Linker Error, Please help

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  - 1
    - problem with PostMessage error #87 According to MSDN documentation, it is not quite clear if GetLastError is applicable for SendMessage function (but works with PostMessage ). Does your custom message actually achieve the target window and you handle this message Tag: Visual C++ General Linker Error, Please help Visual C++
  - 2
    - MFC and CLR - Attempt to load an unverifiable executable with fixups Setting "Register Output" to "No" has got rid of it! Thank you so very much. I'm new to all this MFC and .net malarkey (I'm used to working on games) so it's a new and confusing world. The other errors are in the process of being fixed ^^;; But they haven't been causing much trouble so far so they've kind of slid down the priority list... Once again thank you. This problem has caused me no end of head scratching and caused me to spend far too long on google. Tag: Visual C++ General Linker Error, Please help Visual C++
  - 3
    - Frustrating Error - error C2259: cannot instantiate abstract class The Error error C2259: 'SphereEntity' : cannot instantiate abstract class 1> due to following members: 1> 'void Entity::render(G3D::RenderDevice *) const' : is abstract 1> : see declaration of 'Entity::render' 1> 'G3D::RealTime Entity::getIntersectionTime(const G3D::Ray &) const' : is abstract 1> : see declaration of 'Entity::getIntersectionTime' SphereEntity is a declared as a subclass of Entity. Entity is an abstract class with two functions: render and getIntersectionTime. These two purely virtual functions of Entity were implemented in the SphereEntity class. I receive the error when I try to create an object of SphereEntity. Any help would be appreciated. Thanks CODE ------------------------- Entity.h ------------------------- //#ifndef Entity_H //#define Entity_H #pragma once #include <G3DAll.h> //#include "SphereEntity.h" // Entity class Entity { public: bool selected; Entity() : selected(false) {} virtual ~Entity() {} virtual void render(RenderDevice*)const = 0; // Returns amount of time to intersection starting at ray.origin and traveling with ray.velocity. virtual RealTime getIntersectionTime(const Ray&) const = 0; }; //#endif -------------------------------------------------------------------------- ------------------------- SphereEntity.h ------------------------- //#ifndef SphereEntity_H //#define SphereEntity_H #pragma once #include <G3DAll.h> #include "Entity.h" // SphereEntity : subclass of Entity class SphereEntity: public Entity { public: SphereEntity(Color4* _color, Vector3* _position, float _radius); virtual void render(RenderDevice*); virtual RealTime getIntersectionTime(const Ray&); private: Color4* _color; Color3* _wireColor; Vector3* _position; float _radius; Sphere *_sphere; // RenderDevice *renderDevice; // Vector3 outNormal; // Vector3 outLocation; }; //#endif -------------------------------------------------------------------------- ------------------------- SphereEntity.cpp ------------------------- #include "SphereEntity.h" SphereEntity:: SphereEntity(Color4* _color, Vector3* _position, float _radius){ this->_color = _color; this->_position = _position; this->_radius = _radius; _wireColor = new Color3(1,1,1); } void SphereEntity::render(RenderDevice* renderDevice){ //this->renderDevice = renderDevice; *_sphere = Sphere(*_position, _radius); if(selected == true){ _wireColor = new Color3(1, 1, 1); renderDevice->setRenderMode(RenderDevice::RENDER_WIREFRAME); } Draw:: sphere(*_sphere, renderDevice, *_color, *_wireColor); renderDevice->setRenderMode(RenderDevice::RENDER_SOLID); } RealTime SphereEntity::getIntersectionTime(const Ray& _ray){ double timeForCollision = 0; timeForCollision = _ray.intersectionTime(*_sphere); return timeForCollision; } Tag: Visual C++ General Linker Error, Please help Visual C++
  - 4
    - To read the sentence as a whole(single argument) from command-line arguments use sscanf to store the integer and string in 2 seperate variables. eg: inputStr = "123 Hello test program"; int i; char str[20]; sscanf(inputstr, "%d %s", &i, str); now u can use the text input from str. Tag: Visual C++ General Linker Error, Please help Visual C++
  - 5
    - syntax of .vcproj files Hello, Does anyone have an idea what &quot means within a .vcproj file For example: AdditionalIncludeDirectories=""..\..\include\CGAL\config\msvc7";"..\..\include"" Thanks, Angy Tag: Visual C++ General Linker Error, Please help Visual C++
  - 6
    - Copy constructor? To add to the other answers you got, you could check out this chapter excerpt from my book :- http://www.codeproject.com/books/CppCliInActionCh1Ex2.asp It discusses constructors, copy constructors and assignment operators. Tag: Visual C++ General Linker Error, Please help Visual C++
  - 7
    - List Box Hi! All of the time I was using the myListBox->Items->Add() method. However it can take only a parameter of a type System:: Object^ . The problem is that I do not know how to convert an object of type std:: string (or char* , wchar_t* or System:: String ) to an object of type System:: Object^ . I noticed I can insert System:: String^ , but I do not know how can I convert something to that type (for example, std:: string ). To be more specific, I would like to be able to do something like this: Code Snippet String^ s; string tmp; ListBox myListBox; tmp = "some string"; s = tmp; // doesn't work myListBox->Items->Add( s ); Tag: Visual C++ General Linker Error, Please help Visual C++
  - 8
    - Invalid Operator < If you could provide us with a downloadable version of the project, with all needed dependencies, that would probably solve things much faster. And on a similar note: trying to keep examples as short, and narrowed down, as possible is usually a good idea. Tag: Visual C++ General Linker Error, Please help Visual C++
  - 9
    - Structure Alignment/Packing issue Can you please elaborate new Y' application to be made lil more. I am unable to get your point. I have tried simple sample solution too but even thats not seem to be working for me. My complier Settings for struct Member Alignment is 4 bytes for both the application. One of my structures is struct A { float b; float c; unsigned long int; short int ; short int ; short int ; short int ; short int ; unsigned char; unsigned char; unsigned char; unsigned char; unsigned char; unsigned char; } struct B { unsigned long; struct A a; } I have checked the order of the structure in both the application I am reading/writing structure B in the file. Please help me out. Thanks in advance. Tag: Visual C++ General Linker Error, Please help Visual C++
  - 10
    - Problem with CString Variable The error message says that the stack is corrupted; another term (in this context) for stack is memory. As Einaros implies, somewhere in your program, memory is being modified that should not be. It could be occurring anywhere in the dialog but the C++ error-checking code does not detect the problem until the dialog ends. I think it is only coincidental that the problem occurs when you use a double but does not occur when you use other types of data. Since a double is larger than the other types, it might be that the memory corruption occurs in a manner that the error-checking code does not detect the problem when the shorter sizes of types are used. Use of static for the CString might also be hiding the problem until you modify the code again in a manner that allows the error-checking code to detect the problem. If my description is the explanation, then we might not be able to help without seeing all your code. I prefer to avoid looking at a large amount of code. There are tools for debugging memory corruption but I am not familiar with the details of how to use them. Tag: Visual C++ General Linker Error, Please help Visual C++
  - 11
    - simple pointer question I.You wrote: Code Snippet int main(int argc, char **argv) { ... char **temp = (char **)malloc(SIZE); for(i=0; i// *temp[i] = *argv[i]; strcpy(temp[i], argv[i]); } Your code can crash for a number of reasons. First of all, declaring a variable "char **temp" will create a pointer to a series of pointers to characters. Judging by the rest of your code, you intend to copy the strings passed though the argv array to the same position in the temp array, but it really won't do that. Line by line Code Snippet char** temp = (char **)malloc(SIZE); will allocate SIZE bytes, and make temp point there. This means that you've got room for SIZE / size of pointer pointers, where size of pointer is 4 bytes when you're on 32-bit architecture (and 8 bytes when on x64). This allocation does not make room for the second dimension of the array, where you later attempt to copy the strings. Code Snippet *temp[i] = *argv[i]; This will assign the first character found in command line argument i to the first byte of the memory location where the i 'th pointer in temp points. *HOWEVER*, your first allocation hasn't initialized any of the pointers yet, so temp will either point to some random memory location, or to 0xCDCDCD if you're in debug build. In debug build, all allocated memory will have its bytes set to 0xCD, which tells whoevers debugging that the memory is cleared -- not yet assigned to. In other words, had you uncommented this code, the application would crash immediately. Code Snippet strcpy(temp[i], argv[i]); As with the previous assignment, this attempts to copy some data to whereever temp's i 'th pointer points. And as in the previous case, these pointers don't point anywhere yet, let alone to allocated memory. strcpy expects the desination pointers to be healthy, and have enough allocated room to hold whatever you're copying from. In this case you don't even know how many bytes each argument is, until you've measured the length to the null terminations (each string passed through argv will have a number of characters, then a terminating null byte (0x00) to signal and end of string). The solution Making this work as it should is a whole lot simpler if you look to the STL (standard template library). Managing pointers, let alone pointers to pointers of varying allocation size, is a bug prone and horrible thing, which I wouldn't recommend anyone to do given the power of the STL. Simply put, your code could be rewritten, bug free, such as: Code Snippet vector < string > myArguments ( argv , argv + argc ); The vector container will manage the memory needed to keep / point to the string structures, and each string will allocate the necessary (and likely varying) number of bytes to hold the each argument. As a bonus, you won't have to think about deallocation at all. When the vector (and hence the strings) fall out of scope, they will deallocate themselves. To use this, your application could look like: Code Snippet #include <iostream> #include <string> #include <vector> using namespace std; int main(int argc, char** argv) { vector<string> myArguments(argv, argv + argc); cout << myArguments[0] << endl; // print first element (the filename) } Plain and simple Tag: Visual C++ General Linker Error, Please help Visual C++
  - 12
    - gcroot<ManagedType^> m assignment The following code compiles fine :- ref class R { }; #pragma unmanaged class N { gcroot<R^> _r; public: void Assign(gcroot<R^> r) { _r = r; } }; #pragma managed int main(array<System :: String ^> ^args) { N n; n.Assign(gcnew R()); return 0; } Tag: Visual C++ General Linker Error, Please help Visual C++
  - 13
    - matlab builder for c++ project Hi, I used matlab builder for .net to build a .net component to be used in C++ project (called in .cpp file). In Matlab, it has: Dl.Zone(1); // Dl has several Zones. But when I used MWStructArray^ z = (MWStructArray^)(dl->GetField( "Zone(1)" )); to get the struct, it gave run time error: The field specified was not found. How should I access Zone(1) Thanks! Tag: Visual C++ General Linker Error, Please help Visual C++
  - 14
    - mfc70.dll not found :( I didn't build it i downloaded the program. Tag: Visual C++ General Linker Error, Please help Visual C++
  - 15
    - segmentation fault due to the struct pointers Hi there, Please see this code: typedef struct { char **item; char **user; }Listtype; int main(int argc, char **argv) { .... Listtype List; ... strdiv(buf, &List); .. } void strdiv(char *buf, Listtype *List) { ... List->item[0] = strtok(buf, "<>"); <-- HERE ... The segmentation fault occurs at HERE. What's wrong Please tell me what problem is. Thank you. Tag: Visual C++ General Linker Error, Please help Visual C++
  - 16
    - How to judge the attribute of the folder hi everyone Now i met the question that I cannot get the attribute of the Folder I seted the folder read-only and tried if((GetFileAttributes (folderpath) & FILE_ATTRIBUTE_READONLY) != 0) { MessageBox("readonly"); } else { MessageBox("else"); } And every time I got the message "esle", Is there any other method to resolve the problem Thanks a lot Tag: Visual C++ General Linker Error, Please help Visual C++
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  - 1
    - XML Extracting Attributes (Simple Question) calmal20 wrote: Anyone know what I'm doing wrong Many thanks for your help!!! Is that the actual code Can you see the error in here XmlTextReader *reader = XmlTextReader(); Did you mean XmlTextReader *reader = XmlTextReader(); And then while (reader.Read()) should be while (reader->Read()) Does that code even compile Are you using VC++ 2003 Tag: Visual C++ General Linker Error, Please help Visual C++
  - 2
    - Populating globally defined tchar field Simple Samples wrote: The documentation of __declspec(selectany) has the following example: Code Snippet __declspec(selectany) int x1=1; So if you use that syntax, then it is simply a matter of intiallizing the string in the manner you are familiar with instead of initializing the int as in the example. OK, but how would i change the value after initialisation Tag: Visual C++ General Linker Error, Please help Visual C++
  - 3
    - Toggling Fullscreen How can i hide the toolbar on top of my dialog or window in and show it again I am asking this to make a fullscreen toggling. Thank you very much. Tag: Visual C++ General Linker Error, Please help Visual C++
  - 4
    - hangman project I ended up using strlen(), and I also used strspn(). I used strlen() to get the origional character length of the first word then I used strspn to get the length of the guessed word to keep comparing the two against each other. basically I took the variable word[25] which stores the word, then guess[25] and then I did i = strlen(guess, word) That measures to see how many characters match up. So then I did at the bottom of the do loop *at the while part of the loop* "}while((i != wordlength) && (wrong == 'n'));" wrong of course being the amounts of times they could get it wrong. basically every time they got one wrong it would go to an if statement. nested in a for loop: for(int f = 0; f < wordlength; f++) { if(guess1 == word[f]) { wrong = 'n'; } } if(wrong == 'y') { for(int o = 0; o < 18; o++) { hungman[t] = hangman[t] ; } t++; } but yea, I went to my teacher saying "I got the hang man project done" waiting for her to be suprised that I had it done early and waiting to show her so she'd be more suprised but she then said "oh, that was a mistake, you werent actually supposed to do it" so all this work for nothing. I almost smaked her lol. I do however want to improve it, so if anyone is willing to take a look at my code and tell me ways to improve apon what IM doing that would be great. Tag: Visual C++ General Linker Error, Please help Visual C++
  - 5
    - Constructors for global variables are not called??? Holger Grund wrote: AFAICT, that's not a bug but it is the way all significant linkers work and have ever worked. Object files are selected from an archive, if and only if they are required to satisfy a strong symbol reference (via the archive symbol table). The unreferenced COMDAT elimination phase runs logically after that (even though a smarter linker will probably construct the dependency graph earlier). The C++ standard, section 3.7.1, specifies: "If an object of static storage duration has initialization or a destructor with side effects, it shall not be eliminated even if it appears to be unused, [...]" And IMO it should most certainly not be eliminated in presence of the /OPT:NOREF flag. The fact that /INCLUDE successfully overrides the removal strengthens my belief. Tag: Visual C++ General Linker Error, Please help Visual C++
  - 6
    - ActiveX on Vista Hi We have application which is launched by Activex and works fine on Windows XP - but we are having problems with this on Vista. We have looked at many MSDN articles which suggest using manifest files. We have implemented manifest in resource section of correct .exe file using MSVS. We have also read some articles regarding the use of MT.exe tool (v5) from the Vista SDK to embedd the manifest file, which seems to complete the embedding process ok. Using this example from MSDN:- <trustInfo xmlns="urnchemas-microsoft-com:asm.v3"> <security> <requestedPrivileges> <requestedExecutionLevellevel="requireAdministrator" uiAccess="true"/>; </requestedPrivileges>; </security> </trustInfo> Unfortunately when the Activex is launched Windows Vista seems to ignore the manifest and copy the files from website to the virtualized folder and not the real folder. The real destination folder is "c:\users\%username%\documents\%appname%" - But the files keep being copied to the virtualised folder:- "c:\users\%username%\appdata\local\micrsoft\windows\temporary internet files\virtualized\c\users\%username%\documents\%appname%\" after copying files to the virtualized folder, the application attempts to launch but we get "Error Access Denied" and cannot launch. Also:- It seems that "manifest" files are for System folders and not user folders, so we are unsure why this is happening with the users profiles folders also. If files are manually copied to correct location, the application can be manually launched (but not from activex) Any help would be greatly appreciated to overcome this problem and get our application running from activex like it does successfully in windows xp. Regards Ian Tag: Visual C++ General Linker Error, Please help Visual C++
  - 7
    - Output binary build from command line crashed Hmm, on a second glance I can guess why it ended up crashing. As a general rule you should make sure that the lib files are after everything else in the command line. Tag: Visual C++ General Linker Error, Please help Visual C++
  - 8
    - In what order does CFileFind::FindFile visit the files? BOOL bWorking = finder.FindFile("*.xml"); while (bWorking){ bWorking = finder.FindNextFile(); fileName = (LPCTSTR) finder.GetFileName(); } I used the above codes to visit eight files, AMAM004_1130607CRW_TEST.xml, AVIA007_1130607CRW_TEST.xml, DGLM002_1130607CRW_TEST.xml, FDOM003_2130607CRW_TEST.xml, IMIM001_3130607CRW_TEST.xml, RKaA008_2130607CRW_TEST.xml and SH_M005_2130607CRW_TEST.xml. In one program, FindFile visits files in the alphabetical order of files' names. However, in another program, the first visited file is SH_M005_2130607CRW_TEST.xml. Can I adjust the visiting order of FindFile 3X Tag: Visual C++ General Linker Error, Please help Visual C++
  - 9
    - menu handler... help me. okay. let me explain... i have extended menustripitem and button and made two different custom controls. and similarly i have another class named myShortcuts. all of these extend from a base class which will have a serviceId depending upon which i have to map the delegates. i came down to this iomplementation thinking that i need not to write different delegates/handlers for the event which have same functionality. all these have to happen @runtime. does that give u an idea of what im trying to know thanQ Tag: Visual C++ General Linker Error, Please help Visual C++
  - 10
    - hello, a program with release and debug Tony2008 wrote: thanks for Ramkrishna. but I have not solved this problem. My program crashed when I invoked a function exported from a dll with debug mode,but release mode. Is it relative to runtime library The amount of information you have provided is not enough to make any statement, you should debug the release version (by enabling debug info and program database from project properties) and find out the code responsible for that. The articles mentioned in my last post talk about various differences in debug & release mode, you should give a good read once. Tag: Visual C++ General Linker Error, Please help Visual C++
  - 11
    - CAnimateCtrl does not animate Hello! In my project on MFC I use the ADO library to get data from MSSQL. I want some dialog window to be displayed during long operation, such as executing any store procedure that download image from MSSQL. I try it in the following way: 1) Creating the modelles dialog with animate control 2) Executing the store procedure 3) Destroying the modelles dialog The fact is that CAnimateCtr in my modelles dialog doesn't animate in such operation. If I try to create such dialog in another way, for example, after button click, it animates OK. What should I use May be, the second thread will help me What is the simplest way to get success Thanks for answers Tag: Visual C++ General Linker Error, Please help Visual C++
  - 12
    - How to use dll created in vc,in vb hi, I have created a DLL in Visual c++, I need to call this in Visual basics. I just tried to Use reference file, but there were no vc++ ref. files Tag: Visual C++ General Linker Error, Please help Visual C++
  - 13
    - Shortcut Key for Dialog Button Yes, Is a dialog based. I will try it. Thanks alot! Tag: Visual C++ General Linker Error, Please help Visual C++
  - 14
    - ATL-COM: Failed to return new Code Element... Migrating the work to a new project and copying all the code solves the problem. But... after a while the same issue appears again. Tag: Visual C++ General Linker Error, Please help Visual C++
  - 15
    - How to show all build commands in Visual Studio (C++) output window? Hi. I am currently working on a project with about 60 build targets in a Visual Studio (.NET) solution. We've had a number of issues with developers changing build settings and/or adding targets without adhering to our build guidelines. To help ensure build consistency I would very much like to have *all* Visual C++ build commands shown in the build output (whether built within the IDE or from the command line for our official "cm" builds) -- specifically the commands sent to the compiler (cl) and linker (link). By default, VS hides this info, and I have yet to find a way to make it visible. I am much more concerned with properly [and consistently] built modules that a concise build log. Anyone know how to show all build information with VS .NET and VS 8 Many thanks! Ken Tag: Visual C++ General Linker Error, Please help Visual C++
  - 16
    - Calling unmanaged C++ dll function with char** from C# hi, i have a similar problem. i created a wrapper for a third party DLL, and one of the functions is: 6.1.5.4 GetUsbDevicesNameEnum PROTOTYPE I C_MORPHO_Device::GetUsbDevicesNameEnum ( UL i_ul_Index, PC & o_pc_MsoName, PC & o_pc_MsoProperties); DESCRIPTION InitUsbDevicesNameEnum must be call before using this function. This function returns a string containing the name of the MSO. PARAMETERS i_ul_Index: This index is between 0 and the number of connected device returned by the function InitUsbDevicesNameEnum. o_pc_MsoName: A string containing the name of the MSO (product number-serial number). o_pc_MsoProperties: A string containing the type of the MSO (MSO100, MSO300...) and other information. RETURN VALUE MORPHO_OK The execution of the function was successful. MORPHOERR_BADPARAMETER The index is unknown. now, in my wrapper, i created this function as: int GetUsbDevicesNameEnum(unsigned long ulIndex, char* &pcMsoName, char* &pcMsoProperties); from my C# application, i accessed this function like this: unsafe { uint UsbDevices; sbyte[] szTempName = new sbyte[255]; sbyte[] szTempType = new sbyte[255]; //enumerate the number of connected Morpho USB Devices nReturn = dllMorphoBridge.InitUsbDevicesNameEnum(&UsbDevices); if (nReturn == 0 && UsbDevices > 0) { for (int i = 0; i < UsbDevices; i++) { fixed (sbyte* MsoName = szTempName) { fixed (sbyte* MsoType = szTempType) { //returns the name of the USB Device dllMorphoBridge.GetUsbDevicesNameEnum(0, &MsoName, &MsoType); when i build my code, i get the error: "Cannot take the address of a read-only local variable." can somebody help me regarding this I really, really need help. Thanks! Heaven help me, Marj Tag: Visual C++ General Linker Error, Please help Visual C++

DipankarVerma

Hi all,

I have installed VS 2005 professional in my system and tried to make a simple MFC Dialog based program but it is giving liker error.

1>mfcs80ud.lib(stdafx.obj) : error LNK2001: unresolved external symbol "int __cdecl _AfxInitManaged(void)" ( _AfxInitManaged@@YAHXZ)

1>C:\Documents and Settings\billak\My Documents\Visual Studio 2005\Projects\TestMFC\Debug\TestMFC.exe : fatal error LNK1120: 1 unresolved externals

Please help me, what I have to do.

Thanks in Advance

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Re: Visual C++ General Linker Error, Please help

einaros

See http://forums.microsoft.com/MSDN/ShowPost.aspx PostID=873056&SiteID=1.

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Re: Visual C++ General Linker Error, Please help

DipankarVerma

I have seen this, but still not able to compile a simple program of MFC.

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Re: Visual C++ General Linker Error, Please help

sivachidambaram

hi ,

i think this will be the installation error of vs2005,but i am not sure, if it is possible try by reinstalling with any other copy of vs2005

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Re: Visual C++ General Linker Error, Please help

DipankarVerma

Thanks buddy

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