Hi.. someone built app. with VC++.NET .. But It cause error on Windows 98 SE .. No one can correct the error. So I would like to downgrade the app to VC++ 6.0 .. The application should be complied with VC++6.0 again.. How can I do this with smart ?.. TIa ...more >>

"The benefits of running code in the managed environment of the CLR are legion. For starters, as the JIT compiler converts CIL instructions into native code, it enacts a code verification process that ensures the code is type safe." What does it mean by "type safe" here? Please give example ab...more >>

Greetings All Can anyone suggest a good book/books for a beginner in VC++.net 2003? Thanks Trevor...more >>

could anybody help me if I can use VC++ to access graphic object created by 3ds max,auto CAD,SolidWork,and how thank you in advance[quote:a39b0bff4c][/quote:a39b0bff4c] ...more >>

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Hi, what is the syntax for passing a pointer to a managed array of pointers in C++.NET ? Here's what I try : void GetArr(Person ** parr __gc[]) ==> compiler error { *parr = new Person* [2]; } main() { Person *p __gc[]; GetArr(&p); } thanks Christian ...more >>

I want to set a big memory range (size=0x10000) with 0xff. How can I do it when debugging? Thanks ...more >>

OK, I just installed the tools refresh in VC++ 2005 Express Beta1, and now it can indeed be called a Beta. I decided to check the ref types on stack thing, and after some seconds of effort I came to this: int main() { using namespace System; String s="Hello world"; Consol...more >>

Following code works fine, when compiled with VS 6.0, but not anymore when compiled in .NET. What's wrong here, I can't see it by myself? arrString content will be garbage with .net compilation, but when compiled with 6.0 it contains string from Vector (that's how I want it to work). std::vecto...more >>

I put VC6 in explorer 'send to'. When I send a C language console app to VC6, just choosing default answers results in a working executable. What is a straight-forward way to build a simple console app with later VC editions? ...more >>

I can't create a Constant/Read-only array field in managed C++ classes - doesn't allow the keyword const pointer to const object on array fields in managed C++ classes. e.g. Want to define a read/only field for an empty array (so all the empty arrays of the given type can use the same object) ...more >>

Hello, Folks, I am new to VC++ and I just added a form to my application. The GUI has a group of checkboxes, a combo box, a text box and two buttons. Will someone please walk me through getting the form to load and displayed on my screen? I greatly appreciate the help. jazz ...more >>

Hi, With COM, I was able to create an object supporting various interfaces, and by overloading QueryInterface to decide at runtime if the interface beeing queried was actually available (given the current state of the object) or not. Is there such a possibility with managed .net classes ...more >>

Hi, After converting String* to Char*, I need to call Marshal::FreeHGlobal(). Fine. But I need pass this Char* to an unmagaed C++ class and the managed C++ class is not possible to do Marshal::FreeHGlobal() any more. What should I do? delete Char* in the unmanaged class? Thanks ...more >>

Compiler Error C3222'parameter' : cannot declare default arguments for member functions of a managed type Arrrgggghhhhh!...more >>

Hi, What does the "overlapped" word means in windows programming? I've read about overlapped structures, functions?! What does it mean? Thanks!...more >>

is that possible from a C++ app? thank you. -Greg ...more >>

Hi, Can anyone help me, please? I have to read from some device through a serial port. I am writing a program in C and I have to set baud rate 2400, transmit bits 8, parity none, stop bits 1 or 2. I used some open source code to do this but I can't link termsio.h. How can solve this pro...more >>

I have a mixed mode dll with a garbage collected interface. The interface is garbage collected because my derrived class has managed member variables. I am trying to return a pointer to my interface using GetProcAddress and calling an exported function which instantiates and returns my derri...more >>

Hello, I am wondering how it is that all of the windows base dlls, like kernel32.dll specify that all of their functions are __stdcall and yet the exported names from the dll are not decorated with the preceeding underscore and following @ parameter byte count. When I export a function from...more >>

(Type your message here) Hi, My app (DLL) that was developed in VC6 is using ddao35u=2Elib to= access the Access Database=2E When I try to build the same DLL using VC7 I get the following= linker error=2E Any pointers on how to resolve this? Thanks! Deepa error LNK2019: unresolved e...more >>

I'm trying to call the GetCurrentThread API function from a managed C++ app, but for some reason it always returns a null handle?! And calling GetLastError (or Marshal::GetLastWin32Error) returns different values depending on where I put the code. For example: The following is the code that...more >>

Hi, to create an array of 2 objects (e.g. of type '__gc class Airplane') I need to do : Airplane * arrAirplanes __gc[] = new Airplane* __gc[2]; arrAirplanes[0] = new Airplane("N12344"); arrAirplanes[1] = new Airplane("N12345"); Actually, I create an array of Airplane-pointers first and t...more >>

I have tried every Windows API that I can think of to get the Tooltip message that pops up from the tooltips_class32 window class but without success. I know it can be done because SPY++ can retrieve them when they are visible. Does anyone know how SPY++ does it or how it can be done? Than...more >>

I'm converting a project from MC++ to C++/CLI but can't figure out how to convert this overloded property: __property void set_Item(String *key, Object *value); __property Object *get_Item(String *key); __property void set_Item(String *key, int index, Object *value); __property Object *get_I...more >>

I have an application in which some unmanaged classes are being pulled into a Managed Windows Form application. The umanaged class has a number of CString variables. When I link the program, I get the following error: LINK : error LNK2020: unresolved token (0A000039) ATL.CStringT<char,StrT...more >>

Firstly, to get msvcrt.lib, install the .NET framework SDK. The version of msvcrt.lib included there is the exact same one as comes with Visual Studio ..NET 2003. There are some other things that might be usefull (e.g. the debug version of msvcrt.lib) but msvcrt.lib is the most usefull thing....more >>

In order to protect software from being copied without licence, I would like to use something like a key, which fits only to the current system. The serial number of the CPU or the current operating system would be appropriate. However, I do not know how to retrieve the information. Could you ...more >>

Shortly, the Visual C++ Tools Refresh will be available on the MSDN Visual C++ devcenter. You will need to have installed the Visual Studio 2005 Beta first. <http://msdn.microsoft.com/visualc> I have been talking about this a lot over the last two months. All of the features that are missing i...more >>

In some of the development computers the COM DLLS with managed extension turned on (even though there are no .NET projects in its add reference) is not able to register. regsvr32 hangs up, it does not even return a failure message. It starts registering as soon as I turn off the managed extensio...more >>

Hi, I've posted earlier a question regarding the call to GetCommState. Here is the code for the function. The problem is that GetCommState always returns false!! Why? void Open() { // the DCB and COMMTIMEOUTS structure are declare a __value struct DCB *dcbCommPort = __nogc new DCB(); ...more >>

I am looking for a way to build a Visual C++ import library for a .DLL I dont have source code to. How can I do that?...more >>

I'm trying to create a hybrid Managed/unmanaged C++ DLL that uses ATL and wraps some of DirectShow. When I add a reference to that Managed C++ DLL in another managed project, I end up "polluting" my namespaces will all sorts of unmanaged stuff I didn't want the DLL to export. For instance, ...more >>

Hi, How can i specify the return type of a function returning a managed array of chars. If i try to write: "char __gc[] func()" i get an error! How can i do that? Thanks!...more >>

Where do the values for $(VCInstallDir), $(FrameworkSDKDir), $(FrameWorkDir), $(FrameWorkVersion) and $(VSInstallDir) (and any I have missed) come from?...more >>

In my program, I should be able to access URL using the code in VC++/VB. I would appreciate if anybody can provide a sample code. -- ssunderk ------------------------------------------------------------------------ Posted via http://www.codecomments.com --------------------------------...more >>

Hi, Still having problems with converting my VC 2003 project to VC 2005 beta, this time with events (using the new C++ syntax). My class defines the following event: event PropertyChangedEventHandler ^ PropertyChanged; (it uses the System.ComponentModel.PropertyChangedEventHandler dele...more >>

Is it possible to use vcbuild with the free MS compiler toolkit, as in can someone with just the MS toolkit and no access to a copy of Visual Studio itself use vcbuild to compile a Visual Studio .NET 2003 project? Assuming it is possible, I can then work on getting my specific project to co...more >>

I am starting up Visual C++ .net 2003. When I load any project, it dies with the following error message: Runtime Error ! Program: ...Microsoft Visual Studio .NET 2003\Common7\IDE\devenv.exe This application has requested the Runtime to terminate it in an unusual way. Please contact the...more >>

Hi, if have a __gc class with a datamember of type : a pointer to a DateTime, but I get a compiler error : __gc class Employee { public: DateTime * m_hiringDate; ==> error : cannot declare interior __gc pointer or reference as a member of 'class' Employee(DateTime * hir...more >>

I am trying to create a property which returns an enum. The following class does not work, can someone fix it? I am using VS2003 C++ public __gc class Drive { public: Drive(){} __property DriveType get_DriveType() { return _DriveType; } // This is the enum type __value...more >>

Hello, I have the following problem: I have a class deriving from ICustomTypeDescriptor: public __gc class TPropertyBag : public ICustomTypeDescriptor { private: ... public: .... virtual String* GetClassName(){return TypeDescriptor::GetClassName(this,true);} //[LINE 27] .... };...more >>

(apologies for the new thread - for some reason google news doesn't give me the option to reply to an earlier vcbuild.exe thread) I'm trying to build a C++ project that was originally created in MSVC.NET 7.1 by using MS C++ Toolkit 2003 and the vcbuild.exe helper app. I did have MSVC.NET in...more >>

The MSDN techdocs are somewhat limited on this and I wanted more information. Is there any resource that says definitively which is faster /O2 or /Ox and by how much?...more >>

Hi, I've just installed Visual Studio 2005 and recompiled two existing projects previously compiled with VS 2003. The first project is a un-managed DLL and the second one a managed DLL making use of the un-managed DLL. The project was linking fine with 2003 (I had to add msvcrtd.lib though,...more >>

My application is an MDI. It has an MDI window (main window). Now, I want to create a nother MDI window CMDIFrameWnd *main = new CMDIFrameWnd(); main->LoadFrame(IDR_ANALYSE, WS_OVERLAPPEDWINDOW | 32768, NULL, NULL); main->ShowWindow(SW_SHOW); Now, i create several child window in new MDI wi...more >>

Hi, are managed arrays of value types created on the managed heap, just as are managed arrays of reference types ? String* StrArray[] = new String* [5]; // Arrays of a Reference type int NumArray __gc[] = new int __gc[5]; // // Arrays of a Value type So both 'StrArray' and 'NumArra...more >>

I have a network stream which I got from HttpWebResponse and does not support seeking, How do I find the length of the network stream? HttpWebResponse* response = dynamic_cast<HttpWebResponse*> (request->GetResponse()); // Get...more >>

Can someone explain, please, why it takes for a vc++ project (form application) comprising three forms about four miniutes to load at 100% CPU usage? When it finally loads and I want to run the program, the compiler recompiles all the files (about 50 of them), despite the fact that the program...more >>

I'd like to purchase a copy of Visual c++ ver. 6. Can a Msft rep who reads this message please send me an e-mail or respond to this post? Thanks!...more >>