Hi, I have a code a following (simplified version): #define MESSAGE_SIZE_MAX 1024 #defined MESSAGE_COUNT_MAX 20 class MyClass { public: .. some stuff private: unsigned char m_messageStorage[MESSAGE_COUNT_MAX*MESSAGE_SIZE_MAX]; }; I don't like defines, which are visible to all users of MyCalss. How can I do it in C++ style? ...
I have a struct: struct OutputStore { int myINT; string mySTRING; } If I create an array of type OutputStore as follows: OutputStore *OutputFileData = new OutputStore[100]; then I can address it with: OutputFileData[5].myINT = 27; But if I use a vector instead of an array: vector<OutputStore> *OutputFileData = new vect...
I use gdb (actually DDD), and getting an element out of container is impossible. So I typically end up rolling my own loop for debugging purposes... What do you do? ...
I link my C++ code against several libraries (a couple of which are heavily header-based), some of which haven't been updated in a while. I've been compiling my code with -Wall and Wextra on GCC 4.0 for a while with no warnings or errors. However, now that I'm using a newer version of GCC (4.3), a number of my files have been printing wa...
Note that I can conduct the research inside the boost source code, and may do this to answer my own curiosity if there isn't anyone out there with an answer. I do ask however because maybe someone has already done this comparison and can answer authoritatively? It would seem that creating a shared memory mapped file between processes, ...
I'm learning C++ with this book of Deitel: C++ How to Program, 5/e and some tutorials and resources of the internet, but I want to learn how I can develop Nintendo GameBoy Advance games using C++, but only in resources over the internet, because I don't want to spent money now with a thing that I only want to try. ...
Hi there, In my application I am creating an object pretty much like this : connect() { mVHTGlove = new vhtGlove(params); } and once I am about to close application I call this one : disconnect() { if (mVHTGlove) delete mVHTGlove; } This call always triggers a breakpoint with the following message : Windows has trigg...
A C++ compiler that I will not name lets you take the address of a literal, int *p = Clearly 42 is an r-value and most compilers refuse to do so. Why would a compiler allow this? What could you do with this other than shoot yourself in the foot? ...
I need to retrieve process information in a C/C++ program. I need at least basic things like CPU% and memory usage, but additional details would be useful as well. The problem is that I need to use this information in a portable program, that will run on multiple platforms: windows, linux, MAC and possibly Solaris too. Is there a libra...
When, if ever, can delete and free be used interchangeably in C++? My concern is as follows: Say there is an incorrect mixup in the use of malloc/free and new/delete (not to mention new[]/delete[]). However delete and free doing the same thing fortuitously so this goes uncaught in testing. Later this may lead to a crash in production. ...
Possible Duplicates: Why should we typedef a struct so often in C? Difference between struct and typedef struct in C++? What is the difference between the following type declarations? struct Person { int age; }; typedef struct { int age; }Person; I understand that struct { int age; }Person; Creates and ...
I have the following code (sorry for the large code chunk, but I could not narrow it down any more) template <bool B> struct enable_if_c { typedef void type; }; template <> struct enable_if_c<false> {}; template <class Cond> struct enable_if : public enable_if_c<Cond::value> {}; template <typename X> struct Base { enum { value ...
Without attempting to bind it ...
Hi, I have some native code which returns a jbyteArray (so byte[] on the Java side) and I want to return null. However, I run into problems if I simply return 0 in place of the jbyteArray. Some more information: The main logic is in Java, the native method is used to encode some data into a byte stream. don;t ask.. it has to be done li...
I have a code library written in plain old C++ (no .NET/managed code) and I'm porting the application that uses this code to C#. I'm faced with two options: Rewrite the C++ code in C# to achieve the same functionality; Compile the C++ as a DLL and use it as a library in the C# application. I'm relatively new to C# and am pretty unfam...
In Windows I can use Shell_NotifyIcon(). What is the linux equivalent of this function? Is it different in GNOME (gtk) and KDE (qt)? Can't find any tutorials in the Internet. ...
I am trying to create a simple ray tracer. I have a perspective view which shows the rays visibly for debugging purposes. In my example screenshot below I have a single white sphere to be raytraced and a green sphere representing the eye. Rays are drawn as lines with glLineWidth(10.0f) If a ray misses the sphere it is given color glC...
Hi, I'm building a cmake based build system for our product. The problem is that Visual Studio project, generated by cmake, doesn't display header files in solution browser. What I need to add in CMakeList.txt to list header files? The preferred solution is where no need to list each particular header file. Solution Here is a solution...
Possible Duplicate: Debugging techniques How can I improve my debugging skills? I am thinking in the context of C++ under UNIX, C#, and in general. Please suggest how I can improve in these areas in terms of: Approaches to take, where to start, and how to proceed. Tools to use, and how use them effectively. Recommended materi...
I just made a Swap routine in C# like this: static void Swap(ref int x, ref int y) { int temp = x; x = y; y = temp; } It does the same thing that this C++ code does: void swap(int *d1, int *d2) { int temp=*d1; *d1=*d2; *d2=temp; } So are the ref and out keywords like pointers for C# without using unsafe code...