hello cWorld I want to write code in VC7 , but that should run for both the operating systems windows 2000 and windows CE. Actualy I want to keep two different statements of code for these OS. I want do it by putting then under IF ELSE statement. Is there any way to do this. If any one can hel...more >>

Hello! If I select an item in a tree - and disable the whole tree - all the items in that tree is "grayed". How can I avoid that? This is how I would like things to work - only one item should be grayed - and I should not be able to click on this tree. -- - Lars ...more >>

The old one, not the .NET version. I don't see it listed, but since it's available under .NET I thought I'd ask. Also, there are some API calls which are supposedly not available under most Windows installations (CryptBinaryToString, for example). I don't suppose this has changed? Basica...more >>

Hello, I'm interested in the internal organization of CArray, especially the execution time for the members, the operator respective: Determines the use of [] in constant time (O(1))? What about the members RemoveAt() and InsertAt()? Are they executed in linear time (O(n), if n is the number ...more >>

Hi, In VS 6 you could get the real filename of any source file or project by clicking the right mouse key and selecting "properties". Is there any equivalence in VS 7.1 for that? (so far I have not been able to find any possibility to get the filename of a project or source file). Than...more >>

The following program will result in a compile error when building under Debug but will compile under Release. Why does is work under Release mode but not under Debug This program is developed under Visual Studio .NET 2003 in a Win32 Console Project // VectorInsert.cpp : Defines the entry point...more >>

I'm new to Managed C++ development, and I can't seem to get started. Every time I try to include vcclr.h I get bizarre compilation errors. I've isolated this to a really simple case: In Visual Studio .NET 2003, I do the following 1) File->New->Project 2) Visual C++ Projects->.NET->Win...more >>

I have nearly finished a new application and we want to protect our investment. We have purchased the commercial Dotfuscator and have learnt how to use it. What is the best way to implement product registration? Is there an example around? I have read that some people are using the HD Vol...more >>

Hello NG ! Iam developing in C# so my cpp knowledge is limited. Ive downloaded a C++ sample wich is doing some AD Job. U can get it here : http://support.microsoft.com/?id=302515 Ive tried to port into C++ (.Net) and ran into errors wich i have no clue whats this is about. After compiling ...more >>

Hello everybody Can any one tell me how to develop windows nt/2000 service component which does some monitoring (any work. I would like to use vc++ 6.0 and AT Thanks in advance...more >>

If I want to use C++ Interop/IJW and I want the .NET runtime that I get to be STARTUP_LOADER_OPTIMIZATION_MULTI_DOMAIN_HOST is there a way to do that short of writing to the hosting interfaces and starting up the CLR myself? Seems like controlling this sort of thing should be possible through t...more >>

Hi all, I'm trying to override Form events (for example OnClosing or OnClose) with the intention of preventing the base class function from happening. My functions are getting called but so are the base class ones, which isn't what I want (for example, I was hoping an empty OnClose event would...more >>

How can I mesure string width in pixels? I found : Graphics.MeasureString Method. It is in System.Drawing namespace. I need to use it in static library. Well, class Graphics does not have any constructors (at least in my MSDN). So, if I can't use System::Drawing::Graphics::MeasureString in st...more >>

I have an older MFC C++ app with some new Managed C++ being thrown in. Recently I turned on the /clr flag for one of my old .cpp files. I then placed '#pragma unmanaged' just below my #include statements near the top of the file. These headers contain older unmanaged class declarations. When runni...more >>

I have done some vc.net programming as part of a college course. However, all of it was based on console based apps. Could someone recommend a good book or site that focuses on vc++.net prog. for windows. Also, from your experience, how much tougher is windows prog. using vc compared to c#. Is ...more >>

I have a header that is included from some files that use mscorlib and some that don't use it. One of the macros in this file uses the __pin keyword. When this header is compiled with a source file that doesn't use mscorlib I get the following error: fatal error C1190: managed targeted code req...more >>

this->user_information->Text = this->query->SList[this->listBox1->SelectedIndex]; sList is a SortedList i want to reach its valur by its index ??? i got this error error C2845: '[' : cannot perform pointer arithmetic on __gc pointer 'System::Collections::SortedList __gc *' ...more >>

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Hi Anyone has any idea how to start the GUI for Visual C++ 6.0 Is it possible to develop the GUI in Visual Basic 6.0 and incorporate it to Visual C++ 6.0 ?...more >>

I'm getting error C2062: type 'float' unexpected and error C2065: 'complex' : undeclared identifier when I try to compile this #include "stdafx.h #include <iostream> //Consol I/ #include <time.h> //So I can measure how long it take #include <complex> //Complex math suppor void fourn(complex <f...more >>

Hi, I want to do an action (something like allocate memory...) right after my window (a CView) is created. how to that ? Thanks in advance ...more >>

Hi, I have created an incon in the toolbar. But how to add event-handler to my new button (i'm using Visual Studio .NET) Thanks ...more >>

Hi, I have a peculiar problem with trying to assess FileInfo Attributes. I am trying to do something like this FileInfo* fi = new FileInfo(fileName); if (fi->Attributes & Hidden) { // ... } However, the compiler issues the following errors error C2039: 'Hid...more >>

Hi All Im geting the compiler error error C2440: '=' : cannot convert from 'short (__thiscall CMSComm::*)(void)' to 'short on this line sCommEvent = m_ctlMSComm.GetCommEvent sCommEvent is a short and m_ctlMSComm is the control varable for the MSComm ActiveX contro is...more >>

In Visual Studio .NET 2003, I do the following 1) File->New->Project 2) Visual C++ Projects->.NET->Windows Forms Application 3) Project->Add New Item->C++ File 4) Clear the new C++ file and replace with the two lines: #include "stdafx.h" #include <vcclr.h> 5) Build->Build Solut...more >>

Hello everyone, I'm developing a mixed-mode Managed C++ DLL using .NET 2003, and to avoid the potential mixed-DLL-loading-deadlock issue discussed in MS KB article 814472 (http://support.microsoft.com/?id=814472), I've followed the steps in that article appropriately. However, our applicatio...more >>

I would like to pass an Object* to a delegated thread function. However, the framework does not accommodate this. I have seen examples using VB and even C#. In fact, C# appears to have language facilities that make accomplishing this very easy. However, I only have the luxury of coding this up i...more >>

Am upgrading a C++ console app to add a DotNet Front End. Have run into a couple of issues. The first one is basically a c++ question. I have a class which maintains a reference to an istringstream that is passed to it in the constructor. Since I won't have an istream to give it from the front...more >>

The Visual C++ Toolkit is a free edition of Microsoft's professional Visual C++ optimizing compiler and standard libraries - the same optimizing compiler and standard libraries that ship in Visual Studio .NET 2003 Professional! Web: http://msdn.microsoft.com/visualc/vctoolkit2003/ Dow...more >>

hi all, I want to now how to add images in Menubar using VB.Net for Windows CE. Pl. give me the right suggestion and code to put image in the menubar menuitem so that I can put it in the Toolbar with regards, -- Shrikant Chikhalkar Product Engineer, Manchitra Services Pvt. Ltd., New D...more >>

I have to ask a stupid question regarding Monitor. Wait() and Pulse() make be used to wait for and signal events in a given thread. However, neither can be used until calling within a synchronized block between calls to Enter() and Exit(). Am I missing something when I say that it seems u...more >>

Hi, I am trying to use the Monitor::Wait() function from C++. I get an exception saying "Object synchronization method was called from an unsynchronized block of code." So my question is simply: how do I synchronize a block of code? Best regards, Michael Powell...more >>

I have a byte[] of binary data received from a NetworkStream (C# code) that I need to pass to the IWMWriter object in a DLL written in Managed extensions for C++ (since the Windows Media SDK is not usable in C#) whose WriteSample function takes a byte* parameter Do I need to marshal data? I thoug...more >>

Hello, Here is my challenge. I have a thread awaiting events being sent via Queue. Currently I am checking the count and if there is a count, Dequeue() the next object and process it. By design, however, this is inefficient usage of CPU clocks. A more efficient usage could be to wrap Mon...more >>

I have a rather large ATL project that I converted from VC++ 6. Whenever I build it, VS.NET concludes the whole thing is out of date and rebuilds the entire project. This happens even immediately following a successful build of the entire project. Any idea why? Thanks, Bill ...more >>

I am trying to use a C style string in a managed class. When I try to call a function like strcmp I get an error. For example, this code __gc MyClass char str _nogc [16] void foo() strcpy(str, "Hello") Would give the error error C2664: 'strcpy' : cannot convert pa...more >>

Hello to all: Apparently when I create exe of the project I must select the configuration Release? instead of Debug that is the one that comes by defect. The problem that I have is that when I execute the application in way it release jump excepctions to me that does not jump to...more >>

How does the byte packing and the byte alignment work in VC++ compiler? What is the effect of #pragma pack(n) on the alignment and byte packing for example while using the structur struc double a char b char c } in a 8 byte packing the sizeof structure is 16. Could anyone exp...more >>

Hi I've got the following errors when trying to compile a program cvision error LNK2001: unresolved external symbol _IID_IGraphBuilde cvision error LNK2001: unresolved external symbo _IID_IFileSinkFilter cvision error LNK2001: unresolved external symbol _IID_ICreateDevEnu cvision error LNK20...more >>

hello all, i have a problem connected with resolving names (in managed code) of a classes, wrriten in c#. for instance, if a I have an assembly named AAA, and a class named BBB, i cannot see BBB when I write in managed code AAA::, and even if I write AAA::BBB *c = new AAA::BBB(); i get an...more >>

I am trying to utilize Hashtable to facilitate mapping one value to another. I have successfully added several such pairs. When using the enumerators to find keys upon subsequent manipulation, I get the following error. Any ideas why this is? Maybe I didn't initialize the table properly? An u...more >>

Hello, I have a problem with trowing exception from a __gc class to c# class. I have a wrapper class which wraps an unmanaged class. On a certain moment I check something in that wrapper and if the result is false, I throw a selfMadeException. The selfMadeException is extended from the Syst...more >>

Hello, I use Microsoft Visual C++ .NET (version 7.1.3088) Sometimes (with big codes?) when I get a compile error and click on the error, the cursor is placed next to the wrong piece of code. The line number in the error message and that of the cursor do match but the real error is somewhere els...more >>