Hi, i'm developing an application which make use of the Wininet API t download a file from a web server. However, the application runs fine al most of the machine which i tested except for one laptop running on Wi XP This particular machine give me an HttpSendRequest Failed Error of 1200 which...more >>

Background: I have nearly two years of experience with C# and the .NET framework, as well as a fair amount of C experience from many years ago, but no C++ background (until about two months ago.) Now, I am helping a team develop an application with a UI based on C# and business logic coded ...more >>

I have what I imagine is a very simple Managed C++ memory allocation question. I have the following line of code in a static method of a managed C++ class that always generate a System.NullReferenceException ("Object reference not set to an instance of an object."): char * ptvszHexString =...more >>

How do we edit the Main Window of a Visual Studio C++ application **graphically** - i.e. without having to put code into the .cpp file directly. We cannot find a way to show the contents of the Main Window and therefore cannot add buttons or edit boxes et cetera without resorting to code - which d...more >>

UNABLE TO COMPILE Good morning: I would like to ask for the help, with compiling on Visual C++ Toolkit 2003. I have no experience with C++, nor with C language. This is my first try. I follow instruction, but I am not able to get through. Have downloaded and installed Visual C+...more >>

Hello Developpers I am using Visual C++ .NET Standard Edition 2003 on Windows 2000 Professional. I would like to send intensive collection of data, which includes int, float, names, through ethernet using TCP/IP from Server to Client or vice verse. During this communication the number of data are ...more >>

Hello, I'm new to dotnet. I want to write an app that's communication with a sql server 7 database via ADO.NET. This app need to have fast and stable throughput. I know that the database access itself will not be the bottle neck. The Question is whether i should use Manage c++/C# or Unma...more >>

I'm not new to C++, but it has been a while, and I'm defintely new to dot net. So to get back into the swing of things, I tried to create the ubiqitous "hello world" program using a console application. Most of the C++ programming I've ever done has been in Borland products (mostly C++ Builde...more >>

Hi! I have a problem with setting the character set in my ListBox (List). When I create a CFont object with a specific character set and I set that font in the Device Context recieved from the ListBox, then it is OK. I can write through that DC in the chosen charset. See Code : CFont * font = ne...more >>

How can I see the value of a static variable when debugging? Static's don't show up in the variable-window and when I type the name of a static variable in the watch-window the debugger says this the symbol is not defined I'm in Visual C++ 6.0 Thanks Tom...more >>

[BTW: I'm running Visual C++ 6.0 (Visual Studio)... Thanks.... When I click on *some* links in the text on the help pages of Microsof Visual Studio 6.0 for C++ I get an error dialog box with the title 'Interne Explorer Script Error'. The dialog contents always go something like this - - - - - ...more >>

Hi all, When I try to use API functions in Windows Form all I get ar compilation errors. MSDN doesn't help at all in this case. Here is m code: (I test it with very simple one Rectangle since I want to do som drawing) public __gc class APIFunctionality { public: [System::Runtime::Inter...more >>

Hi all, I want to write a program that I once wrote in native API. There wa main window and child window, and I was able to drag a bitmap from on window to another. Back and forth. I am new to Window Forms and I hav no idea how to do this now. Any general help would be great. Thx - yelp6...more >>

Hi, I'm trying to write a macro that will generate managed c++ wrappers of map. I want a managed iterator and a managed map. I successfully built a pair of classes (iterator and map) that work fine. I called it IntToIntMap and IntToIntIterator. When I was finished, I realized that if I...more >>

Hi I just used Visual C++ to compile a C code. I code a bunch of error messages (mostly syntax errors) How to get to these errors? Is there any automatic line numbering feature that I can use Thanks! ...more >>

Here is some code of mine for seeing if a printer job, jobs[0], is more than 5 minutes old FILETIME syst, jobt LARGE_INTEGER syst2, jobt2, dt GetSystemTimeAsFileTime(&syst) SystemTimeToFileTime(&jobs[0].Submitted, &jobt) syst2.HighPart = syst.dwHighDateTime syst2.LowPart = syst.dwLowDateTime...more >>

Hello all, Can someone recommend books for an unmanaged VC developer moving to managed extensions. I've searched previous messages (no books found) as well as the amazon.com reviews (no standout reviews). Sorry for the repeat (as I'm sure it is). Thanks, M ...more >>

Hi, I need a tool to check my applicationm for memory leaks. It uses mixed code and for now I didn't find proper tool. My application is managed c++ app and it uses mc++ wrappers for my unmanaged code (which uses MFC). When I stop debugging there is info about memory leaks but I'm sure that...more >>

Hi Maybe my question is trivial, but I need to get fullpath of my exe file where from it is executed esspecialy, when the directory with exe file is not current directory Thanks....more >>

Can anybody point me to or give a simple source example of a managed C++ application that can play a wav sound file? I know a little about playSound(), but it doesn't seem to like to compile (even though it's 'recognized' via type-ahead in the editor). Required header files might be my problem,...more >>

What would you expect from the following: enum Type { a, b, c }; public __gc class MClass { public: MClass(Type t); __property void set_Type(Type t); // etc. }; When compiling, I get very strange errors (in this case, for the constructor) where the Type type is compiled as the ...more >>

I have a CS class I wish to write in MC++: public class UnitsCollection : ArrayList { new public Units this[int index] { get { return (Units) base[index]; } set { base[index] = value; } } } Would the MC++ class below be equivalent? [DefaultMember("Item")] public __gc c...more >>

I would like to have my new C++ projects start out with two configurations, UnicodeDebug and UnicodeRelease, instead of the standard Debug and Release configurations that Visual Studio always creates. Is there a way to configure Visual Studio to do this Thanks in advance - Pete H...more >>

Writing my own algorithm to make a subarray in Visual C++ would be easy enough, but is there a useful function or method for doing this? I have strings stored as TCHAR[] and I want to get substrings of those, but the basic String.substr() function doesn't compile on that. I tried this TCHAR stri...more >>

I am using SHFileOperation() to copy files from the local hard drive a network share using a mapped drive. I want to set the up as a batch process with no user intervention. I have using the fFlags of FOF_NOCONFIRMATION | FOF_NOCONFIRMMKDIR | FOF_SILENT | FOF_NOERRORUI. When I added the FOF_NOERR...more >>

Hi All, I have an application (EXE) implemented in VC6, that uses Stringrays Objective Toolkit and Objective Grid classes. When i try to port this application to VC7 i get various linking errors mostly with id LNK2001, LNK2005, LNK2019 etc.. For Exampke: RMSCTreeCtrl.obj : error L...more >>

Anyone know how to add the standard tip of day dialog to an existing MFC app now compiled on VS.NET? It used to be in the component gallery but I can't seem to find this or figure out how to do it in VS.NET. Any help would be appreciated. Regards, Erin. -- Visit us on the web at: http://...more >>

I have a managed method that has an int parameter that has to be passed to an unmanaged method that takes a PBYTE and associated length as a DWORD. Anyone have any sample code that shows how to do this? Thanks. ...more >>

Hi, can someone explain me this behaviour: (steps to reproduce) 1. Open HKLM/SYSTEM\CurrentControlSet\Services\Eventlog\Application 2. Look at the "Sources" value 3. Now create new key under the "Application" 4. The new key is magically added to the "Sources" value (along with "New key #"...more >>

We use a lot asserts in our code, specifically _ASSERTE(exp) When the assert fires, there is the option to Abort/Retry/Ignore In VC6 hitting 'Retry' would take us to the code in the debugger but in VC7 there is another dialog "Unhandled exception" with the options Break/Continue. So we have to cli...more >>

Hi: I'm using VC 7.1. I like to have multiple actions taken after a build is complete. For example, I'd like to copy the files into multiple directories. But so far I can only specify ONE action, seems no way to specify more than one action there, I might be able to use a batch file for it but...more >>

Hi! I'm writing some program for voice commands ( for opening some programs ( word, excel )), i have some problems in this part. I'v downloaded MS Speech SDK for VC++6 but im using .NET. Q. 1 .) Can i use this MS speech SDK or must i use the beta version for .NET ? I'm writi...more >>

Hello, I am writing an application that relies heavily on interop between managed c++ and native c++. The main project is managed c++, but most of the classes themselves are written in native c++ using the "#pragma unmanaged" to prevent them from getting compiled into MSIL. A few of the na...more >>

Hello All, I have a VC project I created a few years back (Visual Studio 97). I'm now trying to recompile it under .NET 2003. I'm getting a linker error... LNK2019: unresolved external symbol __imp__InitCommoncontrolsEx@4 referenced in function _WinMainN@16 Does anyone know what I need to d...more >>

I am suddenly getting the obnoxious error C1060 when I try to compile my project. I have tried adjusting the /Zm switch as suggested by the help documents, but this is a project setting and not a VS.NET setting so that requires write access to the project file. This is an unacceptable solution...more >>

I have an MFC application that uses FlashWindowEx to notify the user of an event by minimizing a window on the taskbar and calling FlashWindowEx. This works fine except if you are using the Windows Classic theme on Windows XP. If you switch back to one of the built-in XP themes, it works fine. Wh...more >>

Hi all, I'm trying to make a plugin DLL for a third-party application, using VC++ .NET 2003. This DLL acts as a bridge between the C++ plugin API of the application, and my actual plugin code written in C#. When the app calls my unmanaged functions, they work fine. But as soon as my unma...more >>

Hello, I'm trying to accomplish the impossible by trying to do something equivalent of this example found here http://www.c-sharpcorner.com/Code/2003/Dec/DialogTutorial.as Starting with "Listing 2 - Changing the constructor of the modeless dialog to accept the parent object:" line and go onwards ...more >>

I am using MEC++ in VC 7.1. I had a method on a __gc object that looked like this: __property System::UInt32 get_MyProperty(void) { System::Byte __pin * pinBytes = &m_byteArray[0]; // entire array is now pinned NativeStruct const __nogc* nativeStructP = reinterpret_cast<Nati...more >>

I wanna write an application using xml technology with MS.NET2003 VC++.NET,but I don't know how to add xml functionality to my application, So anybody can offer same artical or snipped codes? Thank for your the advanced. Best regards. Allen Zhang ...more >>

What do I need to do to include comments in my source code like the following automatically whenever new source files are created? /* Title : Hello World * * Created: Jan 01, 2002 * * Modified: May 03, 2002 * Description: Test program * */ Regards, Saravanan...more >>

Whether I can compile a class or not, depends on the order of functions in my class. My question is (see example below): 1) Is it a bug that the class 'WillCompile' will compile and execute, or 2) or is it a bug that the class 'WillNotCompile' will not compile?. #include "stdafx.h" #in...more >>

Hi I have encountered a strange problem: while using PostThreadMessage to communicate between threads of different processes, PostThreadMessage returns "The message can be used only with synchronous operations" (1159), I didn't find any documentation discussing this error in details, does anyone h...more >>

Hi, I see that GCHandle can encapsulate a weak reference, but gcroot appears to only allow 'normal' GCHandles. Is this correct or is there something I've missed? Ta, Steve ...more >>

I have an SDI document that runs fine in Debug Mode but crashes in Release Mode. I have set up my project so I can debug in Release Mode. The project has a tab view Here is what is happening OnInitDialog calls this // parent is Tab Control, grandparent is Tab Vie m_pTabViewWnd = (CTabVw *)Get...more >>

I'm having a problem utilizing a control that was created in VB 6 sp6 in = VC 7 (unmanged). The VC7 is a dialog based application that uses the = control. The control work perfectly in a VB test form but I can not get = it to work in VC7. Whenever a property is accessed a memory access = excepti...more >>

Hello Al I am re-designing 16-bit application of other party. but currently i don't have VC++ 1.52 I want to compile or debug the original 16-bit application Thank you....more >>

I am having one batch file and using this I can start my Server. It will execute all exes while starting. Now my question is how to debug my exe using this batch file?? Is it possible to execute this batch file from my prject debug session.......more >>

In vc7 (studio 2002), when I try to debug the first "if" statement, the IDE jumps to the next valid line and evaluates it even if the if-statement is false. What is going on? if( (theDealer.m_nPoints == 15) && (theDealer.Hand.size() == 2) ) //Break Point set here but... { vector<Card>::iterato...more >>

Hi, al I want to debug a dll which will run in a remote machine. I set up the remote debuging setting properly. And set the "Remote Command" as the program name which will load the dll. Then I "start" the program. But vc always popup a window to let me input the executable file name. I can't execu...more >>