I know this question has been posted before... but I haven't found any answer yet (besides from the generic answers about how XLL are actually DLL, etc). Has anybody out there been successful calling a XLL from say C# (using DllImport) without having to load Excel with the XLL loaded as an addin? Basically, you would have to create a sp...
Is there some equivalent library or function that will give me the next combination of a set of values like next_permutation in does for me? ...
#include <list> #include <set> #include <iterator> #include <algorithm> using namespace std; class MyContainer { public: string value; MyContainer& operator=(const string& s) { this->value = s; return *this; } }; int main() { list<string> strings; strings.push_back("0"); strings.push_back("1"); ...
Sorry for the confusing title, but it basically says it all. Here's the structures I'm using (found in OpenCV) : struct CV_EXPORTS CvRTParams : public CvDTreeParams { bool calc_var_importance; int nactive_vars; CvTermCriteria term_crit; CvRTParams() : CvDTreeParams( 5, 10, 0, false, 10, 0, false, false, 0 ), ca...
In gcc I can do compile-time warnings like this: #if !defined(_SOME_FEATURE_) #warning _SOME_FEATURE_ not defined-- be careful! #endif But in Visual Studio this doesn't work. Is there an alternative syntax for #warning? ...
Hi, I am a C++ / Java programmer and the main paradigm I happen to use in everyday programming is OOP. In some thread I read a comment that Type classes are more intuitive in nature than OOP. Can someone explain the concept of type classes in simple words so that an OOP guy like me can understand it? ...
Call main.lua script at each game loop iteration - is it good or bad design? How does it affect on the performance (relatively)? Maintain game state from a. C++ host-program or b. from Lua scripts or c. from both and synchronise them? (Previous question on the topic: http://stackoverflow.com/questions/2674462/lua-and-c-separation-of-d...
Well! I feel really stupid for this question, and I wholly don't mind if I get downvoted for this, but I guess I wouldn't be posting this if I had not at least made an earnest attempt at looking for the solution. I'm currently working on Euler Problem 4, finding the largest palindromic number of two three-digit numbers [100..999]. As...
Hi! I have a working prototype of a game engine and right now I'm doing some refactoring. What I'm asking for is your opinion on usage of the following C++ coding patterns. I have implemented some trivial algorithms for collision detection and they are implemented the following way: Not shown here - class constructor is made private a...
Why copy constructor must be passed its parameter by reference? ...
My application is compiled on a development PC with a manifest 762: However at runtime, on another release PC, the application uses the 4053 version of the file. c:\windows\winsxs\x86_microsoft.vc80.crt_1fc8b3b9a1e18e3b_8.0.50727.4053_x-ww_e6967989\MSVCR80.DLL Somewhere along the execution of my application I get a runtime error...
I recently came upon a Microsoft article that touted new "defensive enhancements" of Windows 7. Specifically: Address space layout randomization (ASLR) Heap randomization Stack randomization The article went on to say that "...some of these defenses are in the core operating system, and the Microsoft Visual C++ compiler offers o...
I have a process handle with HANDLE hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, 0, THE_PROCESS_ID); How can I get the username of the user that is running the process? I am using unmanaged code (no .NET). ...
I am writing a multi-threaded program using OpenMP in C++. At one point my program forks into many threads, each of which need to add "jobs" to some container that keeps track of all added jobs. Each job can just be a pointer to some object. Basically, I just need the add pointers to some container from several threads at the same tim...
How do I use GDI+ with C++Builder? Can someone give me a simple example of creating a surface and drawing a circle on it? ...
Before .Net, before math coprocessors, before IEEE-574, Microsoft defined a bit pattern for floating-point numbers. Old versions of the C++ compiler happily used that definition. I am writing a C# app that needs to read/write such floating-point numbers in a file. How can I do the conversions between the 2 bit formats? I need conversion...
Can I create a function inside a class without defining it in the header file of that class? ...
Hi! I am trying to find some optimal solutions in C++ coding patterns, and this is one of my game engine - related questions. Take a look at the game object declaration (I removed almost everything, that has no connection with the question). // Abstract representation of a game object class Object : public Entity, IRenderable...
How can I convert a integer to its bit representation. I want to take an integer and return a vector that has contains 1's and 0's of the integer's bit representation. I'm having a heck of a time trying to do this myself so I thought I would ask to see if there was a built in library function that could help. Thanks! Edit: Excellent i...
I have an unsorted vector of eigenvalues and a related matrix of eigenvectors. I'd like to sort the columns of the matrix with respect to the sorted set of eigenvalues. (e.g., if eigenvalue[3] moves to eigenvalue[2], I want column 3 of the eigenvector matrix to move over to column 2.) I know I can sort the eigenvalues in O(N log N) via ...