mark and the message I get is "No executable code loaded at this location". In VS80 - the BP is a hollow circle with an exclamation mark and message I get is "The breakpoint will not currently hit. Unable to set breakpoint." Debugger breaks when exceptions are thrown, breaks when I use _DebugBreak() function. I tried repairing VS71 but was of no help. I have tried almost every relevant solution that I could find on the web and have not been able to resolve the problem. Could someone please provide me with a solution to this problem. Thank you. Tag: Visual C++ Language Question about accepting strings of European format Visual C++
  - 5
    - problem having vc7.1 and vc 8.0 express on same machine hi, i have installed vc 8.0 express + platform sdk on my machine where i had already a working vc 7.1 C++ standard installation. btw: i work only with C++. vc 8.0 worked fine after installation, but vc 7.1 studio has now a problem with linking. i get always a fatal error in following form: ... fatal error LNK1173: unable to find entrypoint 'DllGetObjHandler' in E:\Programme\Microsoft Visual Studio .NET 2003\Vc7\bin\c2.dll i have deinstalled vc8.0 and vc7.1 and installed vc7.1 again, but it did not help. the problem remains. on internet i could not find any useful information how to fix this problem. please help as i don't want to have to reinstall the entire windows system :-( btw: i cannot understand that these both versions are not able to coexistense on same machine. if this a known problem, it would be fine to denote this on vc8.0 installation! cheers boto Tag: Visual C++ Language Question about accepting strings of European format Visual C++
  - 6
    - Trouble with bitmaps Ok, it took me forever to piece this code together and have it almost work but now I've run into a problem I can't figure out. I am trying to take a snapshot of the desktop and then save it to a file called "test.bmp". Everything works fine and I get the file to be saved but when I open it with notepad, it shows the normal BMP header but all of the bits are just spaces. If I open the file in ms paint its just a black background. If you can provide any help it would be greatly appreciated. I think the problem is when I use BitBlt to get the screenshot. How do I extract the image from the hdcCompatible The code: Code Block #include <windows.h> #include <gdiplus.h> #include <fstream> #include <iostream> #pragma comment ( lib , "gdiplus.lib" ) using namespace std; PBITMAPINFO CreateBitmapInfoStruct(HWND hwnd, HBITMAP hBmp); void CreateBMPFile(HWND hwnd, LPTSTR pszFile, PBITMAPINFO pbi, HBITMAP hBMP, HDC hDC); int CaptureScreen(HWND hWindow, int hideWindow) { HDC hdcScreen = CreateDCA( "DISPLAY" , NULL, NULL, NULL); HDC hdcCompatible = CreateCompatibleDC(hdcScreen); HBITMAP hbmScreen = CreateCompatibleBitmap(hdcCompatible, GetDeviceCaps(hdcScreen, HORZRES), GetDeviceCaps(hdcScreen, VERTRES)); if (hbmScreen == 0) { return 0; } if (!SelectObject(hdcCompatible, hbmScreen)) { return 0; } if (hideWindow == true ) { ShowWindow(hWindow, SW_HIDE); } if (!BitBlt(hdcCompatible, 0, 0, GetDeviceCaps(hdcScreen, HORZRES), GetDeviceCaps(hdcScreen, VERTRES), hdcScreen, 0, 0, SRCCOPY)) { return 0; } if (hideWindow == true ) { ShowWindow(hWindow, SW_SHOW); } PBITMAPINFO bmpInfo = CreateBitmapInfoStruct(hWindow, hbmScreen); CreateBMPFile(hWindow, L "test.bmp" , bmpInfo, hbmScreen, hdcScreen); } PBITMAPINFO CreateBitmapInfoStruct(HWND hwnd, HBITMAP hBmp) { BITMAP bmp; PBITMAPINFO pbmi; WORD cClrBits; // Retrieve the bitmap color format, width, and height. if (!GetObject(hBmp, sizeof (BITMAP), (LPSTR)&bmp)) return 0; // Convert the color format to a count of bits. cClrBits = (WORD)(bmp.bmPlanes * bmp.bmBitsPixel); if (cClrBits == 1) cClrBits = 1; else if (cClrBits <= 4) cClrBits = 4; else if (cClrBits <= 8) cClrBits = 8; else if (cClrBits <= 16) cClrBits = 16; else if (cClrBits <= 24) cClrBits = 24; else cClrBits = 32; // Allocate memory for the BITMAPINFO structure. (This structure // contains a BITMAPINFOHEADER structure and an array of RGBQUAD // data structures.) if (cClrBits != 24) pbmi = (PBITMAPINFO) LocalAlloc(LPTR, sizeof (BITMAPINFOHEADER) + sizeof (RGBQUAD) * (1<< cClrBits)); // There is no RGBQUAD array for the 24-bit-per-pixel format. else pbmi = (PBITMAPINFO) LocalAlloc(LPTR, sizeof (BITMAPINFOHEADER)); // Initialize the fields in the BITMAPINFO structure. pbmi->bmiHeader.biSize = sizeof (BITMAPINFOHEADER); pbmi->bmiHeader.biWidth = bmp.bmWidth; pbmi->bmiHeader.biHeight = bmp.bmHeight; pbmi->bmiHeader.biPlanes = bmp.bmPlanes; pbmi->bmiHeader.biBitCount = bmp.bmBitsPixel; if (cClrBits < 24) pbmi->bmiHeader.biClrUsed = (1<<cClrBits); // If the bitmap is not compressed, set the BI_RGB flag. pbmi->bmiHeader.biCompression = BI_RGB; // Compute the number of bytes in the array of color // indices and store the result in biSizeImage. // For Windows NT, the width must be DWORD aligned unless // the bitmap is RLE compressed. This example shows this. // For Windows 95/98/Me, the width must be WORD aligned unless the // bitmap is RLE compressed. pbmi->bmiHeader.biSizeImage = ((pbmi->bmiHeader.biWidth * cClrBits +31) & ~31) /8 * pbmi->bmiHeader.biHeight; // Set biClrImportant to 0, indicating that all of the // device colors are important. pbmi->bmiHeader.biClrImportant = 0; return pbmi; } void CreateBMPFile(HWND hwnd, LPTSTR pszFile, PBITMAPINFO pbi, HBITMAP hBMP, HDC hDC) { HANDLE hf; // file handle BITMAPFILEHEADER hdr; // bitmap file-header PBITMAPINFOHEADER pbih; // bitmap info-header LPBYTE lpBits; // memory pointer DWORD dwTotal; // total count of bytes DWORD cb; // incremental count of bytes BYTE *hp; // byte pointer DWORD dwTmp; pbih = (PBITMAPINFOHEADER) pbi; lpBits = (LPBYTE) GlobalAlloc(GMEM_FIXED, pbih->biSizeImage); if (!lpBits) return ; // Retrieve the color table (RGBQUAD array) and the bits // (array of palette indices) from the DIB. if (!GetDIBits(hDC, hBMP, 0, (WORD) pbih->biHeight, lpBits, pbi, DIB_RGB_COLORS)) { return ; } // Create the .BMP file. hf = CreateFile(pszFile, GENERIC_READ | GENERIC_WRITE, (DWORD) 0, NULL, CREATE_ALWAYS, FILE_ATTRIBUTE_NORMAL, (HANDLE) NULL); if (hf == INVALID_HANDLE_VALUE) return ; hdr.bfType = 0x4d42; // 0x42 = "B" 0x4d = "M" // Compute the size of the entire file. hdr.bfSize = (DWORD) ( sizeof (BITMAPFILEHEADER) + pbih->biSize + pbih->biClrUsed * sizeof (RGBQUAD) + pbih->biSizeImage); hdr.bfReserved1 = 0; hdr.bfReserved2 = 0; // Compute the offset to the array of color indices. hdr.bfOffBits = (DWORD) sizeof (BITMAPFILEHEADER) + pbih->biSize + pbih->biClrUsed * sizeof (RGBQUAD); // Copy the BITMAPFILEHEADER into the .BMP file. if (!WriteFile(hf, (LPVOID) &hdr, sizeof (BITMAPFILEHEADER), (LPDWORD) &dwTmp, NULL)) { return ; } // Copy the BITMAPINFOHEADER and RGBQUAD array into the file. if (!WriteFile(hf, (LPVOID) pbih, sizeof (BITMAPINFOHEADER) + pbih->biClrUsed * sizeof (RGBQUAD), (LPDWORD) &dwTmp, ( NULL))) return ; // Copy the array of color indices into the .BMP file. dwTotal = cb = pbih->biSizeImage; hp = lpBits; if (!WriteFile(hf, (LPSTR) hp, ( int ) cb, (LPDWORD) &dwTmp,NULL)) return ; // Close the .BMP file. if (!CloseHandle(hf)) return ; // Free memory. GlobalFree((HGLOBAL)lpBits); } Tag: Visual C++ Language Question about accepting strings of European format Visual C++
  - 7
    - Problem in Image Retrieving Hi, I am retrieving the image from DLL through vc++ dll. Actually Image is retrieving in Callback function of main function. When I writing that image file inside of the Callback function then no problem in retrieving. At the same I want to send the Imagedata to the another function and write the same which cause the error. Here I given that code, //Callback function prResponse prSTDCALL MyGetFileDataFunction( prHandle CameraHandle, prObjectHandle ObjectHandle, prContext Context, prProgress* pProgress ) { static ofstream out("capture.jpg", ios: ut|ios::binary); switch ( pProgress->lMessage ) { prUInt8 imgbuffer[1024]; case prMSG_DATA_HEADER: break ; case prMSG_DATA: for (prUInt32 index = 0; index < pProgress->lLength; index++) { imgbuffer[index] = pProgress->pbData[index]; } PowershotDll: owershotSdkDll::Copy(imgbuffer,pProgress->lLength); //Calling another function and send the data memcpy(CaptureImage,imgbuffer,1024L); out.write(( const char *)CaptureImage,1024L); break ; case prMSG_TERMINATION: out.close(); break ; } return prOK; } Copy function: void PowershotSdkDll::Copy(prUInt8 *pDataBuffer, prUInt32 dataLength) { // Byte managedDataBuffer __gc[] = new System::Byte[dataLength]; BYTE managedDataBuffer[1024]; for (prUInt32 index = 0; index < dataLength; index++) { managedDataBuffer[index] = pDataBuffer[index]; } /// Write the data to the memoryStream //pMemoryStream->Write(managedDataBuffer, 0, dataLength); static ofstream out1("Copycapture.jpg", ios: ut|ios::binary|ios::app); out1.write(( const char *)managedDataBuffer, 1024L); out1.close(); } I got the image capture.jpg but i didnt get the copycapture.jpg image which contain only 1024 bytes. Pleae give your suggestion. Tag: Visual C++ Language Question about accepting strings of European format Visual C++
  - 8
    - mouseclick event on form underlying object hi, i have a picturebox sitting on a form when the picturebox is clicked with the mouse, it of course raises the mouseclick event on the picturebox is there any way to ignore the picturebox so that a mouseclick event is raised on the underlying form (as if the picturebox was transparent) thanks Tag: Visual C++ Language Question about accepting strings of European format Visual C++
  - 9
    - Command line compiler help needed!!!! I'm trying to compile the below code with the command line compiler but I get a bunch of errors Errors like 'System' is not a class or namespace name Can the command line compiler be used on this type of code #include <stdio.h> #include <stdlib.h> using namespace System::IO; using namespace System::Text::RegularExpressions; void main (void) { int index = 0; String ^line; Regex^ rx = gcnew Regex(",") StreamReader^ sr = gcnew StreamReader(testfile.tif); while ( line = sr->ReadLine() ) { array<int>^ ia = rx->Split(line); } int a=array[index++]; int b=array[index++]; int c=array[index++]; if (a <= 42) { b--; if (c > 1444) c--; } else if (a > 42) { do { a += b; } while (b <= 1000); } return; } Tag: Visual C++ Language Question about accepting strings of European format Visual C++
  - 10
    - Decorations on C++ DLL function declarations really needed? I used the _stdcall decorators on the Visual C++ function definitions and declarations, but I couldn't get communication between the DLL and the Visual Basic application that was trying to call the functions of the DLL.. When I removed the declarations from the VC code almost completely (all but for the DLL_Main function definition), it worked fine. Is there any disadvantage to using this approach Everyone I communicated with about it , including my boss and people that answered the MIcrosoft help posting that I put up, stated that you have to use those decorations. Why is that It works fine without it so far. My boss will be back from travel tommorrow. I was hoping to find out today so I can make changes if necessary. Thanks. George Tag: Visual C++ Language Question about accepting strings of European format Visual C++
  - 11
    - CListCtrl - ReportView - Selecting a row I have a CListCtrl and I want a particular row selected, this this example row 4. int row = 3; SetItemState(row, LVIS_SELECTED, LVIS_SELECTED); This does select the row and treats it as selected, BUT it does not look selected (it is not highlighted in the view). How do I highlight a particular row so that it looks selected Tag: Visual C++ Language Question about accepting strings of European format Visual C++
  - 12
    - Drawing text with different fonts on multiple lines without breaking the lines Hi, I want to draw multiple strings with different fonts on multiple lines without breaking the lines. The output should look like a continuous line with different fonts. For ex: I want to draw a text string such as the below one and my window is having a size such that the text is diaplayed as shown below. " Only two things are infinite, the universe and human stupidity, and I'm not sure about the former. - Albert Einstein " Now I want to display the above string as follows with new fonts so that the end user observes the message to be continuous. " Only two things are infinite, the universe and human stupidity, and I'm not sure about the former. - Albert Einstein " Currently I have splitted the whole string into a number of substrings depending upon the required number of fonts. Then I use DrawText() to draw the strings. After drawing a string I am using GetTextExtentPoint32() to find out the SIZE of the drawn text to decide my indent for drawing the next string. While I try to do so, I get an output as below. After this the remaining text is also drawn in a jumbled fashion. " Only two things are infinite, the universe and human stupidity, Please someone help me in drawing the text with different fonts on multiple lines using VC++, Windows programming. Thanks, Bala Tag: Visual C++ Language Question about accepting strings of European format Visual C++
  - 13
    - SHFileOperation returns 1026 I am using the following code to copy files but i am unable to do so. The value function SHFileOperation retuns is 1026 char SrcPath[_MAX_PATH]; char DestPath[_MAX_PATH]; CString srcFile;//'('\0',80); CString destFile ;//('\0',80); srcFile.Format("%s%s\\0",SEARCH_DIR,FileName); destFile.Format("%s%s\\0",REPLACE_DIR,FileName); strcpy(SrcPath,srcFile); //strcat(SrcPath,"\0"); strcpy(DestPath,destFile); //strcat(DestPath, "\0"); SHFILEOPSTRUCT shFileOperate; shFileOperate.lpszProgressTitle = "Copy"; shFileOperate.wFunc = FO_COPY; shFileOperate.fFlags = FOF_NOCONFIRMATION | FOF_NOCONFIRMMKDIR | FOF_SIMPLEPROGRESS; shFileOperate.pFrom = SrcPath; shFileOperate.pTo = DestPath; shFileOperate.fAnyOperationsAborted = FALSE; int ret = SHFileOperation(&shFileOperate); if(ret == 0) { AfxMessageBox("Fine"); } else { AfxMessageBox("Error"); } Please help me out Tag: Visual C++ Language Question about accepting strings of European format Visual C++
  - 14
    - Preventing dependent projects from being built I'm not sure if this is the correct forum for this question. If it isn't, please let me know what forum I should post to. I have an unmanaged C++ application. I have ProjA => unmanaged c++ app (100s unmanaged .cpp files, 1 maanged cpp file) ProjB => c# ProjA depends on ProjB. The C++ project calls C# classes from the C# project. It all builds and runs just fine. The problem is that ProjB is always built whenever I build ProjA. So then the managed .cpp file in the C++ project then needs to relink - which is really really annoying. In this case, it's an additional 7-8 seconds just for this one file. Is there anyway to prevent the C# project (ProjB) from recompiling each time I compile ProjA thanks Tag: Visual C++ Language Question about accepting strings of European format Visual C++
  - 15
    - error LNK2019: unresolved external symbol - when trying to sort an std::deque Hi! I'm migrating code from Visual Studio 2003 to Visual Studio 2005 and have run into problems with a rather simple piece of code that compiles and links fine in 2003 but fails to link in 2005. Basically, I have a deque class that contains pointers to objects of a simple class. I defined a sorting predicate function and try to sort the queue. Here's the essence of what I'm trying to do - I've stripped the code down to bare bones: Code Block class TestDeque { }; static bool ComparisonFunction( const TestDeque *e1, const TestDeque *e2) { return true ; } std::deque<TestDeque *> MyQueue; std::sort(MyQueue.begin(), MyQueue.end(), ComparisonFunction); This results with the following link error: PMAN_ServicePool.obj : error LNK2019: unresolved external symbol "bool __cdecl o perator<<class std::_Deque_iterator<class TestDeque *,class std::allocator<class TestDeque *>,0> >(class std::_Deque_iterator<class TestDeque *,class std::alloc ator<class TestDeque *>,0> const &,class std::_Deque_iterator<class TestDeque *, class std::allocator<class TestDeque *>,0> const &)" ( $ MV $_Deque_iterator@PA VTestDeque@@V $allocator@PAVTestDeque@@@std@@$0A@@std@@@@YA_NABV $_Deque_iterato r@PAVTestDeque@@V $allocator@PAVTestDeque@@@std@@$0A@@std@@0@Z ) referenced in fu nction "struct std: air<class std::_Deque_iterator<class TestDeque *,class std: :allocator<class TestDeque *>,0>,class std::_Deque_iterator<class TestDeque *,cl *** std::allocator<class TestDeque *>,0> > __cdecl std::_Unguarded_partition<cla ss std::_Deque_iterator<class TestDeque *,class std::allocator<class TestDeque * >,0>,bool (__cdecl*)(class TestDeque const *,class TestDeque const *)>(class std ::_Deque_iterator<class TestDeque *,class std::allocator<class TestDeque *>,0>,c lass std::_Deque_iterator<class TestDeque *,class std::allocator<class TestDeque *>,0>,bool (__cdecl*)(class TestDeque const *,class TestDeque const *))" ( $_U nguarded_partition@V $_Deque_iterator@PAVTestDeque@@V $allocator@PAVTestDeque @@@ std@@$0A@@std@@P6A_NPBVTestDeque@@0@Z@std@@YA AU $pair@V $_Deque_iterator@PAVTes tDeque@@V $allocator@PAVTestDeque@@@std@@$0A@@std@@V12@@0@V $_Deque_iterator@PAV TestDeque@@V $allocator@PAVTestDeque@@@std@@$0A@@0@0P6A_NPBVTestDeque@@1@Z@Z ) If I change MyQueue to be Code Block std::deque<TestDeque> MyQueue; everything's fine. The code above seems perfectly valid to me. What am I missing here Can anyone help This is quite easy to reproduce. Thanks! Tag: Visual C++ Language Question about accepting strings of European format Visual C++
  - 16
    - What causes this access violation? I get "Unhandled exception at 0x00410f49 in aTest.exe: 0xC0000005: Access violation writing location 0x0000001c." when trying to execute the following block of code. Code Snippet void CParrallelPort::SetReadySignalHigh(bool signalVal) { m_ReadySignal = signalVal; } m_ReadySignal is also of type bool. Any ideas on how to fix this Thanks Tag: Visual C++ Language Question about accepting strings of European format Visual C++
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    - Visual C++ 2005 I am trying to Build a file.cpp and I get the following: "error spawning 'cmd.exe' What is going on, please help me Pablo Estrella Tag: Visual C++ Language Question about accepting strings of European format Visual C++
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    - Memory leak HI ALL, I got an error as follow when i am executing the code; Debug Assertion failed Program: my.exe File: dbgheap.c Line: 1011 Expression: _CrtIsValidHelpPointer(pUserData) Even after i freed the memory allocated. How to avoid this problem Regards, Saravana Muthu.G Tag: Visual C++ Language Question about accepting strings of European format Visual C++
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    - [vc++] problem with afxdb.h I'm using visual c ++ express. I'm trying to connect to a database I configured with sql serveur express. I'm using CDatabase and CRecordSet function so I belive I need #include <afxdb.h>, but when I compile I get an error saying that there is no such file or directory. Can any one help Tag: Visual C++ Language Question about accepting strings of European format Visual C++
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    - problem with a .exe hi, well I have a program .exe done with visual c++, the problem : this only run when I setup the visual studio 2005 , I need that this program be independent . thanks! Tag: Visual C++ Language Question about accepting strings of European format Visual C++
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    - Are Interlocked and Barrier Intrinsics Implemented Incorrectly on VC8? Before I go into my huge rant, is there a way to prevent the compiler from reordering statements that will work for VC8 as well as older versions of VC I want to be very clear that I am looking strictly for compiler barriers and not memory barriers for the time being, since generating the appropriate memory barriers is easy enough to do in __asm blocks. Anyway, as the title suggests, in VC8 standard I am pretty sure that I am seeing very incorrect output when compared to functionality that is described on MSDN. First, the documentation on MSDN about _ReadBarrier and similar intrinsics actually contradicts itself ! Here http://msdn2.microsoft.com/en-us/library/z055s48f(VS.80).aspx it is claimed that _ReadBarrier is a memory barrier, whereas here http://msdn2.microsoft.com/en-us/library/ms684208.aspx (in the remarks section of that page) it is described as being a compiler barrier and nothing more. As well, if you look at the code snippet from the second page linked, which supposedly shows a full memory barrier for x86, apparently does nothing of the sort. An xchg does not guarantee any fence what-so-ever, at least as far as I can see from x86 instruction listings. It is strictly an unordered atomic operation. In order to portably and reliably create any type of fence, I'm fairly certain that you would need to use sfence, lfence, or mfence, which are SSE and SSE2 instructions. After looking at the output generated by the supposed interlocked operation intrinsics such as InterlockedCompareExchange, which claim full fence semantics, it seems as though the appropriate fences are not in place, even when SSE and SSE2 generation is enabled! After looking through the interlocked intrinsics I have only found contradictions in documentation and, unless I am going insane, improper implementation. Similarly, the load acquire and store release semantics specified for volatile are not reflected in instructions generated. For reference, I am using VC8 standard in debug on Windows XP, testing with SSE and SSE2 generation on and off. Tag: Visual C++ Language Question about accepting strings of European format Visual C++
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    - About XmlTextWriter Hi how can i write (and read) to a XML file on this format: <color id="red"> </color> If i use: DataWrite->WriteElementString("color","red"); will appear like: <color>red</color> and if i use: DataWrite->WriteStartElement("color",nullptr,"red"); will appear like: < color xmlns:color =" red "> thanks!! Tag: Visual C++ Language Question about accepting strings of European format Visual C++
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    - CDialog based app is crashing on exit at AFX_MODULE_STATE::~AFX_MODULE_STATE() Hi, I have a Cdialog based modal dialog application that is crashing on exit in release only. I do nothing with the dialog except open it and then close it by using the "x" of windows. it's an mfc project using dynamically linked dlls. The app is a global object, and a modal dialog is created in its initInstance. the app crashes at the line delete m_pDaoState;(in afxstate.cpp) The value of the pointer is invalid.. Access violation. AFX_MODULE_STATE::~AFX_MODULE_STATE() { #ifndef _AFX_NO_DAO_SUPPORT delete m_pDaoState; #endif // clean up type lib cache map, if any if (m_pTypeLibCacheMap != NULL) { m_pTypeLibCacheMap->RemoveAll(&m_typeLibCache); delete m_pTypeLibCacheMap; } } Can someone help me here ! I see this happening only in release. Thanks Nick. Tag: Visual C++ Language Question about accepting strings of European format Visual C++
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    - Problem opening a fiel using fopen_ I wrote this little program to a small bussines. In the code, first i have to check that a serial number that the customer have in the file :(c:\windows\file.bin) is the same as the program in its pc. /** Microsoft Visual Studio 2005 Version 8.0.50727.762 (SP.050727-7600) Microsoft .NET Framework Version 2.0.50727 **********************/ errno_t err = 0 ; err=fopen_s(&fp, "d:\\windows\\file.bin","r"); but I get an error (err is set to "2" wich means file or path not found). But when i use this line under the turboc compiler it works ok: Turbo C v3.0 by Borland fp=fopen ( "d:\\windows\\file.bin" , "r" ); As you can see both are the same path but just the last one seems to work. Is it a compiler problem Am i doing something wrong I will appreciate any help Thanks in advance rca_rodrigo @ hotmail.com Tag: Visual C++ Language Question about accepting strings of European format Visual C++
  - 9
    - Cannot handle preprocessor definition on 64bit platform I can compile a project successfully on x86 platfomr. When I switch to x64 config, I got the following error when compiling: Error 1 fatal error C1083: Cannot open source file: 'NO_CONFIG_READER': No such file or directory File: c1xx This error sounds wired since ��NO_CONFIG_READER�� is not a file. It is a preprocessor definition defined in the project property. Any hints Thanks, Tag: Visual C++ Language Question about accepting strings of European format Visual C++
  - 10
    - New to VC++ Programming hi all!... i am a software engineer, i always worked on VB & m quite good in that. in that i have mostly made database applications. but now i want to switch to different type of projects like, the projects which can communicate with the system & hardware. please let me know what VC++ can do which other languages cant do. i heard that its the language which can do anything but what it can do, what is the scope of this language, i dont know. please advice me in this. thanks & regards, Adarsh... Tag: Visual C++ Language Question about accepting strings of European format Visual C++
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    - IE7 browser Tabbing issue-Could you help? Tag: Visual C++ Language Question about accepting strings of European format Visual C++
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    - Simple code: Which way is best practise? This simple program takes a users name and a padding value; and creates a frame containing a greeting(see console output). The padding value is used to decide how many spaces exist between the frame and the greeting. My question is: There are two ways the program could check to see if its time to write the blank space on the left/right side of the greeting. Note: this check only occurs if its known that an '*' or the 'Greeting!' will not be written. Which Method is best Code Snippet 1) IF on the same row as greeting AND in the second column OR in the column directly after the greeting Then write blank space. if (r == pad + 1 && (c == 1 || c == (greeting.size() + (pad +1 ))) ) 2) IF on the same row as the greeting then write blank space if (r == pad + 1) Console Output: Please enter your first name: Brizo Enter value for padding: 5 ************************* * * # r == pad + 1 == 6 * * # c == (greeting.size() + (pad +1) == 20 * * * * * # Hello, Brizo! # * * * * * * * * * * * ************************* Full Program (code in question highlighted in RED ) // Framed Greeting with 'blank spaces' being written in a 'single output expression' #include #include #include using std::cin; using std::endl; using std::cout; using std::string; int main() { // ask for persons name cout << "Please enter your first name: " ; // read the name string name; cin >> name; // ask user for padding value cout << "Enter value for padding: " ; // read the padding value int pad; cin >> pad; // build the message that we intend to write const string greeting = "Hello, " + name + "!" ; // the dimensions of the frame defined as the number of 'rows' and 'cols' to write const int rows = pad * 2 + 3; const string::size_type cols = greeting.size() + pad * 2 + 2; // Calculate and builds the 'blank space'between the borders and the 'blank space' on either side of the greeting const string blankLine((greeting.size() + pad * 2), ' ' ); const string greeting_padding(pad, ' ' ); // write a blank line to seperate the output from the input cout << endl; // write rows of output // invariant: we have written r rows so far for ( int r = 0; r != rows; ++r) { string::size_type c = 0; // invariant: we have written c characters so far in the current row while (c != cols) { // is it time to write the greeting if (r == pad + 1 && c == pad + 1) { cout << greeting; c += greeting.size(); } else { // are we on the border , is it time to write a '*' if (r == 0 || r == rows -1 || c == 0 || c == cols -1) { cout << "*" ; ++c; } // is it time to write the greeting pad else if ( r == pad + 1 && (c == 1 || c == (greeting.size() + (pad + 1 ))) ) { cout << greeting_padding; c += greeting_padding.size(); } // it must be time to write the blank line else { cout << blankLine; c += blankLine.size(); } } } // close while() cout << endl; } // close for() getch(); return 0; } // close main() Tag: Visual C++ Language Question about accepting strings of European format Visual C++
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    - MSBuild running from Local System / 1902 mspdbsrv faulty / KB920770 / VS2005SP1 Hi I've been executing msbuild.exe from the NT_AUTHORITY\SYSTEM account to build VS 2005 C# projects and the builds have been working as expected. Recently, I attempted the same for a VS 2004 C++ project and the build failed with the following error. fatal error C1902: Program database manager mismatch; please check your installation Is this a bug with msbuild or am I doing something wrong Thanks Tag: Visual C++ Language Question about accepting strings of European format Visual C++
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    - convert struct from 2 dimensions to 1 in order to marshal to managed code given the struct sJoint here in some 'unmanaged code' that I need to access via vb.net through interop. I saw a post from Peter Huang (Microsoft Online Partner Support) who said "We can not marshal a structure with a two dimensions array inside, we need to treat it as a single dimension array . " Based on my observations tracing through vb.net code after the marshalling occurred when trying to use two dimensional arrays, I would agree. The struct used in the marshalling that is passed as a paremeter into calls to the C++ from the vb.net is the blue code below; Looks like I need to convert the C++ dAxes declaration to a single dimensioned array so it can be consumned on the other side of the managed/unmanaged boundary. How will I convert code such as the line of SimmJoint->universal.axis [0] = Joint->dAxes [0] below Thanks ! Greg Code Snippet typedef struct sJoint { double dAxes[3][3]; } sJoint; SimmJoint->universal.axis[i][0] = Joint->dAxes[i][0]; < StructLayout(LayoutKind.Sequential, CharSet:=CharSet.Ansi)> Public Structure Joint <VBFixedArray(2, 2), System.Runtime.InteropServices.MarshalAs(System.Runtime.InteropServices.UnmanagedType.ByValArray)> Public Axes(,) As Double Public Sub Initialize() ReDim Axes(2, 2) End Sub End Structure <StructLayout(LayoutKind.Sequential, CharSet:=CharSet.Ansi)> Public Structure Segment Public Joint As SolverJoint Public Sub Initialize() Joint.Initialize() End Sub End Structure Tag: Visual C++ Language Question about accepting strings of European format Visual C++
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    - Difficulties with error codes C2504 and C2248 Hello, I am currently having two errors that I just can't seem to figure out. The first is error code C2504 " 'Expr' base class undefined" and the second is error code c2248 " 'Expr' :: 'Expr' cannot access private member declared in class 'Expr'." My program uses a hierarchy of classes to store mathematical expressions, which can be evaluated using a visitor class. Expr is a virtual class that holds all expressions, literal, binary, and unary. Binary is a subclass of Expr, and holds all binary operations, such as addition, subtraction, and multiplication. Add is a subclass of Binary, and uses pointers _left and _right to hold its operands. Each class is also located in its own .h file. I have pasted the code below, and noted where the error occurs. I would greatly appreciate any help. I've been stuck on this one for at least 8 hours, and I know the solution can't be that difficult //code for Expr.h #ifndef EXPR #define EXPR class Visitor; #include "Visitor.h" class Expr { public : virtual void Accept(Visitor&) = 0; ~Expr(); private : Expr(); Expr(Expr&); }; #endif //code for Binary.h #ifndef BINARY #define BINARY #include "Expr.h" class Binary: public Expr { public : virtual void Accept(Visitor&) = 0; Expr* getright(); Expr* getleft(); ~Binary(); protected : Binary(Expr* left, Expr* right): _left(left), _right(right){}; private : Expr* _left; Expr* _right; Binary(); Binary(Binary&); }; #endif //code for Add.h #ifndef ADD #define ADD #include "Expr.h" #include "Binary.h" class Add: public Binary { public : Add(Expr* left, Expr* right): _left(left), _right(right){}; Expr* getright() { return _right; } Expr* getleft() { return _left; } ~Add(); Add(); virtual void Accept(Visitor& v) {v.visitadd( this );} private : Expr* _left; Expr* _right; Add(Add&); }; #endif Tag: Visual C++ Language Question about accepting strings of European format Visual C++
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    - All is fine in release mode, weird bug in debug mode Hi, my program works fine in release mode, but in debug mode I get a very strange behaviour, upon the entry to the operator=, e refers to a correct location, but as some auto generated entry instructions are hit (these instructions are not generated in release mode because this function is inlined) it becomes invalid, so what can be done to resolve this problem Code Snippet template <class T> THOR_INLINE FixedVector& operator=( const Expression<T>& e) <<<<<<<<HERE e IS VALID 00411D20 push ebp 00411D21 mov ebp,esp 00411D23 sub esp,0E4h 00411D29 push ebx 00411D2A push esi 00411D2B push edi 00411D2C push ecx 00411D2D lea edi,[ebp-0E4h] 00411D33 mov ecx,39h 00411D38 mov eax,0CCCCCCCCh 00411D3D rep stos dword ptr es:[edi] <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<AFTER THIS INSTRUCTION EXECUTES, e BECOMES CORRUPT, REFERING TO 0XCCCCCCCC, AND PREVIOUS INSTR SETS THIS ADRESS 00411D3F pop ecx 00411D40 mov dword ptr [ebp-8],ecx { //assign_expr(e); block_t tmp; for (unsigned int i=0; i<num_blocks; ++i) 00411D43 mov dword ptr [i],0 00411D4A jmp Thor::FixedVector<float,4,1,4,Thor::StandartAllocator>::operator=<Thor::UnaryNode<Thor::UnaryMinus,Thor::Leaf<Thor::FixedVector<float,4,1,4,Thor::StandartAllocator> > > >+35h (411D55h) 00411D4C mov eax,dword ptr [i] 00411D4F add eax,1 00411D52 mov dword ptr [i],eax 00411D55 cmp dword ptr [i],4 00411D59 jae Thor::FixedVector<float,4,1,4,Thor::StandartAllocator>::operator=<Thor::UnaryNode<Thor::UnaryMinus,Thor::Leaf<Thor::FixedVector<float,4,1,4,Thor::StandartAllocator> > > >+5Dh (411D7Dh) { e.tree.traverse( tmp, i ); 00411D5B lea eax,[i] 00411D5E push eax 00411D5F lea ecx,[tmp] 00411D62 push ecx 00411D63 mov ecx,dword ptr [e] 00411D66 call Thor::UnaryNode<Thor::UnaryMinus,Thor::Leaf<Thor::FixedVector<float,4,1,4,Thor::StandartAllocator> > >::traverse<Thor::Block<float,1>,unsigned int> (4110AAh) block_assign( tmp, i ); 00411D6B mov eax,dword ptr [i] 00411D6E push eax 00411D6F lea ecx,[tmp] 00411D72 push ecx 00411D73 mov ecx,dword ptr [this] 00411D76 call Thor::FixedVector<float,4,1,4,Thor::StandartAllocator>::block_assign (41129Eh) } 00411D7B jmp Thor::FixedVector<float,4,1,4,Thor::StandartAllocator>::operator=<Thor::UnaryNode<Thor::UnaryMinus,Thor::Leaf<Thor::FixedVector<float,4,1,4,Thor::StandartAllocator> > > >+2Ch (411D4Ch) return *this; 00411D7D mov eax,dword ptr [this] }; Tag: Visual C++ Language Question about accepting strings of European format Visual C++

Lee3305

A friend of mine from the UK was testing a program I wrote in which there are parts where the user needs to input a double, almost always a decimal. Since he is from the UK, he has his regional setting on Windows set to European, thus, our decimal points are commas for them. Since my program is looking for decimal points, it crashes when it sees a comma used in that manner. Of course, when he set his regional settings to US, the program ran fine with no errors, but then he cant use any of his other programs. So, I need a way to make my program compatible with input in which a comma is a decimal point. Any help would be greatly appreciated.

Thanks in advance,

Lee

Re: Visual C++ Language Question about accepting strings of European format

einaros

How are you reading the decimals If you're using STL streams, you can set the locale to the OS default such as:

Code Snippet

locale loc("");

cin.imbue(loc);

cout.imbue(loc);

Re: Visual C++ Language Question about accepting strings of European format

Lee3305

Im reading them through a text box.

Re: Visual C++ Language Question about accepting strings of European format

einaros

You will have to be more specific. Are you using the MFC Native or managed code ATL

Re: Visual C++ Language Question about accepting strings of European format

Lee3305

Sorry, Its manged C++ using Windows Forms

Re: Visual C++ Language Question about accepting strings of European format

einaros

Are you manually looking for a decimal point, or are you using System::Convert or similar

Re: Visual C++ Language Question about accepting strings of European format

Lee3305

On the TextBox_TextChanged event, I assign the TextBox->Text to a property to pass back on the main form. Yes, I also use System::Convert.

Re: Visual C++ Language Question about accepting strings of European format

einaros

One of the System::Convert overrides takes a string as first parameter, and an IFormatProvider as the second. Pass a NumberFormatInfo instance initialized to the culture of your choice, or use NumberFormatInfo::CurrentInfo for the format currently configured by the user's operating system.

Re: Visual C++ Language Question about accepting strings of European format

Lee3305

Thanks, Ill definately give this a try when I get off work