• Tags: Microsoft, msdn, Software, Microsoft Visual C, C++

    Microsoft Visual C & C++

    • Access violation reading location
    • I am creating an MFC application with activeX document server support. Theapplication runs perfectly fine when i run as a standalone application. Butwhen i run the application in Internet explorer,it opens however opening a form from the top menubar, it gives an error"access violation reading lo...
    • Access violation reading location 0x00000000
    • I have a very simple C++ program that is giving me access violations in when debugging and I do not understand why. This is the program:#include <stdio.h>int main( void ){ char tmpName[L_tmpnam]; tmpnam( tmpName ); return 0;}The access violation occurs in the tmpnam( tmpName ) call. ...
    • Access violation reading location 0x00000000
    • I have a very simple C++ program that is giving me access violations in when debugging and I do not understand why. This is the program:#include <stdio.h>int main( void ){ char tmpName[L_tmpnam]; tmpnam( tmpName ); return 0;}The access violation occurs in the tmpnam( tmpName ) call. ...
    • Access violation reading location 0x00000000
    • Unhandled exception at 0x00000000 in ContactCenter.exe: 0xC0000005: Access violation reading location 0x00000000.I guess that I have a class pointer somewhere that have been set back to zero and that i'm calling it without checking if it points on something valid. Right?i.em_pHandler = 0;and so...
    • Access violation reading location 0x00000000.
    • I tried to run in debug mode some c++ code but i have a message box which appear with:Unhandled exception at 0x00411bc6 in Trial 3d1.exe: 0xC0000005: Access violation reading location 0x00000000.Can someone explain me the meaning of this message and how i can resolve my problem.I am using ...
    • Access violation reading location error
    • Hello,I am coding a mathematical model with VC++. When I debug the code, Iface with no erroe, but during executing, I face with below error"Unhandled exception at 0x0040c275 in Tar.exe: 0xC0000005: Accessviolation reading location 0x00000004".Could you tell me, how I can fix it? I have attached...
    • Access violation reading location error
    • Hello,I try to solve a mathematical model by calling a software with C++. During debugging the code, I face with no error, but when I run it I face with below errorAccess violation reading location 0x00000004".It seems that the code stops in " maestro.solve(defaultSearch);" line.I appreciate it if...
    • Access violation reading location with !=
    • I am attaching some code that hasa template abstract base class with an array of pointers to a template base structa derived class using the same template base structa derived class using a derived template structthe template base structthe template derived structthe data class for the templatesan e...
    • Access violation reading location...
    • Hello,I'm modifying an already programmed pretty big project in Microsoft Visual C++ .NET 1.1.The already written code is pretty messy, but I assume it was error free, because worked fine before modifying it.This program opens a video file, extracts a BMP frame and does some operations to the f...
    • Access violation redux
    • Im stymied by this problem though it seems simple. In my view class I have an event handler that stores the setup struct in an array that has been defined and initialized in my document class.(su and s are instance of the struct from the dialog class and the view class respectively)void CMapperView:...
    • Access violation releasing IMessagePtr
    • I am getting an access violation when my console program exits. It occurs in _com_ptr_t::_Release called from the destructor when the program exits. I need to read more about smart pointers but at the moment I am trying to use the sample program in Creating and Sending a Message (http://msdn.microso...
    • Access violation runtime error on WriteFile() call ...
    • Hi, I am debugging a runtime error on WriteFile() call. The error message is following: Unhandled exception at 0x77e962ee in FTUClient.exe: 0xC0000005: Access violation writing location 0x00000000. The code is as following: -- CStringA strSaved; CStringA sData; ... HANDLE hFile = CreateFileA(......
    • Access violation using ActiveX-dll
    • Hi! I have an annoying problem. I'm trying to use an ActiveX dll in my C++ program. The dll is written in VB, so I generated a h-file from the idl.Everything compiles, but when I run the test program I get an error at the line with an :eek: below. The code is really simple, but I don't kno...
    • Access violation using CComPtr<>
    • Hi!I'm getting access violations when my function exists. This is where it fails in ATLBASE.H ~CComPtr() { if (p) p->Release(); }My question is when do I have to explicitly release interface pointers? I'm new to smart pointers. I thought that things would free themselves up when they...
    • Access Violation using CCriticalSection in DLL
    • I have a log program that uses a CRiticalSection to synchronize writes to the log file. It works OK in most of my programs. When I Load a DLL (That I wrote) , I pass the address of the log program by reference to the DLL. When I call the log program from within the DLL, I get an access violation...
    • Access Violation using memcpy
    • I am really stumped as to why I am getting access violations when using memcpy. It happens on the 572 iteration everytime. rawReadBuffer = (char *)malloc( maxRecSz ); rtiReadBuffer = (float *)malloc( rtiRecordSize ); if( rawReadBuffer == NULL || rtiReadBuffer == NULL ) { return...
    • Access violation using modal dialogs
    • Hi all,It's sunday night. Deadline is approaching FAST!...and I've found a bug in my program.In my progam the user can open a number of modal dialog boxes. Other boxes are opened from the main program on different events. My problem occurs when the user has opened a modal dialog box and an...
    • Access Violation w/ "new"
    • This is the second post with the initialization of the pointer added to the code. It was previously omitted. I get an access violation when running the Debug version of the following code (MFC VC++ 4.0). The Release version runs through with no apparent problems. Help as to how to write it properl...
    • Access Violation w/ "new"
    • I get an access violation when running the Debug version of the following code (MFC VC++ 4.0). The Release version runs through with no apparent problems. Help as to how to write it properly and avoid the Access Violation (which occurs in processing the last line). Please email all help to CompuBa...
    • Access Violation w/ "new"... revised
    • This is the second post with the initialization of the pointer added to the code. It was previously omitted. I get an access violation when running the Debug version of the following code (MFC VC++ 4.0). The Release version runs through with no apparent problems. Help as to how to write it properly...
    • Access violation when accessing a variable defined in DLL?
    • I have an instance of a class that is declared as extern and implemented in my DLL. In Test.h file: class CFoo {}... extern CFoo g_foo; In Test.cpp file linked into Test.dll: #include "Test.h" CFoo g_foo; In Test.def: CFoo and g_foo are exported by ordinal. In Client.cpp that links with Test.dll...
    • access violation when accessing exe outside VS
    • hello folks,this might be a very simple question, I just don't have a clue where to look so please bear with me.I wrote a program. When in debug mode, I cannot use the "delete" command. I get an access violation upon running. This does not happen in release mode.When I navigate to the release o...
    • Access Violation when Adding CButton
    • I had a working application, and when I added a CButton attatched to a button on a dialog template with ClassWizard (or manually, doesn't matter) my program won't run. Upon further inspection the debugger reports an access violation. Now, no other code has changed. I cannot declare any...
    • Access Violation when calling an operator on a class in another dll
    • Hi All, I'm pulling my hair out with this one and would be most grateful for any help. I have a dll that has an exported class called Vector3. I have overridden the operator+. I call the operator+ from an exe (that imports the lib from the above dll) as follows: // EXE code Vector3 v1; Vect...
    • Access Violation when calling unmanaged C++ from managed C++
    • Hello,I have a very simple example, which produces an access violation whencalling an unmanaged functionfrom managed code.The error happens only in the release build. If you try a debug build,everything works fine !The code in console6.cpp was created by trial and error and makes no sence.If you...
    • Access Violation when calling VB project from VC++ debugger
    • I have a VB project which uses a VC++ activeX. Everything works fine, if I run the project using VB debugger.But when I try to debug the application, by calling VB project from VC++ ActiveX projects debugger, I get access violation. The VC++ ActiveX is a multithreaded activeX.whats going wrong her...
    • Access violation when closing a file
    • Hi, I am running my application in a debugger Windbg and I got the following exception: ******************************************************************************* * * * Exception Analysis * * * ******************************************************************************* *** WARNING: Unab...
    • Access violation when hook is installed; after WM_NCDESTROY of SysShadow window
    • I am setting a WH_CALLWNDPROC hook for the current thread using SetWindowsHookEx. When interacting with the file open/save dialogs of applications, I get a 'access violation' whenever a tooltip is about to be destroyed. The tooltip is associate with a shadow window having class name &#...
    • Access Violation when i try to break out of while loop
    • I have the following code running on Windows VC++ (MFC)I get access violation when i call break from while loopstrangely i dont get this assertion when i insert some cout and printf statementsthis doesn't make any sense to me, i admit i'm no big brains but i cant understand how addition of...
    • Access violation when opening CDatabase (im using DAO with Access 2000)
    • I have the following code in the InitInstance function of my application://for ACCESS 2000AfxGetModuleState()->m_dwVersion = 0x0601;//LoadLibrary("msjet40.dll");try{ this->m_pDatabase->Open(szDatabasePath, FALSE, FALSE, _T(";PWD=pwd")); }catch(CDaoException* exc){ AfxMessageBox("Database...
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