Hi, I need to make a function that can display data on my Managed C++ app and be called by an unmanaged C++ DLL. Something like : void Form1::Form1_Load(System::Object * sender, System::EventArgs * e) { MyDLLInit(MyAppDisplayFunction); } void Form1::MyAppDisplayFunction() { ...more >>

Hello, I am trying to use visual c++ express to write opengl programs for a class because I don't have the full visual studio program. However, when I downloaded and installed visual c++ express beta2, the include files in "C:\Program Files\Microsoft Visual Studio 8\VC\include" do not includ...more >>

Hi, We have few MFC 6.0 applications that are using many static libraries that are basically our infrastructure. Now we want to develop in C#, and we don't want to redesign all the infrastructure, that basically the libs are also using dependencies between them. From where to start ? and sugg...more >>

VC7.1 changes the __FILE__. In vc6, the __FILE__ returns the [full path name of the file]. However, in vc7.1, the __FILE__ just returns the [.\file name]. It looks like vc7.1 changes a lot of things which makes it quite difficult to migrate vc6 code to vc7.1. I am a little bit disappointed ...more >>

Hello, I am developing an SDI application, based CFormView. I would like to prevent the user from moving the window around. How do I do that? Eitan...more >>

Hi, I have a VC7++ VS2003 program that uses CRecordSet to write one record to a SQLAnywhere database via ODBC, a Code Sniplet is contained below, on most machine running the same OS and Build it works flawlessly, however on this one XP Build 5.1 SP@ machine it never ends up writing the recor...more >>

HI I'm a C# developer and unfortunately I have to write now some code in managed and unmanaged C++. In this area I'm Newbie and therefore please forgive me if this is a really simple question. 1) I have two classes defined in two header files, it is possible to have a member ...more >>

Hi, How can I easily use char strings to display text in listbox. I need to do something like: char MyText[] = "The text"; MyListBox->Items->Add(MyText); Thanks, Hugo...more >>

Hello, I am trying to create a c++ dll or lib (not COM) that contains a little bit of managed code and a lot of unmanged code using c++/CLI. Basically some classes rely on managed bits internally. But nothing of that managed stuff will be exposed to the outside. The user of that dll is su...more >>

Is there something about C++ / C# interop that initializes the threading model to MTA so that OleInitialize will fail? I have a mostly C++ app that calls a single C# class DLL. Only one source file in the C++ app is compiled as managed (with /clr) – the single file in which only one of th...more >>

All, How can I supply a C++ function callback pointer to an unmanaged DLL and have it call back into my managed code? TIA Bill ...more >>

Hi! I'm trying to start a process with different credentials. But I cannot even compile my code as the compiler (VC++.NET) says "error C3861: 'CreateProcessWithLogonW': identifier not found, even with argument-dependent lookup". I have included the following headers etc, which I belive s...more >>

Hi all; I have a client/server application that are built in VC .NET. The source codes are versioned in Perforce. I need automate the process to: Setup environment variable, Check out latest changes, build Client/Server projects, copy files to desired location, and so on. Anybody can give...more >>

I'm trying to expose a typedef from an assembly in a managed C++ code and cannot seem to make it work. See following code below: namespace MyTypedef { public __gc class MyClass { public: bool b() {return true;} }; typedef MyClass NewNa...more >>

sorry, could someone read my query regarding borderless windows - about 6-ish posts down. i didn't originally mention i was using vc v6. thanks....more >>

Hi all, I'm trying to write an overloaded operator for unary negation e.g., MyClass a(5); MyClass b(0); b = -a; Here is my class implementation: public ref class Angle { double radianValue; // value of the angle in radians Angle():radianValue(0.0){}; Angle(doubl...more >>

I'm trying to co-erce a __gc array of Byte to a __nogc pointer to char to pass to a native function call in a bit of managed c++ code like this: Byte field __gc[] = dynamic_cast<Byte __gc[]>(record->get_Item(i)); .. .. .. Byte __pin * p = &field[0]; // << this is the proscribed way to...more >>

I am writing a service. Before exiting the ServiceMain(), I want to call SetServiceStatus(hServiceHandle, SERVICE_STOPPED) to set the service status to SERVICE_STOPPED, but the SetServiceStatus() function crash immediately. For example: ServiceMain(...) { SERVICE_STATUS MyServi...more >>

i really need to create a window/dialog that just contains a bitmap and nothing else - no window frame, caption or buttons, or any sign of a grey background. so far ive only managed to get rid of system buttons and frames, but i still can't get rid of a grey border that windows insists on sho...more >>

Hi everyone I have a problem with Iterators and Containers in STL that hopefully someone can help me with. This is what I try to do: I have an associative (map) container and I have a function where I with the help of iterators want to search through the container and remove a certain object...more >>

I have a set of unmanaged c++ classes that internally need to use managed classes (WPF formerly know as "Avalon") but I do not want to compile the whole MFC project with the /clr switch. What options do I have in that case? Could I a) swap out all the classes that need to use managed classes ...more >>

All, I cannot find any examples of doing Excel automation from a VC++ .Net environment. Does anyone ay least know what the namespace should be to expose the Excel app? i.e. using namespace System::????????????????? TIA, Bill ...more >>

[ Microsoft Visual C++ .NET 69586-335-0000007-18332 ] Hi, I'm not sure this is the right place to report bugs in MS Visual C++ .NET 2003. I posted the same message on MSDN forums (http://forums.microsoft.com/msdn/ShowPost.aspx?PostID=95745). In any case, the code below causes the fol...more >>

I've had to write a lot of code to interface C# to older Win32 DLLs. Basically, an unmanaged C++ class talks directly to the Win32 DLL. A managed C++ class encloses the unmanaged C++ class. C# talks to the managed C++ class. Lots of work. Is this simplified in C++/CLI? Any sample code anywh...more >>

Hey, How can I assign 'null' value to a handle in C++/CLI? I searched for this for some while now, finding nothing so far. In C# I could write: something = null; or if ( something == null ) ... However, C++/CLI does not understand null. NULL is not defined, and it shouldn't be. ...more >>

Hi I'm compiling some code and need to generate some random numbers. To save time, I decided to use the srand, rand and time functions. My code worked (atleast built fine) until I added time.h, then the compiler (VC7.1) barfed up this lot: c:\Program Files\Microsoft Visual Studio .NET 20...more >>

Hi all! I understand the rationale behind the warning 4239 (I think :-)) (warning C4239: nonstandard extension used : 'argument' : conversion from X to Y A reference that is not to 'const' cannot be bound to a non-lvalue; assigment operator takes a reference to non-const) However, in this s...more >>

Hi, As a newbie to .Net, I am interested in wrapping a library's C functions to be accessible from .Net. These C functions take strings as input and output parameters and may reallocate strings internally if they need to be extended. It appears that there are (at least) 2 ways to wrap my C...more >>

Hi all, Just wondering if there is any way to return a vector from a mixed mode dll? I understand that it is quite easy to pass by reference to achieve the same end, but i'd like to know if it is possible to return a vector. Cheers, ...more >>

Can anyone talk me is there existed a "default" value for a un-initialized int variable in a release build in VC6 and VC7.1. (I know there is a compilation warning) For Example: main(){ int a; printf("variable 'a' is un-initialized and its value is = %d\n", a); } I want to know wheth...more >>

Hello, I am currently converting a series of ATL COM DLLs that have previously been built with VC++ 6 to VC++ .Net (7.1? using VS.Net 2003). In any case, I am encountering the linker error: """ Objects warning LNK4243: DLL containing objects compiled with /clr is not linked with /NOENTR...more >>

class Party{ public: double averageNames(int n, int personA[], int personB[]){ vector<set<int>> personsKnown; //vector< set<int> > personsKnown; } }; int main(){ Party p; return 0; } can anybody plz explain me why the code dosn't compile on msvc6 wheere as the ...more >>

hi all, i have a project in msvc6 and i want to change the name of the project from existing to some new project. how can i do the same. what entries in the .dsp file i have to change to chagne the name of the project. thanks rt ...more >>

Hello, is there a function to abort the running thread (thread-a) from another thread (thread-b)? thanks....more >>

I'm new to this list so please forgive in case this is not the correct forum. If so, please let me know to where I can direct bug reports for vc. The following crashes using whole program optimization (i.e. invoking LTCG) under vc7.1 Professional. #include <string> #include <boost/functio...more >>

Hello, I have a managed type that defines an Event as one of its public members. Is it possible for an unmanaged c++ class to register to that event ? How can an unmanaged classmethod be called as a response to a raised event ? Within my unmanaged class I tried to following: void MyUn...more >>

Form Takes a Long Time to Open when switching from code view to design view. This bug is discussed in this article: http://support.microsoft.com/default.aspx?scid=kb;en-us;901374 I believe I am having the exact same problem. The problem is that I have to contact Microsoft Tech Support to ...more >>

Try to compiler and run the following code in DEBUG mode, an assertion dialog will be popped. Can I ignore this assertion dialog and why does this code cause to an assertion? -- int _tmain(int argc, _TCHAR* argv[]) { char c = -3; if(isdigit(c)) { puts("Character '-3' is a digit");...more >>

I am trying to create a managed c++ wrapper and have run into a problem is when SetNewNetworkCallBack is run. It doesn't like that NetworkID isn't an UInt16. I get the error: CCommManager::SetNewNetworkCallBack' : cannot convert parameter 1 from 'void (unsigned short,void *)' to 'void (__...more >>

Hi, I have created a very small test wrapper class in Managed C++ which wraps up some very simple native code. I am using C# 2 + Visual Studio 2005 Beta 2. I have the back end C++ library without CLR which is to be wrapped that outputs fine to a static .lib as expected. Then I import the...more >>

I have a project that contains a COM object running in the in-process configuration. The project was developed by VC6.0 with SP 3. The project has been put into production for long period of time and it worked just fine. Right now, I want to migrate the project to VC7.1. During the migration, ...more >>

Hello to ALL, I'll explain my problem by pseudo code class A { int x; char y; string z; } class B { GetVariable(int i) { A a = new A(); //Now I want to return the ith varaible //of class A } } class C { GetVar() { B b = new...more >>

Hey, I'm trying to write a file with unix-style newlines (ASCII character 10) from a c++ program on Windows...it seems that the most straightforward way to do that is just to print ( char )10, but it seems that when I try to print that to the file, the program still prints the full CR+LF Windo...more >>

I have a mix-mode Managed C++ dll which wraps some C++ static library and exposes functions to C# IRTDServer. So the scenario is like this: C++ Static library (with static member variables in classes) | | v Managed C++ dll | ...more >>

Hi everybody! I am just trying to switch from C++ 6 to the C++.NET and face an immediate problem I cannot tackle. Please help! I created a new VC++ standard SDI project in the Visual Studio .NET 2003. Now I want to have a bitmap on the background of the mainframe window. So, I added to the ...more >>

hello everyone, wat is .net framework from MS? wat is supposed to do programming world? any easy & meaningful explanation? thanx, _MrM_ ...more >>

Hi, I am a C/C++ developer of quite a few yesrs, although I am relatively new to Windows (Unix background). I am about to begin work on a project that would require me to develop several GUI rich frontend applications. I would like to hear from developers ou there if there is a book they ...more >>

Hi, How do I set the icon of the .exe file created by a Win32 Console project? Thanks....more >>

I have Visual C++.net V2003. I would like to load in an animated GIF file and display it (animate it). How would I do that in C++, is there a MFC that displays animated GIFS ?? Thanks for the help. Mike...more >>

Hello to all, I want to know that wat's the future of vc++.net? I mean is it going to remain there or not, and if does then wud there be big changes to it or they'll stick with the current one? I want to know this because there is client/server application that i want to build. Now the serv...more >>