Hi, Strange, I am having a .Net C++ managed dll project, where in i call a new on a non managed code. This however is giving a problem, I get an exception saying "An unhandled exception of type 'System.NullReferenceException' occured in Mydll.dll" "Additional information: Object reference not...more >>

I've got Visual C++ 2003. I'm looking for a profiling tool. I'm from the Unix world where a good profiler comes free and built into the compiler and linker. I tried the Help utility in Visual C++ and got 500 hits for "profile" .. but none of them indicated that a profiler is built-into ...more >>

hi, i'm still having troubles with my menus the EnableMenuItem function doesn't seem to work at all in a MDI. i'm doing exactly the same thing as i did when i coded a dialog based App with a menu, but it worked. i just want to disable and gray commands in the menu. And even when i disa...more >>

After I open a workspace I have access to all C++ files of the workspace. I can put breakpoints. Everything look great... So I go attach to my process and Visual C++ go close my workspace! I don't see the goal of closing the workspace... How can I fix this strange behavior/bug?...more >>

I recently read that the heap that you access when you use malloc and free is created by MSVCRT. Is the "default" or process heap ever used then if you're not explicitly calling heapalloc with that heap? Why does MSVCRT not just use this default process heap?...more >>

I have posted my problem before and still not feel confused. Anyone know what is the problem? In my Win32 dll, I defined: #ifdef DllExport #define UNMANAGED_API __declspec(dllexport) #else #define UNMANAGED_API __declspec(dllimport) #endif #ifdef __cplusplus extern "C" { #endif...more >>

I'm trying to get Vis C++ std to compile using /O2 optimizing flag. Many people have suggested downloading the MS C++ 2003 Toolkit ... it supposedly has C++ compiler bins that one could use. I downloaded the 2003 Toolkit ... but the bin files are identical (size, date, contents) as my ...more >>

Hi all, I got a *.lib files and some header files from a thrid party which is developed using ANSI C. I am now trying to create a managed C++ application and import those libraries. I added the lib file in the linker option and include those header files inside the program. Everything is o...more >>

hi, i finally tryied with a popup menu but i have a problem. i popup it with TrackMenuPopup and i create it from a ressource. but it doesn't look as it should. i d'ont have the names of the menu categories, only a small rect appears but with nothing wrote in. when i pass on with the curso...more >>

Ive got Vis C++ 2003 standard edition. I want to optimize my application for speed (use the /O2 directive). The "optimization" field in my Project Properties window shows /O2 (in my Release build) but it is dimmed out. I cannot change it. My BuildLog.htm file says "Optimization not av...more >>

i tried to build a windows service in .net.however when i gave the commmand "installutil" at dos prompt in the right directory,it gives the error "installutil" is not internal or external command,operable or batch file.please help me out -------------------------------- From: aditya desai -----...more >>

I'm having a _CrtIsValidHeapPointer assertion at the _free_dbg_lk function. I'm calling a function from a DLL witch allocates (malloc) a char array and the exception occours freeing the array. The DLL that causes the problem is compiled and linked on the same way that the others that form my a...more >>

Hello, I am new to VC++. I want to use the values in a Dll (values are assigned to variables in the program and this vaule should be made use in the dll). Is it possible? I have already tried declaring the variables as extern _declspec (dllimport) in the dll. This doesn't work. Can anyone h...more >>

Hello, I am developing a project using Windows Forms .NET by using Visual C++ .NET v2003. I open a Sub_Form by clicking a button on the Main_Form. Some operations are working at Main_Form and results of those works are updating the texts and enable statuses of controls (LabelBox, Buttons, ...more >>

None of those words in the message. Been nice if the editor would have highlighted anything "offensive" so how did you get yours through? - Robert - PS I agree with the other poster that suggested going straight to the newsgroup. I don't have any messaging system installed on my mac...more >>

In the same spirit as setw( ) and setprecision( ), is there a stream manipulator that will fill in closing-zeroes on those fractions with a given setprecision( )? For example, if setprecision(3) is used, I want '1' to be displayed as "1.000", '1.2' to be displayed as "1.200", '1.23' to be d...more >>

I am trying to add a 'Validating' event handler to a TrackBar. Code: ... this->tbKeyboards->Validating += new System::EventHandler(this, tbKeyboards_Validating); ... System::Void tbKeyboards_Validating(Object* sender, System::ComponentModel::CancelEventArgs* e) ... Compiling this code...more >>

In my C++.NET Class library project, I called a dll by using: #using "My_Win32_Dll.dll" But when I build the project, I got: "c:\DotNET\C++\C++_Solution\MyClassLib\MyClassLib.h(5): fatal error C1192: #using failed on 'c:\dotnet\c++\c++_solution\myclasslib\my_win32_dll.dll' " What is t...more >>

Hi, I'm writing a code that has to be as efficient as possible both in terms of memory use and execution speed. I'll have to pass a class instance (which is an 'intelligent' array) to a function (multiple times). Taking this into consideration, should I pass it as a pointer or reference? Is t...more >>

I wonder if a "reply" can get through?... Well my serious request still won't even go through as a "reply" but this simple reply did?! - Robert - -- Robert A. Macy ------------------------------------------------------------------------ Posted via http://www.codecomments.com --...more >>

I've tried to post a legitmate question 15 times with NO success, but my simple single line "test" message went right through. - Robert - -- Robert A. Macy ------------------------------------------------------------------------ Posted via http://www.codecomments.com -------------...more >>

Hi all.. I'm planning to translate an application I programmed in VC++ 6.0 to VC++.NET platform becaun in VS.NET it's easier to develop. The question is: if I compile an application under VS.NET, it will run under Windows 98 O.S. without any problem? Thanks in advance Jaime ...more >>

How do I set compiler options in my IDE? My IDE is VC++ Standerd 6.0. thx! -- Message posted via http://www.dotnetmonster.com...more >>

I've got a Windows Forms Application project where I'm using 2 radial buttons. I want to poll whether the radial button has been pressed or not. Here's one way I think it could work, using the Checked property : bool r1=System::Windows::Forms::RadioButton::get_Checked; but how do I specify ...more >>

Hello All, I have effectively the following (part of a much bigger header): namespace X { namespace Y { __gc public class EnvironmentList { // rest of declaration }; __gc public class AnotherClass { public: __property EnvironmentList* get_EnvironmentList( ); // **!** ...more >>

I have been asked to design a file server application. Here are the particulars: The data that is to be served is on a 80Gbyte USB drive connected to a USB 2.0 port. That disk needs to be used by 2 applications. One archives the disk data to another drive, the other does timed seeks extr...more >>

I compiled a program using VC++ pro. I use "depends.exe" to determine what DLLs the program is linking. Then I use the Install Shield that comes with VC++ to create a setup file. I run the setup file on my pc(XP) and it works great. My problem is that when I try to install it on any* other s...more >>

Can someone direct me to an example of how to call VSS to 'get' files from a particular project/lable? Thanks...more >>

i want to plot a line graph. The values that I obtain are the RGB value of a TIFF image. i m plotting RGB values vs value(1,2,3..) so when generated the RGB values, there will b a column of values for me t plot the line graph thanks alot Peteroid wrote: > [B]What kind of 'plot' of the da...more >>

Hi, I am using boost which uses templates heavily. When I make a typo the compiler complains, but it complains in the boost headerfile (I attached an example at the end where I forgot to pass in a parameter). But what I actually need to know is where this template was instantiated so that I...more >>

Hi Friends, In our Automation server on VC++ 6.0, we are calling a static function, UpdateRegistryAll(), of COleObjectFactory class to register a list of factory objects of the server. In addition to the interfaces, these factory objects includes a COleTemplateServer object as a member object...more >>

I am totally new to .net So far, I hate it. I been programming vb since vb3 and .net took a 1 line program and made it a 47 lines program filled with stuf that appears meaningless... ok, I know it's not, but it seams that way. Forgive me, I'm old and stuck in my ways. I did not want to re-lea...more >>

I have a function that requires a LPCTSTR parameter. I have the value I want to pass to it in a TextBox->Text field. Is there any way to do it in a single assignment. e.g. DWORD Xyz::TheFunc(LPCTSTR lpVal) .... TheFunc(Junk->Text->Something()); ...more >>

If there is a site someone can point me to that answers such basic questions, rather than taking up support's time posting answers, please let me know. I've developed C# .NET, unmanaged C++, and MFC applications. I have not written any C++.NET apps yet and have some very basic questions. ...more >>

i want to read all the records of a file *( first till last )* using xstream, please help me with VC++ codes.iam a begginer to VC++. thanks in advance! +----------------------------------------------------------------+ | Attachment filename: tomakali.jpg ...more >>

In a standard GroupBox, how do I make the visible 'border line' not show (it looks like an etched in line about 5 pixels shy of each border of the group box)? Thanks in advance! [==Peteroid==] ...more >>

Hi, I'm trying to see if a file (exportfile) is set to read only using File::GetAttributes: if ((File::GetAttributes(exportfile.c_str()) & FileAttributes::ReadOnly) != 0); { MessageBox::Show("The File is Read Only","Warning"); } I've tried that and a few variations but it always retur...more >>

Understand that SetDlgItemInt is to show the number in edit box SetDlgItemText is to show text... How abt displaying a decimal number, like 187.542?? thanks alot -- wayne ------------------------------------------------------------------------ Posted via http://www.codecomments....more >>

Dear all, May i know how can i plot a column of values?? pls. Apparently i have a column of values generated. how can i plot it using vc++? wat are the command use and necessary header files that are needed? thanks... -- wayne ------------------------------------------------------...more >>

I love C# and I've been porting a lot of my older C++ code, but there is one app that I haven't quite figured out yet. I suppose I could re-engineer the app from the ground up, but I've already accumulated a lot of data files, so the format is set for now. Basically, the data format consists ...more >>

At URL http://www.microsoft.com/msdownload/platformsdk/sdkupdate there is the Windows XP SP2 Platform SDK. What does this provide in addition to the stuff installed by VS 2003? Does it come with a C++ compiler?...more >>

Hi, I'm using Visual C++ .NET 2003 and I want to use the ArrayList class in order to put managed classes in it. For instance , i wrote : (I created an empty .NET project) #using namespace System::Collections; __gc class point { protected : int x; inty; public : poi...more >>

I know VC++ and C# fairly well, but I'm trying to weigh pros and cons for use of each on a music project. It will entail MIDI and sample playback, use of fairly high-res timers (if available) and quick (realtime) update of screen graphics. I've written similar programs, but not under .NET. I...more >>

Given that VS2005 has made an effort to clean up the syntax of VC++ (in C++/CLI), is there any future plans to do away with function protos, ala C#/VB? What are they needed for these days? ...more >>

The 3rd party SDK that I would like to use in C# (I am an C/C++ programmer) is designed to be used from C/C++. This is how it works: The vendor is abstracting things a bit. The real DLL has only one actual exported method, one of the parameters on the DLL takes an enum which determines whic...more >>

There is a 3rd party library that is a bit complex, has a number of functions and structs and variable length data, the whole bit. I saw Eric Gunnerson's July 14, 2002, article "Using Existing Code in C#". He talks about four different ways to wrap the code in C++, the last one is: "Modifying a...more >>

Hi all, i have developed a class that has a member called 'PostMessage' if i only reference this member from within the class context, there is no problem, but if i trie to execute it as a method, i get the error error LNK2019: unresolved external symbol "public: void __thiscall Message...more >>

In order to maintain compatibility with some older software I need to be able to read and write a classic ini type file. I don't see anything like that in VC.NET. The old code looks something like this: TIniFile *INI; INI = new TIniFile("MyApp.ini"); Timeout = INI->ReadString("DEFAULTS","...more >>

In .NET multithreading we have to assign a thread to a method of a separate object each time (and not two methods of the same object)? In other words, why does this hung? #using <mscorlib.dll> using namespace System; using namespace System::Threading; class SomeException {}; ...more >>

Are there any command like Unix "tail -f " ? I'm developing a service program who writes log file in each 5 second. Now, I want to watch changes of the contaxt of the file. I know Unix porvides such program ,"tail -f ". Does Windows has similar command? Thanks Charles Shao ...more >>