Visual C++

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  • Topics
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  • file seek then read thread-safety
    by b1st
    6 Replies
    Last post by Sdi
      • Hello, I have a class that exposes file seek and file read functionalities. A single instance of this class opens exactly one file and can be used in more than one thread. So my question is can thread B seek and change the read pointer while thread A is reading the same file and therefore cause the read function in thread A to return unintended data I'd been convinced that this scenario is in fact
  • DLL Load issue
    by George2
    6 Replies
    Last post by George2
      • Hello everyone, I am developing a DLL and I implement a class in the DLL. I am wondering in the two situations, 1. DLL is loaded by a single process multiple times 2. DLL is loaded a couple of times by multiple process How much times will the constructor be invoked I want to learn how objects inside a DLL is shared between different process. Is it possible to make multiple process shar
  • win32: vertical Toolbar
    by Claus554327
    3 Replies
    Last post by Claus
      • Hello everyone, I am currently building a real Windows Toolbar for an application written in another language and after some initial problems, it is going really well. However, today, I tried out changing the alignment of the toolbar to vertical. I realized that if the tools include separators, the toolbar is much too wide than it should be. Leaving the separators out, the width was correct, apar
  • Implementing intellisense in C++
    by nosage
    2 Replies
    Last post by nosage
      • I am trying to find a way to implement intellisense from a large set of interfaces and functions in the Visual C++ environment. Does anyone know how to do this I have looked in the help documents and found XML schema mentioned a lot. I am not too familiar with XML. Also I found that you can create a code snippet in XML and use that for intellisense, but it doesn't mention C++. It talks about C#, V
  • Repeated loading/unloading of libraries causes Error 8
    by Smitty1276
    7 Replies
    Last post by Simple Samples
      • I have a set of components in DLLs that I have to load and reload many times... unless necessary, I would prefer not to get bogged down by specifics about that; just know that I HAVE to LoadLibrary() then FreeLibrary() on those DLLs many times--mostly due to an annoying amount of static data that causes problems "resetting" things. In any case... after several iterations of the load/unlo
  • Is there a way to create a dll in C++ without a def file and have it work for a Visual Basic Host?
    by georgeob
    14 Replies
    Last post by georgeob
      • Is there a way to create a dll in C++ without a def file and have it work for a Visual Basic Host
  • Problems connecting C++ and VBA using a DLL
    by Sanign
    4 Replies
    Last post by Sanign
      • Hi! I have created a Win32 DLL project to connect a few functions written in C++ with excel through VBA. Everything works perfectly well in the computer where I have Visual C++ 2005 installed, and I can use the C++ function via the DLL with no problem, nevertheless when I try to use it in another computer where Visual C++ is not installed, the DLL does not work and it seems as if Visual Basic didn
  • problems creating c++ browser applet
    by luca morelli
    3 Replies
    Last post by Damien Watkins - MSFT
      • hi, i'm trying to create an internet explorer applet like in managed c++ in .net 1.1. i read that this may be achieved creating a user control and linking it inside the html page. I tried this from csharp and seems to work fine enough, but if i follow the same steps creating an empty c++ user control and try to open the applet i see only a rectangle. I think this is some kind of security issue, ma
  • PlaySound() hangs my program help
    by nga911
    7 Replies
    Last post by TilakGopi
      • am using a        PlaySound("dot.wav", NULL, SND_FILENAME | SND_SYNC); to play dot.wav file it works but hangs the program till it stops,is there any way to make it play smothly. or can i use          waveOutOpen  to play it    if(yes) {     how }   &
  • make a red border for a static text..
    by LS Mike
    2 Replies
    Last post by Simple Samples
      • I would like to add a red border whenever i select the static text, activeX Control or bitmap. How can i add this effect in it and how can i retrive it to normal Thanks. Regards, Mike
  • Having problem with FindWindow()
    by Mack M
    4 Replies
    Last post by rtpninja
      • Hi, I'm pretty new with CLI/C++ and was playing around with the windows api. This is my code: Code Snippet [DllImport("user32.dll")] static HWND FindWindow(LPCTSTR lpClassName, LPCTSTR lpWindowName); [DllImport("user32.dll")] static DWORD GetWindowThreadProcessId(HWND hWnd, LPDWORD lpdwProcessId); HANDLE testfunction() { HWND CalcWindow = FindWindo
  • Cannot handle preprocessor definition on 64bit platform
    by Senqiang
    2 Replies
    Last post by Senqiang
      • I can compile a project successfully on x86 platfomr. When I switch to x64 config, I got the following error when compiling: Error 1 fatal error C1083: Cannot open source file: 'NO_CONFIG_READER': No such file or directory File: c1xx This error sounds wired since ¡°NO_CONFIG_READER¡± is not a file. It is a preprocessor definition defined in the project property. Any hint
  • /Gm minimal rebuild liminations
    by Jan Zich
    1 Replies
    Last post by Bite Qiu - MSFT
      • Are there some known limitations of the /Gm option I'm currently working on a larger project, and sometimes I'm having troubles to compile it; especially when I synchronize from our repository. If I do have a problem, I have to recompile everything or use IncrediBuild. I found only one puzzling note in the MSDN documentation related to limitations of /Gm (about not having mutliple class def
  • Compiler
    by Thorium
    2 Replies
    Last post by Thorium
      • I have Microsoft visual studio 2005 registered. I want to learn C before i go on to C# or C++ and was wondering if the compiler for C++ would work with C. If not could any of you tell me a good place to get one -Thorium
  • Memory leak
    by hanumanth
    2 Replies
    Last post by Prasad Somwanshi
      • Hi all, A memory leak is showing by purifyer in my code it is showing the same line for 4 memory leaks in the line hRes = pThisNode->get_parentNode(&pParentNode); plz tell me how to fix these memory leaks. Thanks
  • Problem linking to library created by VS2005 in VC2003
    by Celios
    1 Replies
    Last post by My Site
      • I am using VS2003 and have to link an application with a library called "Services.lib" created in VCS2005. Whenever I link with Services.lib whether it's Debug or Release, linker will fail. If I build Debug version and include Debug version of Services.lib, there were a lot of CRT unresolved external symbol to Services.lib and also the other libs I linked in the Linker's Additional Depen
  • Draw transparent rectangle
    by Surezsu
    4 Replies
    Last post by Pintu Shukla
      • Hi all, At runtime how to draw a transparent rectangle on the bitmap, which is loaded from the file using memory DC.
  • How do we use and include PRECOMPILED HEADER FILES in our codes... .cpp or .h ...? Anybody...?
    by AllahIsGreat
    4 Replies
    Last post by sunil_singhal_10e2aa
      • Hi, ... ... ... I'm using the Vidual C++ Compiler... I have a PRECOMPILED HEADER FILE... I just don't know how to make it part of my programs... How do I instruction the Visual C++ Compiler to include and use the Precompiled Header File so that I won't have to go over all the codes all over again... I think if it's a Precompiled Header File, it's probably a whole bunch of the codes that I've
  • Inconsistencies in overriding private function (bug?)
    by Jonathan Scott
    8 Replies
    Last post by Jonathan Scott
      • I have a class, "Facade", which has two private members. One returns void, the other returns a pointer to another class. virtual void doProcessing(); virtual ResultSet* processPolicy(Policy* policy, boost::gregorian::date evaluationDate); I have two derived classes, class A overrides doProcessing(), class B overrides processPolicy(). I noticed that A's doProcessing() will get ca
  • Disabling the CRL (Visual C++ 2003)
    by Matt.J
    13 Replies
    Last post by talewisx
      • Hi, I would like to know if it is possible to disable VC++ from implementing the CRL, hence preventing my code being compiled with the inclusion of (hidden) calls to the runtime library as I have no need for it. I don't use features that depend on the CRL, such as classes, and have resorted to 'dropping in' assembly to prevent the use of the CRL as much as possible. Tha
  • How to register a hot key by using scan code
    by szsho
    2 Replies
    Last post by einaros
      • Is there any way to register a hot key by using scan code Since RegisterHotKey() only accepts virtual key code as the fourth parameter, apparently I need to convert the scan code into a virtual-key code. However, unlike other extended keys, that cannot be done because the key I want to monitor does not have corresponding virtual key code. I tried MapVirtualKeyEx() to convert the scan code, but
  • VC++ Dll with lots of library symbols???
    by VB Worker
    2 Replies
    Last post by Bite Qiu - MSFT
      • I am writing a VC++ dll with dll export functions, and when i compiled it and checked it with a debugger, all my exports were there, but there were also hundreds of these library symbols. Is there any option i can tick or anything i can do to get rid of this
  • dwmapi dependency when IE7 is installed
    by DanL_DeLorme
    2 Replies
    Last post by DanL_DeLorme
      • I have a COM file in a project that when I run on Windows XP without IE 7 installed, installs correctly. When I run this on Windows XP with IE 7.0 installed then the ocx file will not register properly due to a missing dependency - dwmapi.dll.   Looking at the file in dependency walker shows that this function is called from IEFRAME.DLL. The error message states that At least one module
  • Vector of an Object - [Solved]
    by ShiZero
    8 Replies
    Last post by Simple Samples
      • Hey everyone. Solved - Read at the bottom I'm usually not prone to ask for help with my coding issues, mainly because I'm at a very basic level of C++ programming and, so far, I've managed to find the answers to what I need after a bit of researching, both online and through my books. But this time, everything has failed me. Perhaps because it's a rather specific subject I'm asking a
  • making a CFile and CString objects
    by OpKc
    12 Replies
    Last post by Ramkrishna Pawar
      • Hello! I viewed a lot of documentation, where an objects of CFile and CString classes was used, but when i tried to create a CFile object ... CFile conf( "config.txt" , CFile::modeRead); ... i've got error messages: error C2065: 'CFile' : undeclared identifier error C2146: syntax error : missing ';' before identifier 'conf' error C3861: 'conf': identifier no