I've looked at recent posts and not found material, but I'm new to the board, so please forgive if this thread has come up before. I'm facing a conundrum about development of business applications which have robust user interface requirements (sorry, details must be kept private). The UI will ...more >>

I have a managed C++ project that contains a simple structure: struct { <multiple members> } mydata; I want to write the contents of this structure out to disk retaining the exactly binary data without any additional header information, and of course be able to later read it back in...more >>

Hi, sorry about the multiple posting, technical difficulties.... ----- What does exactly the size of the int datatype depends in C++? Recenlty I've heard that it depends on the machine's type, i.e. on 16-bit machines it's 16 bit, on 32-bit machines it's 32 etc. Is this true? Is this true ...more >>

What does exactly the size of the int datatype depends in C++? Recenlty I've heard that it depends on the machine's type, i.e. on 16-bit machines it's 16 bit, on 32-bit machines it's 32 etc. Is this true? Is this true for _all_ C++ compilers? ...more >>

VS.NET 2003 defaults the "Debugger Type" property to "Auto" for Visual C++ projects. Unfortunately, the "Auto" type isn't very smart. "Auto" bases the debugger type on the launched EXE's type, which may have nothing to do with the C++ project I'm trying to debug. I have a .NET EXE that ho...more >>

I have a complex codebase developed in Managed C++ that I am not particularly looking forward to porting to C++/CLI :) I'd like to know what the most compelling arguments for doing so are so I can justify the cost. For example, will Whidbey generate 64-bit assemblies for Managed C++, or only...more >>

I am trying to build an old software. It is written in C. Has .MAK files to build the code. A line from .MAK file \hw42\obj\fbl_fncs.obj : fbl_fncs.c cl /AM /Os /Gs /Zp /Fo\hw42\obj\fbl_fncs fbl_fncs.c /c The option /AM for cl.exe is not available for VC++ 6.0 Moreover the .mak files a...more >>

There seems to be a bug in the link-library dependency checking in VS.NET 2003. Under the Configuration->Linker->General->Additional Library Directories property, if you specify a directory name such as "$(SolutionDir)\..\lib", it will link properly, but when you try to run in the IDE will com...more >>

If I BUILD the code below, all works fine. But if I REBUILD the solution at any time, the following errors are found in the WrapperCOMEXE.idl: 1) error MIDL2337 : unsatisfied forward declaration : IQBEventCallBack [Coclass 'MyWrapper' ] --> This error occurs within the My...more >>

I'm a beginning c++ programmer and i need help making a win32 consol application, that when run, brings up the command promt. How would i g about maing the code for this - infinit ----------------------------------------------------------------------- Posted via http://www.codecomments.co ...more >>

In making a ternary search tree to identify as fast as possible the type of word passed in to the algorithm, for instance sp_help -> 1 (procedures), select -> 2 (keywords), sysobjects -> 3 (system tables), I'm stuck on deciding what type of comparison happens at each node. Has anyone got any ...more >>

Folks, I have posted this message on a different newsgroup but I did not get a single response. I take it that it must not have been the right forum. Anyways. I am seeking the solution to the classic ReadersWritesLock with a slight twist in My unmanaged C++. I can not import "System" and ...more >>

Hi, I've read it somewhere already but can't find the post anymore. In a mixed-mode wrapper, there is a special compiler or linker switch to hide unmanaged symbols and namespaces (such as std etc) from the assembly, so it's not visible for the end-user nor for through tools like reflector....more >>

Hi, i am using some STL containers in a library of mine. how can i see which exceptions can occur when doing something with those containers (adding an elemnt for example) i have looked in the MSDN collection, but class members lists nothing, and the specific functions also don't mention an...more >>

Is there a way to force the malloc in VC++ 2003 to use addresses above 0x12000000 for virtual memory ? You dont want to know why. It has to do with fortran common blocks. Thanks, Lynn ...more >>

I have my entire source code directory available on my laptop via Offline Files. The directory structure is housed on my server and made available offline on the laptop using Windows 2000. When I do a build on the server, everything is fine. When I do it on the laptop while connected to the...more >>

Hi everyone, I've seen the file "nochkclr.obj" mentioned frequently, but I've never seen an explanation of what it is. So ... what is it / what's in there? Thanks -- graham...more >>

Hi everyone, I have a DLL which contains both native and managed C++. To the best of my knowledge, the native code does not use MFC. The managed C++ is basically a wrapper around the native C++ ... so the relevant code would look like this: public __gc class ManagedWrapper { private:...more >>

I'm trying to write a function to sort the words in a sentence. Suppose there is only one space between words. For example, the input string is "They are Jonny and Jone". And ideal result is "and are Jone Jonny They". I know that I can get it done using existing functions. I'm thinking to...more >>

Hi folks, I'm currently evaluating a .NET installer platform. Basically, it has come down to either Wise or Installshield. It would be great to hear about your experiences with these product in deploying .NET apps. If you have experience deploying MSDE and the .NET runtime along with your a...more >>

I am using Microsoft Visual C++ and i have some projects configuration. (Configuration A, Configuration B, ..., Configuration N) I need to execute some system operation call such as copy, delete, etc before each one project configuration compilation. How do i do it? Regards, Jaime....more >>

how do i overcome this problem ?? Thanku in Advance ....more >>

Running this piece of code while having the sse optimization turned on (vcnet2003), something really strange happens I cannot explain. Without sse it is giving me the right results. float f = 0.8; f *= UINT_MAX; DWORD dw = (DWORD)f; Basically the result in dw should be 0xcccccccc (or 0xc...more >>

What do I have to set to get a VS.NET 2005 executable generated with the /clr (without :safe) option to run from the command line. using namespace System; void main() { Console::WriteLine("Hi"); } Compiled on the command line with: cl /clr Test.cpp I always get: Unhandled...more >>

I cannot find this feature at all. There is no bitmap property for menu items nor is there an imagelist property for the menu itself... How do I put images to the left of menu items? Thanks, Lynn ...more >>

Hello, with Visual Studio .NET 2003: __declspec(align(1)) struct X { unsigned int x : 3; unsigned int y : 13; }; sizeof(X) is 4, even with /Zp1 and/or pragma pack(1). I would expect it to be 2. Is there any way I can get the behaviour I need? It looks like I'm forced to use s...more >>

How can I supress runtime security checks in a mixed-mode C++ assembly? SuppressUnmanagedCodeSecurityAttribute apparently only works for P/Invoke and COM interop. I've got a somewhat chatty interface and can clearly see these checks being made using PerfMon. In this context I can't redu...more >>

Hello All - Hoping someone might be able to point me in the right direction. I have a System::String that is part of a managed class. Within a member function, I need to convert this String to a C-Style null terminated character array so that it can be passed to a legacy C function. Any ide...more >>

I have prepared Qt with the .NET 2003 and the "preparation" process failed. The error points to the missing string.h header file. I have used csvars32.bat to prepare the envitronment variable, but found no trace to this file in the INCLUDE and PATH. (The installation runs from script using nmake...more >>

I have recently purchased Visual C++ . Net compiler and i am trying to compile a project that i had working in Visual C++ 6.0. When I compile, I am receiving the warning: cl : Command line warning D4025 : overriding '/EHs' with '/EHa' I have specifically asked for the /EHsc switch because ...more >>

Hi i have some data in excel....I want to perform a series of operations on them and output the results to excel again. I know that some stuff could be used with VBA. however in this special case I don't know how to do it.! ex: In c++ you could store an array of characters in char[20] and th...more >>

**Newbie with managed C++** I'm trying to wrap an unmanaged C++ class in a managed C++ class library. When I instantiate the wrapper class it's ctor calls the ctor on the unmanaged class and at that point I get the exception: "An unhandled exception of type 'System.StackOverflowException' occu...more >>

Hi there, The .NET Framework developer's guide claims that one can filter managed exceptions in C++. http://msdn.microsoft.com/library/default.asp?url=/library/en-us/cpguide/html/cpconusinguser-filteredexceptions.asp However, I don't see how I get access to the managed exception object. The...more >>

Hi all, We have a property sheet that is created in one dll, and on that property sheet, there is a property page that is created in another dll. So, the property sheet and the property page come from different module states. Now, in CPropertySheet::OnKickIdle(), it calls GetActivePage(), w...more >>

Just trying to work through some examples I have seen on the web.... I'm getting an unresolved external linker error for operator new and delete. Here is the code, VERY simple. #pragma once using namespace System; namespace AB_Wrapper { // unmanaged class class CMyOldClass { pub...more >>

Hi, I created a Form and need a pointer to it so that I can reuse it again and again instead of recreating it all the time.. something like this... Form1.h // .... snipped for brevity #include "Form2.h" // class def ... snip Form2 *Preferences; Preferences = new Form2(); Preferen...more >>

I am in need of finding Visual C++ 1.5 16 bit compiler to compile an application for handhelds running DOS. Where can I find this compiler at this time? Thanks...more >>

I get odd behavior in the debugger with the following code. The output of the program itself is correct, but when I add the g_bad_int64_max and g_bad_int64_min to the watch window they show values of -1 and 0 repsectively. This only happens when initializing a const __int64 in global scope...more >>

Hi There, We have a medium size project about 2000 source files and 700,000 lines of code, as you can imagine this takes some time to rebuild all. Now our problem is that we have a code generator we have developed that updates some of our classes, as an example lets say I update 50 files. W...more >>

Can anyone explain to me that why the flowling code printf("%f\n", atof("12345678901234567890")); produces this result: 12345678901234567000.000000 Is it that printf cannot handle double data correctly or that I am doing right things? Great thanks....more >>

Hello I am making a syntax highlighter for T-SQL, and I am going to hardcode the words into it for speed's sake (I will probably have thought up enough new features for a new version when the next version of SQL comes out). My main algorithm is going to go through all the words in the RICHEDIT...more >>

Hello, I have two problems with design view in VStudio 2003: First, if I close a solution with a form in design view, next time that I want start the vstudio, it hangs up before loading the project. I must remove the .vcproj file from the solution directory, start the vstudio, click ok on t...more >>

hello, i am working on WMA SDK. i got the SDK from Microsoft under source development agreement . The SDK has the project of WMA 9.1 built in VC 7.1 As i dont have VC 7 i found a tool to convert the project to VC 6. now that project has some errors , is it bcoz of building the project in VC 6....more >>

For a project containing help; set the resource.hm file attributes to include read only. Uncheck Tools->Options->Environment->Documents->Edit read only files. Open Project Open Resource View In Resource View, expand project.rc Expand dialog Notice that all dialog IDs have been replaced wit...more >>

This is probably a simple/stupid question, but... I have an MDI application which has a socket receiving data. When the data is received it is displayed in some way. Sometimes the data that is received is new and sometimes it is just an update. If something in the document hasn't been updat...more >>

Hi again, Maybe I missed something, but I cannot do a forward declaration in managed C++. By doing: namespace Namespace { public __gc class A; // forward declaration public __gc class B // B class, that uses A in constructor { public: B(A* a) : mA(a) {} private A* mA; }; pub...more >>

I'm attempting to retrieve specific versions of a row's column in C++ (this works fine in C# - apart from the syntax) // by column number row->Item[2, DataRowVersion::Original]->ToString(); // or column name row->Item[S"FirstName", DataRowVersion::Original]->ToString(); However, both of th...more >>

Hi there, I'm trying to compile the program with Whidbey but I got the following problem: ------- cut here ----------- c:\h>cl h.cpp /clr [many warnings skipped] h.cpp(152) : error C3396: 'System.Runtime.CompilerServices.IsImplicitlyDereferenced' : custom attribute not found in 'mscorl...more >>

Hi, I cannot get this code to work. All I want to do is to fetch 'which' toolbar button was clicked, so I can act on it... private: System::Void toolBar1_Click(System::Object * sender, System::EventArgs * e) { int index = toolBar1->Buttons->IndexOf(dynamic_cast<ToolBarButton *>(e->Button...more >>

First off, the sympathy is for all you poor buggers out there who have to figure out how to marry Managed Extensions for C++ onto your legacy code. My condolences; my brief experience with the process leads me to believe the Microsoft hates all of its VC++ developers :) Now, the question. I'm g...more >>