c++

Problem cube mapping in OpenGL using DDS compressed images

Hi All, I am having trouble cube mapping when using a DDS cube map, I'm just getting a black cube which leads me to believe I have missing something simple, here's the code so far: DDS_IMAGE_DATA *pDDSImageData = LoadDDSFile(filename); //compressedTexture = -1; if(pDDSImageData != NULL) { int height = pDDSImageData->height; i...

Reading a stream in C++

I have the following code: ifstream initFile; initFile.open("D:\\InitTLM.csv"); if(initFile.is_open()) { // Process file } The file is not opening. The file does exist on the D: drive. Is there a way to find out exactly why this file cannot be found? Like an "errno"? ...

Optimal Eclipse CDT (C++) experience in March of 2010

I am a student who will be using C++ next quarter. I really enjoyed using the Galileo release of Eclipse with Java and I would like to continue using Eclipse for for C++ development. I am now experimenting with C++ development on Eclipse. I am running Eclipse 3.5 SR2 with CDT 6.02. My operating system is Windows 7 and I have installed M...

Qt C++ XML, validating against a DTD?

Is there a way to validate an XML file against a DTD with Qt's XML handling? I've tried googling around but can't seem to get a straight answer. If Qt doesn't include support for validating an XML file, what might be the process of implementing validation myself? Any good reference to start with in regards to validating XML against a spe...

How to add canvas in MFC Dialog?

I want to create an application which main window has canvas (or something where I can draw custom things) and some controls, like buttons and edit fields. But I got stuck about how to do it. I tried to create MFC with SDI, but how to add control to CDC..? I tried to create one dialog with buttons and edit fields, but which control refe...

Unable to run OpenMPI across more than two machines

When attempting to run the first example in the boost::mpi tutorial, I was unable to run across more than two machines. Specifically, this seemed to run fine: mpirun -hostfile hostnames -np 4 boost1 with each hostname in hostnames as <node_name> slots=2 max_slots=2. But, when I increase the number of processes to 5, it just hangs. ...

Qt send signal to main application window

I need a QDialog to send a signal to redraw the main window. But connect needs an object to connect to. So I must create each dialog with new and explicitly put a connect() every time. What I really need is a way of just sending MainWindow::Redraw() from inside any function and having a single connect() inside Mainwindow to receive them...

DirectX: Render to a screen buffer without using a render target

Hello, I'm writing an open source 2D game engine, and I want to support as many devices and platforms as possible. I currently only have Windows Mobile though. I'm rendering using DirectX Mobile, with DirectDraw as a fallback path. However, I've run into a bit of trouble. It seems that while the reference driver supports createRenderTa...

Unreachable breakpoint at execut(able/ing) code

I've got two DLLs, one in written in native C++ and the other in C++/CLI. The former is injected into a process, and at a later point in time, loads the latter. While debugging, I noticed that the native DLL's breakpoints were functioning correctly while the other's weren't, even though its code was being executed. The breakpoints show...

Switching to Java from C++: What are the key points?

I'm an experienced developer, but most of my OO programming experience has been with C++ (and a little Delphi). I'm considering doing some Android work, hence Java. Coming from the C++ background, what areas of Java are most likely to surprise/annoy/delight me? I felt sure this would already have been asked, but my searches haven't tur...

Choice for Socket Server Application: C/C++ or C#

What would be the most sensible choice for building a socket server application, assuming that you had the luxury of choosing between C/C++ or Csharp, and you intend to run multiple instances of the same server on both Windows and Linux servers? ...

Which Stroustrup book should I use?

I'm a C# programmer that is looking to branch out. I'm bored of writing business software and want to start getting into graphics programming and games/simulators. So I figured, although writing that stuff isn't impossible in managed code, the "right" way to do that would be to look to C++, of course focussing on the language first, th...

how can exec change the behavior of exec'ed program

I am trying to track down a very odd crash. What is so odd about it is a workaround that someone discovered and which I cannot explain. The workaround is this small program which I'll refer to as 'runner': #include <stdio.h> #include <unistd.h> #include <string.h> #include <errno.h> int main(int argc, char *argv[]) { if (argc == ...

Is there any LAME c++ wraper\simplifier (working on Linux Mac and Win from pure code)?

So I want to create simple pcm to mp3 C++ project. I want it to use LAME. I love LAME but It is realy biiig. so I need some kind of OpenSource working from pure code with pure lame code workflow simplifier. So to say I give it File with PCM and DEST file. Call something like LameSimple.ToMP3(file with PCM, File with MP3 , 44100, 16, MP...

How to change a QMenu text from english to russian by clicking a button

Please consider we have a menu which has text set "MyMenu" and I want to change the menu text by clicking a button in the same widget from "MyMenu" to "МойМеню". Could you bring a code snippet please for that operation? ...

How do I link a VS2008 C++ project as a DLL instead of a LIB?

I have the C++ source code in a Visual Studio project from another developer that compiles into a static lib. I need to change it so that it builds a dll from that code so that I can call it from C#. I went into the project properties in Visual Studio and changed the configuration type to a DLL. However, it now gives lots of linker er...

Using new (this) to reuse constructors

This came up recently in a class for which I am a teaching assistant. We were teaching the students how to do copy constructors in c++, and the students who were originally taught java asked if you can call one constructor from another. I know the answer to this is no, as they are using the pedantic flag for their code in class, and the ...

Using Fortran to call C++ Functions

I'm trying to get some FORTRAN code to call a couple c++ functions that I wrote (c_tabs_ being one of them). Linking and everything works just fine, as long as I'm calling functions that don't belong to a class. My problem is that the functions I want the FORTRAN code to call belong to a class. I looked at the symbol table using nm and ...

C++ Library Include

Hi all, I am relatively new to C++ and need to use a library for the first time. I was hoping someone would be able to show me how to properly [ link to / include ] the library. The library I want to use is the ID3 v3.8.8 that can be found here: http://id3lib.sourceforge.net/ I have downloaded the Windows binaries and now just need a ...

c++ std::map question about iterator order

Hi all, I am a C++ newbie trying to use a map so I can get constant time lookups for the find() method. The problem is that when I use an iterator to go over the elements in the map, elements do not appear in the same order that they were placed in the map. Without maintaining another data structure, is there a way to achieve in order...