I have Visual C++ 2005 express edition, I downloaded it from the microsoft website. I am using it for school. I started an assignment in the lab at my school, and for the asssignment I had to create 3 projects under one solution. They were created no problem, each with just a few lines of ex...more >>

I have a mixed DLL (a managed DLL in C++ calling functions in other unmanaged DLLs) which I can build successfully in Visual Studio 2005 but can't reference as I get then immediately the error: is not a valid Win32 application. (Exception from HRESULT: 0x800700C1) Trying to find out what...more >>

Hi All, I am creating a C++/CLI project which will be consumber by C# application. I have added comments for my properties/Methods in my C++/CLI project using .net XML tags, but when i reference this project in my C# application, i dont seee these comments in the intelisense as well as the A...more >>

Hi All Can we have a internal ref class in C++/CLI? when i try to declare a internal class in my project i get error message internal ref class MyError abstract sealed { public: static List<String^>^ GetLastErrorListEnglish(void); } Error 1 error C2143: syntax error : missing ';' bef...more >>

Hello, Well I am in MC++ .Net 2.0 I want to transform a type lib com to interop assembly. To do that action, I have to load the typelib thanks to the following function. [ DllImport(S"oleaut32.dll", CharSet = CharSet::Unicode, PreserveSig = false)] extern void LoadTypeLibEx(String *strT...more >>

I would like to compose a dll of several static libraries. This is to modularize the code a bit but keep the whole thing in one package instead of having multiple dll's to distribute. Is there any way at all to do this? I can't find any method of exporting a symbol from a dll that is impl...more >>

Anybody here using __event? Could you please discuss any potential issues with it other than portability? Priyesh ...more >>

I spent many hours on this, googling around and experimenting, and still nothing. I wrote an umanaged program (actually various classes), while I was developing them I used command line to test it. Now, I decided to make GUI for it, so I created new project: "Windows Forms Application (.NET)"...more >>

Is there any way by which we can make visual basic C++ compatible with WIndows vista...more >>

Hi all, I have an unmanaged DLL. The entry points in the DLL are declared via a ..def file (which is syntactically easier for me to deal with than the arcane #pragma gibberish). Now I want some of the functions in this DLL to interact with a managed DLL. For performance reasons, I need ...more >>

I have win xp home, automatic updates set for auto at 3:00 am. The download and install happens. (Proved by looking on web update history and in windows directory) however the yellow icon w/ the exclamation point shows up in the tray to manually install the same updates. Also most of the la...more >>

Recently I was on my laptop and it shut down on me, when I tried to reboot, it came up with the error code Failure Fixed Disk, then goes straight to Bios. I can't even get windows to come up at all to try a virus scan or anything. Any ideas????? Also I have Windows XP, and the hard disk c...more >>

Hi, I'm new at Visual C++ and I can't figure out how to change the text property of a label. I'm using a char[] variable that I'd like to assign to the label. Perhaps I should use a System::String^ instead? But when I try that, I get an error that I can't use a System::String^ as a global or...more >>

Hi All, In C++ we could pass a constant reference to a function so that the target function could not modify the objects passed eg. const classA & dummmyfunction(const classB) similar thing was valid for objects passed with pointer to constant objects In C++/CLI is there any way for imita...more >>

Hi, we have a few libraries programmed in C++ which are accessible through C APIs. (There's a C++ API wrapping around one of those C APIs, if that helps.) These are well tested and work for quite a few customers. Now we start getting requests for a C# API. Being a dedicated cross-platform sh...more >>

Hi, I've written one simple windows service using .NET 2003 with Timer. When I install the service on Win XP it works as expected, but on Vista I can see the service getting installed but Timer is not working. Please HELP....more >>

I trying to learn what a Bitmap is. Not a Managed Bitmap Object but one that, for example, comes from the clipboard with CF_BITMAP. I'm guessing that a CompatableBitmap is an array of indices that point to the colors in a Palette of the display driver. So if I get a bitmap via CF_BITMAP I ...more >>

In C#, this is legal namespace MyNamespace.MyApp { } But when I did that in VC++, it didn't compile. I had to change it to namespace MyNamespace { namespace MyApp { } } If the level is more than two, it gets really nasty. Why can't I do it the way I do in C#? ...more >>

I am working on some software which has to deal with data that could be as large as 500mb or so. Currently I am using new[] and delete[] to manage this memory but I find it is not ideal and sometimes gives out of memory errors if I open one large data item then free that data item then another...more >>

Hello, gnu g++ offers something similar to lint/splint for statically checking C programs with the following command: g++ -W -Wall -Wshadow -Wwrite-strings -Wold-style-cast -Woverloaded-virtual -pedantic -Os -fno-exceptions -c does cl.exe in windows offer something similar? Thanks....more >>

What's the best approch to having a common method that takes a collection ( List<> ), goes through its elements and deletes them. public ref struct Struct1 { public: Struct1( ); ~Struct1( ); }; public ref struct Struct2 { public: Struct2( ); ~Struct2( ); }; ...more >>

Please validate: https://connect.microsoft.com/VisualStudio/feedback/ViewFeedback.aspx?FeedbackID=293850 ...more >>

I have this situation where I need to access the #defines and typedefs defined in a C++ header file from a .NET Project (specifically C#). The C++ header file is from a medical device manufacturer which my software needs to communicate with. How can I do this? Please let me know if you n...more >>

I've got code that works when started normally (explorer, command whatever) but fails when started from VS2003. It crashes in different place when started with debugging (F5) and other place when started without debugging ( CTRL+F5). The same code works correctly on W2K/W2K3/XP. All modules ...more >>

I had originally posted this to the comp.lang.C++.moderated group, and was advised to bring this question here. I haven't used C++ in quite a few years, and that was when I was learning and made only console applications, but I remember the .h files only had the function declarations, and th...more >>

Hi, I need to access methods from a C++/CLI class in VB.NET . How can I do that? Is should be something along the lines of "registering" the C++ program with the .NET framework and then probably adding a reference to it from my VB code... But I'm not sure how I can do it and I don't have...more >>

Hello, I've got what I'm sure are some dumb questions. I've got some existing C++ code that I want to move to a C++/CLI assembly to make it easier to use in a ..NET app as well as continuing to use it in an existing C++ app. It's simple code, but I'm not sure if I'm setting up my function d...more >>

I have never been so embarassed! :-) I have played with C++, and even created a few simple programs, but decided to learn it properly. So I crack a book, get into Visual Studio and follow the instructions to create the following program: // HelloWorld.cpp : Defines the entry point for the...more >>

Hi, sorry if this is not the best group for this... In C# I have string values that correspond to enum member names. I need a conversion from the string value to the corresponding enum value - if possible without a big switch comparing the string with all their enum string literal represent...more >>

I'm trying to create a pointer to a class in form1.h button1 event handler. It should be simple... but no. This example is as simple as I can make: Form1.h (produced with the designer containing a single button) **********************************************************************************...more >>

We have an application that is running fine on several of our customer’s servers. However, one of our customers is having a problem running the application. The application works on one of his Windows 2003 servers, but not on the other one. The application is a C++ .Net /clr Windows Ser...more >>

Hi all, I build my project on VS 2005 and get this error: c:\dx90sdk\include\strmif.h(27392) : error C2146: syntax error : missing ';' before identifier 'lpSurf' can you help me how to fix this? Thanks for any help. ...more >>

Hi, I would like to enable my VC++ application to capture general mouse and keyboard events (click, double-click, key press) that occur outside of my application's frame (eg. clicking inside the frame of another application). I'm quite sure this is possible, but I don't know how to do it. A...more >>

Hi, the project we are working on uses "int" for all integral type data (i have also declared size_t at some places where crt functions return size_t type). Now our application has to deal with files larger than 4gb. Typical places where my code will have to deal with more than 4gb data/figur...more >>

I am working on a project that currently has some interfaces and enums defined in an IDL file. The sole implementor of these interfaces are now in C++ CLI, but I still have consumers that are in unmanaged C++. I would like to move the interface and enum definitions to the C++ CLI code, but I ca...more >>

I am trying to initialize Direct3D 9 in a C++/CLR application. However, the create device function gives me a compilation error: error C2664: 'IDirect3D9::CreateDevice' : cannot convert parameter 6 from 'cli::interior_ptr<Type>' to 'IDirect3DDevice9 **' 1> with 1> [ 1> Type=IDirect3DDevice9 ...more >>

My WMP 11 was working just fine, then the automatic security updates installed KB835935. Media Player now stops playing audio and closes down after a few seconds. I did a sys restore, didn't help. I uninstalled KB835935, that didn't work either. I uninstalled a few programs that KB info ...more >>

I'm using Visual C++ Express 2005. I get an error when I try to compile code with both /arch:SSE and /clr options. cl : Command line error D8016 : '/arch:SSE' and '/clr' command-line options are incompatible Why is happening? According to the documentation it should be possible (of course S...more >>

Can any one tell me how to resolve this issue; I have the following function //hello.cpp #include "stdafx.h" #include <stdlib.h> #include <vcclr.h> #include <string> namespace Wrapper { String^ Wrapper_Class::sayHello(void){ String^ str="Hello"; return str; } } //hello.h #prag...more >>

Is it possible to have a project that has COM classes as well as ANSI C++ classes in the same project (i.e. Dll) ?...more >>

Hi All, We have a large multi project application in MFC that we are converting to managed code. We have been able to add /CLR to all of the projects and have compiled successfully but encounter an exception when loading one of our Extension DLL's. 'OurApp.exe' (Managed): Loaded '...\Debug\...more >>

Hello, dear all, CLI/C++ and C++ have many common things and differences. If I want to porting or wrapper some API from C++ code to CLI, I wonder is there some good rules or proposal to make the this more reliable. Is seems there are not such this document posted in the web yet. ...more >>

Hi, dear all, Now there is a issue to convert C++ into CLI/C++. But there is a issue block me. Say Class MN is multiple derived from class MM and NN. But the CLI only allow single class derived. My understanding is to create a new interface INN with same method declaration with class NN. ...more >>

Hi All, i did compile my project on VC 6 without winsock6.h problem but if i port to VC2005 then i get this error when compile: Cannot open include file: 'winsock6.h': In Tool->Option->VC++ Directories-> Include Files of VC2005 , i added: $(VCInstallDir)PlatformSDK\include and D:\Prog...more >>

Hi All, Newbie to .NET VC, I have little experience to use VC6. ( WIN32 , not MFC ) Is MFC still existed in .NET ? Tell the truth, I have same problem when first time to use VC6, I don't know where should I add my code...., is it the same as Form_load (), by the way, the architecture ...more >>

Hi all, I have a project that compile without error on VC 6 (XP Pro service pack 2 ) but when i port to VC 8 (2005) then have error during compile as below: //-------------------------------------------------------------------------------------- Compiling... Myfiles.cpp D:\vs2005\Myproject\...more >>

Hi all! I am a beginner to C++ DotNet and I would like to ask what "Symbols not loaded" means and how to solve this problem. Thank you very much. Gernot...more >>

Hi, dear all, Here are some questions when I was writing CLI code, which would be used by C# Project. 1. Reference Parameter If CLI method have % reference type parameter, which is ref class, could C Sharp use it? In CLI code: ClassA::SetB(ClassB% classB); In CSharp: ClassA clas...more >>

Hello everyone, I am wondering whether Microsoft Excel 2003 is a native application or dependent on any .Net Framework Runtime, like 1.1, 2.0 or 3.0? How about Microsoft Excel 2007? thanks in advance, George...more >>

Hi, I want to Enable/Disable USB drive programatically. I dont to use devcon.exe. If anyone knows some API please tell me. Thanks in advance. -- Sharda ------------------------------------------------------------------------ Posted via http://www.codecomments.com -------------...more >>