Whenever I try to compile a VC++ program using VS .NET 2003 I get an error saying mspdb71.dll not found. How can I fix this error? PS. I ran vsvars32.bat and it did not change a thing. Thanks, Nick Z....more >>

I have created an application and am trying to call functions from a previously existing dll. I can call some functions fine, but I get a link error an when I try to call any function that takes either an LPCTSTR or wchar_tas a parameter. I am using C++ and Visual Studio .NET. Here's two f...more >>

I've got a managed extension library that I'm attempting to convert from MSVC 2003 to MSVC 2005. I've converted the project file and am now attempting to compile the application. I get multiple occurrences of the following linker errors: extern "C" void __clrcall ___CxxCallUnwindDtor(vo...more >>

Folks, I've inherited some C++ code that I'm trying to convert from VC++ 6.0 to VC++ 2005 and was wondering if anyone could help as I haven't done any C++ programming in several years. The code is basically trying to populate a struct that is defined in the sspi.h file. The compile error...more >>

I am trying to upgrade from VS7.1 to VS8, but whenever I link any of our MC++ DLL's, I get the following errors: Creating library \sda\Main\bin\debug\XWRAP70.lib and object \sda\Main\bin\debug\XWRAP70.exp MSVCMRTD.lib(mstartup.obj) : error LNK2022: metadata operation failed (8013118D) :...more >>

Hello, Is there a workaround for the code-snippet below? namespace A { template<class T> class Foo { }; } template<class T> class Foo : public A::Foo<T> { friend class A::Foo<T>; }; ...more >>

Hi! Does any one has working example of how to set TreeView to right to left order. No matter of language. I checked in Visual C, simple API, C#, nothing works. Does it works at all ? Thanks! Igor....more >>

Hi, I'm writing a VC++.net 2005 application and i would like to use the ODBC connector. I would like to allow user to choose the DB he wants to have (MS SQL, PostgreSQl, MySQL, Oracle,...) by choosing the write ODBC driver. After that, i want to create a system DSN with information enter ...more >>

Hello, How can I write an Operating System in C or C++ -- Mateusz Rajca...more >>

Hello, I have some VC6 DLLs and I want to use them with NET EXEs (MFC 7.0), but the linker give me many errors, especially in functios with CStrings (parameters or return); How can I fix it? or have I to compile the VC6 DLLs in NET? Thanks in advance, William GS...more >>

I'm drawing graphics using the Graphics object one can grab in a Form's Paint event. But I'm getting a weird thing happening... These graphic shapes flicker (even if unchanged). UNLESS- I created a timer and had the timer update a Label on the form with timer interval set to 10. Now all the...more >>

I'm creating a simple custom control by inheriting the DataGrid Control. The reason I want to do this is because I want to stop the user from being able to enter the tables inside. Seems contrary to what the control is supposed to do but this is what I need. When someone is to click on the tab...more >>

hi i am developing visual studio c++ application. basically i would like to give memory usage options for the runtime for running my programe? i know how to do it in jave but is dont know how to give for a c++ program? do any one of you know how to set these options? ...more >>

Hi I'm having an multithreaded MFC application with win32 interface VC++ 7. I need to add one more feature in this, so a particular web site can be opened with in a window of this application. I don't allow users to go out of this application so want to use an internal window/frame using d...more >>

Hi Folks! For some reasons, this code: > float tmp = 0.; > for (int i = 0; i < 2000; i++) { > for (int j = i; j < 2000; j++) { > for (int k = 0; k < 9000; k++) { > tmp += tmp_mat(k,i) * tmp_mat(k,j); > } > tmp = 0....more >>

Hi, I have a piece of code in .NET that encrypts a string. The .NET code is quite simple and through the last couple of days I've been trying to build it's equivalent in ATL playing arround with CCrypt classes and I just haven't been able to get it right. So if anyone can help me porting th...more >>

The following code snippet can be build in VC 6.0, but failed in VC 2003. //////////////save the following code in t.cpp #define _MT #define _WIN32_WINNT 0x0500 #include <iostream> #include <process.h> #include <windows.h> #pragma comment(lib,"libcmt.lib") __int64 Counter=0; BOOL volatile s...more >>

Is there any way to create a Microsoft.Practices.EnterpriseLibrary.Data.Database object without reading from a configuration file? I am writing a utility that manages databases in SQL Server. The utility queries SQL Server for the database names. So I don't know the names of the databases...more >>

Hi guys, I'm trying to figure out a way to do reflection on structs which are in a legacy c++ header file. Basically I want to write a C++/CLI program that lets me edit the binary data in the structs, but there are many of these structs so it has to be automated. Also I do not want to have ...more >>

In order to make some very large projects available to other developers who do not use Visual Studio (or even Windows, in some cases), I need to generate standard-format Make files. In Visual C++ 6.0, there was an "export makefile" command on the "Project" menu. Now that I am using Visual ...more >>

Say I have a line in my code something like the following (NOTE: Point is __value class System::Drawing::Point): Point point[] = new Point[3] ; How do I now 'ask' 'point' how many elements it has (in this case the answer is 3)? This does NOT work: int element_count = sizeof(point) ; ...more >>

Hello!! You may correct me if I say something that is not right. If I want to use the .NET framework for an VC6/MFC application I must compile the VC6/MFC to VC8 using the /CLI switch after removing all the errors? The old MFC will work in the new VS2005(VC8) My MFC project consist of ...more >>

Hello! I thought I had strategy clear to me that if I want to use .NET in an VC6/MFC I must use compile in VC8 with the CLR switch. But now I get another answer it says. I asked this question. If I want to use the .NET framework for an VC6/MFC application I must compile the VC6/MFC to VC8 ...more >>

Hello! Is the statements below correct understood. If I intend to use C++ in VS2005 I can either use managed code which is C++/CLI which give me the possibility to mix other language such as C# or VB or use unmanaged code for example using MFC then I can not mix other language. Does VC...more >>

Hi I have a not managed code MFC project in VC.NET and I want to convert it to C# or at least a managed version of VC.NET (if exists) Thank you ...more >>

Hello! I have some questions and I want to be sure about the :NET environment.. Question number 1: Is this right C++/CLI hasn't existed until in VS++ 2005(VC8) Question number 2: When you compile a .NET code the .NET compiler produces Intermediate Language(IL code) and metadata. Que...more >>

I'm learning C++ and was stuck when writing code to convert a negative decimal number string to a hexdecimal number. For example, suppose the function interface is defined as: int atoi( const char*, size_t radix) One input string is "-1234" and radix is 16. How to get the correct he...more >>

I am porting some code form vs2003 to vs2005 - it is unmanaged CPP. The solution consists of several library projects and a console project. The library projects all build fine but when I get to the console appliation, I get lots of errors in stdlib.h - C2733 and C2059 errors. Does anyone k...more >>

I now have graphics being drawn in the Paint event of my form (yeah, and it's very cool). Problem was that it only updated any changes to these graphics when Paint was called. So, I then made it so the Refresh() method of the form was called for each graphic object. In this case it drew jus...more >>

Hello, Does anyone know if the "virtual bool bug" is still present in VS2005 when calling between managed and unmanaged code? Thanks Kevin ...more >>

Hi! I have an MFC application that is under development in VS2003 and frankly MFC seems difficult to use and poorly documented -- I frequently find the only way to get example code is on the Internet, not in the huge, mosly useless "MSDN Library". For example, I was advised to use CStatic ...more >>

Hello, I have started to use managed C++ in VS 2003. I have several .NET class libraries written in MC++. I am finding the rebuild tendencies in VS to be very annoying. If I make a minor change to a C++ file (not header), it causes all depend projects to rebuild. I have not changed any cla...more >>

Hi! I have a strange problem: I need to wrap a C-function in a native DLL into a C#-class. This function expects one C-function pointer out of a set of some C-functions defined in the same DLL. How can I access and pass such a C-function pointer to a C-function out of C#? Thank You! ...more >>

Hi, I am looking to find out how to deal with the BYTE datatype in VC, as used below: This struct is part of the API for a Garmin GPS unit: typedef struct { unsigned char mPacketType; // 0 1 byte unsigned char mReserved1; // 1 1 byte unsigned short mReserved2; ...more >>

Hello! I have this overridden OnPrepareDC and at the end of this method the base class OnPrepareDC is called. If remove the call to the base class this OnPrepareDC work the same. So calling the base class has not affect in this example. If you override the OnPrepareDC is it really necessary...more >>

Hello! The CClientDC class is derived from CDC and takes care of calling the Windows functions GetDC at construction time and ReleaseDC at destruction time. This means that the device context associated with a CClientDC object is the client area of a window. The rows above is from the do...more >>

Hello there, I have a problem with windows form that is Iam trying to create a thread that needs to access my form I defined a member function called func void func() { //stuff this->prop = val ; } then I created the thread in a button_click event like this On_Button_Click(.....) { ...more >>

I can't figure out why this code does not compile - says that 'num' in an undeclared identifier and that 'delegate':identifier not found. Thoughts? Help? void MethodD() { List<int>^ data; BinaryFormatter^ formatter = gcnew BinaryFormatter(); MemoryStream^ stream = gcnew MemoryS...more >>

Thanks to everyone who has helped with some of my elementary questions about C++/CLI equivalents to C#. I have a few more items that are giving me headaches. All help is appreciated. What is the proper way to convert the following? 1) data.ForEach(delegate(int num) { formatter->Ser...more >>

I know that 'stdafx.h' has to do with pre-compiled headers. However, it seem weird that it is a required 'include' in any CPP file, especially since the file itself has no code in it! I know that 'stdafx.h' is a good place to put "include files that are used frequently, but are changed inf...more >>

Hey guys, Quick Question. Lets say Im using the XMLHTTPObject to return an IStream. In General, is it better to return the object as CComPtr<IStream> spIstream; QueryInterface.. &spIstream and not worry about Release, or to use (IStream*)varValue.punkval then use release? I guess the bi...more >>

Hi i am serializing a 'ref struct' object as follows : private: void Seri( String ^path, Object^ obj ) { FileStream^ fileStrm ; try { //Serialize entire object into Binary stream fileStrm = File::Open( path , FileMode::Create ); BinaryFormatter^ binFormatter = gcnew Bin...more >>

I have a bunch of C programs from sun. I would like to port them over to PC. I am wondering if I can simply recompile and run them in Visual C++ .NET without having to making a lot of changes? Specifically how to invoke C run time library from Visaul C++ .NET?...more >>

As all we know, in order to remove cyclic includes in C++ we seperate the declarations and definitions of classs and it's member in two files Header (*.h) and source files (*.cpp). This is not a problem for C# as there is no concept of include. I faced problems for seperating declarations and ...more >>

How would this C# contruct be represented in C++/CLI? Or is it even possible? PolicyLevel level = (enumerator->Current) as PolicyLevel; Thanks, Karch ...more >>

Hi, its a c++ question. If I have the following code: TCHAR * getsomestring() { TCHAR buff[2000]; // here I copy something in the buffer using wcscpy. return buff; } Is this a valid code? I mean I see it as a buff allocated on the stack which should be destroyed on the retu...more >>

I have a plain unmanaged exe (no /CLR) that is supposed to to use classes from a mixed mode dll (dll that uses .NET internally). That dll only needs to expose unmanaged interfaces (classes and/or functions). This is of course no problem and it works fine. However I have the special scenario where...more >>

I am beginning to write my first applications with C++/CLI and was wondering if someone could demonstrate the proper way to convert a sample piece of code. I just need some help understanding the new syntax for handles and iterating, etc. Thanks in advance for the help. SoapFormatter format...more >>

How to disable the intellisense / file parsing in VS2005 (beta 2)? As soon as my header get over a few hundreds lines modifying them becames a pain, VS.NET keeps frozing... (presumably to parse the header). This is insufferable! -- There are 10 kinds of people in this world. Those who under...more >>

I am using some COM interface to create some HFONT. Trouble is, the font created with this COM interface should be release with this COM intrface. And I don't see how I could make it work nicely with my ManagedC++ wrapper. The solution I though of is: when the COM interface create this refer...more >>