Managed C++/CLI

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The memory could not be "written". error Shamnar12-Jul-06 1:57 Shamnar 12-Jul-06 1:57  friends i have written a program in c. i could run the program in TC. but when i am triying to run the program in Vc6.0 IDE. i have got an error. i couldnt run the program... but i can compilt it. while debugging the program can finish.. i will show u the error i am getting while i am triying to run The instruction at "0x77fcc912" referenced memory at "0x0031659a". The memory could not be "written". pls help me..... shamnar Re: The memory could not be "written". error Jonathan [Darka]12-Jul-06 3:41 Jonathan [Darka] 12-Jul-06 3:41  The application attempted to write to an area of memory for which it either had no permission, or more likely an area of memory that is not writable. Debugging the application should help you by prviding a call stack. Darka [Xanya] Windows Forms mehmetned11-Jul-06 21:58 mehmetned 11-Jul-06 21:58  does the managed c++ need to develop a windows forms applications? Re: Windows Forms Jonathan [Darka]12-Jul-06 3:59 Jonathan [Darka] 12-Jul-06 3:59  You can develop windows forms applications in managed C++ if you want to but you don't have to, WinForms is just part of .net Darka [Xanya] Re: Windows Forms mehmetned12-Jul-06 4:46 mehmetned 12-Jul-06 4:46  Ok thanks. I also want to know that, is the garbage collection essential to develop windows forms application ? Because, .net generates '__gc' operator into my code. Re: Windows Forms Jonathan [Darka]12-Jul-06 5:06 Jonathan [Darka] 12-Jul-06 5:06  Yes it is, as it is will all .net applications as garbage collection is a fundamental part of the .net framework. regards, Darka [Xanya] Re: Windows Forms Jun Du12-Jul-06 4:22 Jun Du 12-Jul-06 4:22  No. There are many types of .NET applications, Windows, Console, Service, Web, etc. But to take advantage of .NET (managed) capability, Windows applications should use Windows Forms. Best, Jun managed c++ or unmanaged c++ mehmetned11-Jul-06 21:53 mehmetned 11-Jul-06 21:53  What is the difference between managed and unmanaged c++? (most important diffenrences please) Re: managed c++ or unmanaged c++ Jonathan [Darka]12-Jul-06 3:57 Jonathan [Darka] 12-Jul-06 3:57  Managed C++ is .NET, unmanaged C++ is C++ Managed C++, includes things like Garbage Collection, WinForms, etc. Managed C++ can only be used to create .NET applications C++ does not. C++ can be used to create any type of application. Darka [Xanya] Re: managed c++ or unmanaged c++ Jun Du12-Jul-06 4:32 Jun Du 12-Jul-06 4:32  Managed C++ is a .NET C++ language, which now is offically called C++/CLI (common language infrastructure) on .NET Framework 2.0. It contains lots of extensions to ISO C++ (unmanaged). Microsoft has submitted C++/CLI spec to ECMA. Best, Jun trying to compile a C file in a C++ CLR project Super Lloyd11-Jul-06 20:47 Super Lloyd 11-Jul-06 20:47  Give me this error: Error 1 Command line error D8045 : cannot compile C file '..\..\..\..\Dev\API_C++\cutil.c' with the /clr option cl But it's a very ordinary C file! no special function like setjmp just malloc/free and some pointers Any idea? Re: trying to compile a C file in a C++ CLR project Super Lloyd11-Jul-06 20:59 Super Lloyd 11-Jul-06 20:59  Never mind, solved... Re: trying to compile a C file in a C++ CLR project Jonas Hammarberg11-Jul-06 21:10 Jonas Hammarberg 11-Jul-06 21:10  From MSDN ( http://msdn2.microsoft.com/en-us/library/ms173265(d=ide).aspx ) Known Issues Compiling Library Projects with /clr Visual C++ 2005 contains some known issues when compiling library projects with /clr: When compiling an MFC ActiveX control project with /clr in the development environment, the build system will attempt to register the .dll with regasm and not regsvr32. You must manually register the control with regsvr32. When you create an ATL project and then enable /clr, the .c files will generate an error, because .c files cannot be compiled with /clr. However, if you change the file settings to compile the file with /TP, you will generate linker errors. The resolution is to compile the .c files as native (without /clr). Sir, In C++ what functions get Added? CodeVarma10-Jul-06 15:28 CodeVarma 10-Jul-06 15:28  Sir, What are the function that will be added automatically when a Object in C++ is created . Fly Like An Eagle With MIGHTY POWER. Re: Sir, In C++ what functions get Added? [modified] Sebastian Schneider10-Jul-06 23:45 Sebastian Schneider 10-Jul-06 23:45  Default Constructors, Default Destructor. If you add a constructor with empty parameter list yourself, no other constructors are added. (Note: Added, to me, means "functions which are neither inherited nor explicitly implemented".) Cheers, Sebastian -- Contra vim mortem non est medicamen in hortem. -- modified at 5:45 Tuesday 11th July, 2006 Re: Sir, In C++ what functions get Added? toxcct10-Jul-06 23:52 toxcct 10-Jul-06 23:52  as we are on a managed C++, i think he was talking about the member function inherited from a CObject-like class (but i don't know .NET programming that much) TOXCCT >>> GEII power [VisualCalc 3.0 updated ][Flags Beginner's Guide new! ] Re: Sir, In C++ what functions get Added? Sebastian Schneider11-Jul-06 1:10 Sebastian Schneider 11-Jul-06 1:10  Might be. In that case, there is no single answer. Every accessible member of the base class is "added", so the functions added really depend on the base class. The only thing you can say is that "everything is an Object", so the accessible Object-functions are available for "everything". Cheers, Sebastian -- Contra vim mortem non est medicamen in hortem. Double Buffering in Managed C++ Pavan Rao9-Jul-06 21:13 Pavan Rao 9-Jul-06 21:13  I have real time data to be displayed on a X-Y graph. I need to use Double buffering to avoid flickering. How to accomplish Double Buffering in Managed C++. Re: Double Buffering in Managed C++ Jun Du10-Jul-06 4:18 Jun Du 10-Jul-06 4:18  There are several approaches. If you use GDI+ to draw, one simplest is creating a bitmap graphic object as the buffer. Draw to the buffer. Whenever necessary, draw (copy) the buffer to the screen. Best, Jun Re: Double Buffering in Managed C++ Pavan Rao10-Jul-06 4:24 Pavan Rao 10-Jul-06 4:24  Jun, thank you for the suggestion,, I shall attempt doing this and shall post the result back here Cheers Pavan Re: Double Buffering in Managed C++ Sebastian Schneider10-Jul-06 4:45 Sebastian Schneider 10-Jul-06 4:45  I know this sounds like an ad, but have a look at ZedGraph. Its GPL'ed, documented both on CP and SF, and available from SF or CP as well. You would be able to offer zooming, human-readable axis-dimensions (min, max, stepsize) and other useful stuff. Cheers, Sebastian -- Contra vim mortem non est medicamen in hortem. Re: Double Buffering in Managed C++ mertadin21-Jul-06 3:13 mertadin 21-Jul-06 3:13  I hope this will help // in order to solve flickering i have to use double buffering this->SetStyle( ControlStyles::AllPaintingInWmPaint, true); this->SetStyle( ControlStyles::UserPaint, true); this->SetStyle( ControlStyles::DoubleBuffer, true ); TAPI v dot net flippydeflippydebop8-Jul-06 20:55 flippydeflippydebop 8-Jul-06 20:55  I have an upcoming TAPI project to be written using Visual C++ 2005. Im just wondering is there some new fan-dangled API in the dot net framework that supercedes the TAPI API? Can I use a vector of class objects? Suddha Talukdar8-Jul-06 13:07 Suddha Talukdar 8-Jul-06 13:07  I want to know if declaring soemthing like this makes sense? I have a class whose declario is as follows: namespace Utility { class Filebase : public fstream { public: and I want to declare a vector of objects of this class. Currently w/o vector I am using an object of this class as: string signal = ".s_"+layer+"_" + toString (iStage); Utility::Filebase temp (signal, ios::out); temp.create(signal); I want to use Filebase temp using a vector Is this possible in C++? Thanks Suddha Owner drawn button in VC++ 2005 cshell497-Jul-06 4:09 cshell49 7-Jul-06 4:09  I am looking for a way to add a 16 X 48 matrix of owner drawn buttons to a small utility I am developing in VC++ 2005. Can anyone direct me to specific articles or code to accomplish this task. I want to preserve 2d addressing. Initialization might go like: private: System::Windows::Forms::Button^ Mybutton[][]; Chris

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