hi !! i have i function pointer that i declared in unmanaged code: void (*func_ptr)(); and i have a managed class where i need to assign a pointer to this function pointer and then call it. check out this code: ref class MyClass; // forward declaration void Func() { MyClass::MyS...more >>

My program gets a WM_QUERYENDSESSION message and asks the user if it is OK to shutdown. While he's thinking about it, Windows displays a box saying the program is not responding. If the user clicks Cancel the shutdown is canceled. My program receives a WM_ENDSESSION message and tells th...more >>

Hi all, I am trying to connect to a electromyograph machine for my thesis project, and I have a VB DDE client whose DDE functionality I want to convert to VC++. However I can't make my VC++ version connect to the DDE server somehow -- DdeConnect(idInst,hszService, hszTopic, NULL) is not wor...more >>

I have a question about the file Open dialog box. I would like to be able to make the dialog box bigger by selecting the bottom right-hand corner and dragging/expanding the box. I am told by my colleagues that this is not "standard" but find it hard to believe. Opening a file in MS word ...more >>

Is there a method of finding out which dll's are being used by an exe if yes how? regards Abhi ...more >>

Hi, I installed Visual Studio 2005 SP1, my application does not start on machines without Visual Studio installed any more. It was working without SP1. After searching the web, it seems caused by manifest file, I changed link option to generate external manifest file. The manifest lists...more >>

I am trying to figure out how to implement WCF under C++/CLI. Most examples involve C# code. For instance, an interface is defined like this: interface IMyContractCallback { [OperationContract] void OnCallback(); } [ServiceContract(CallbackContract = typeof(IMyContractCallback))]...more >>

I have a std::vector< ICMP_ECHO_REPLY > container that I'd like to be able to do such wonderful STL operations as max_element(), accumulate(), greater_equal(), etc... So, I decided I would create a class to contain that information and overload the necessary operators. The idea is that I shoul...more >>

I need to build a managed DLL in C++ and call it from C#. I need this to work with remoting as well. In C#, class objects are reference types, so if an object is passed directly to a C++ method it is considered a reference to the object. C# call: i = some_method( some_object ); C++ m...more >>

Hello, I am working on a Windows Forms Control Library which has some unmanaged code in it. What is the equivalent of "C# null" in managed C++? CUnmanagedClass *pClass = NULL; ManagedClass^ aClass = ?; I want to check if aClass has been set. Thank you! ...more >>

Hi can i call a constructor of a class, if the name is stored in a CString Object e.g. class CBaseClass { int x; }; class CDerClass1: public CBaseClass { int y; }; class CDerClass2: public CBaseClass { int z; }; CString strClassName; // = L"CMyClass";//using unicode chars...more >>

What's the best way of implementing a multi-node tree in C++? What I'm trying to do is traverse a tree of possible chess moves given an intial position (at the root of the tree). Since every chess position has around 30 moves, it would mean every node of the tree would have 30 branches (on ave...more >>

I'm converting some C++ code to VC++ 2005 in native (non-managed) mode. This code doesn't use ATL, but codes the COM mechanisms directly. It has a class which is the equivalent of ATL's IDispatchImpl: template<class T> class CDispatch : virtual public IDispatch, virtual public CUnknown, ...more >>

How do I include a double quote in a string displayed on the screen? I tried: wsprintf(szBuffer, "%s's ""%s"" preferences retrieved" But no quotes showed. Thanks ...more >>

Hello, We have a situation where a managed C++ assembly links with native C++ dll. There is a callback mechanism which calls back into the managed code asynchronously. Since native classes cannot hold onto a managed reference, we need to have a managed static member which we access during the ...more >>

Hi, I log in as a administrator, then compile and run the following code on a computer: #include "stdafx.h" #include <windows.h> int _tmain(int argc, _TCHAR* argv[]) { long l = ::RegLoadKey(HKEY_USERS,L"XXXX",L"D:\\NTUSER.DAT"); return 0; } I get a 1314(A required privilege is ...more >>

I am in the process of converting a Visual C++ 6.0 project to Visual Studio 2005. The conversion is almost complete, but in the linking phase, I get the error: LINK : fatal error LNK1104: cannot open file 'mfc42d.lib' It seems to be looking for a file from Visual C++ 6.0. I have checked ...more >>

Hi, I have some code like this.... MyObject ^o = gcnew MyObject(); My2ndObject ^obj2 = o->GetObject(); if( obj2 != NULL ) { //... do stuff } when i compile this I get an error(C2446) no conversion from 'int' to 'My2ndObject ^' no user-defined-conversion operator availabl...more >>

In my old .NET (2002), I have the help's index and search as tabs along with the solution explorer docked inside the visual studio (and help docs selected therein show in the same interface as my program sources). Is there a way to do that (and avoid the "document explorer") with VS8? Thanks. ...more >>

I'm compiling a dll that imports msado15.dll. When I'm using Windows in English, the msado15.dll is located at <drive>:\Program Files\Common Files\System\ADO\msado15.dll". When using Windows in Portuguese, the msado15.dll is located at <drive>:\Arquivos de programas\Arquivos comuns\System\ADO\...more >>

I was able to solve the problem in vc++5 by changing the vc++ settings. ButI can't find the same options in vc++ 2005. I have a lot of big arrays! "Unhandled exception at 0x0040c247 in jan7.exe: 0xC0000005: Access violation reading location 0x00030000." ...more >>