v_janssens

Hi there, I'm a Visual Basic novice and have written a very simple GUI which I want to use to run a c++ program. I'm wondering how I would write the button click event to call the C++ program? I assume there's probably a simple way to do this but …

I am using _getcwd() to get the full path of the current working directory but I am having a strange problem with this: When I run the program from within Visual Studio _getcwd returns "F:\...\ProgramName\bin" to which I append "\Debug\config.txt" to give the path of a text file. However, when …

I am trying to call a C++ program for a Windows Forms App and to subsequently wait until the exe finishes. So far here is what I have: [CODE] Dim ProcessID As Integer Dim ProcessHandle As Integer ProcessID = Shell(filepath_exe, AppWinStyle.NormalFocus) ' Check the Shell command worked If ProcessID <> …

Hi, In brief, I have written a program in C++ that reads data from a text file, does 'stuff' with that data and then writes the results to a number of separate file. Separately I've written a simple GUI for this program using Visual Basic (allows the user to select …

I have a class Node and want to declare an initially unknown number of instances of this class at run-time. First the program determines the number of nodes (num_n) from the user and then I want to define num_n objects. I have crudely got around this by defining a maximum …

Hi, I have a C++ program (built in Visual Studio 2010) and want to add a user interface to package it up. I've been reading around about windows forms and the win32 API, and found loads of tutorials showing how to create interfaces but I can't find any advice on …

I'm running a structural analysis program in VS2010 which iterates through a loop up to 4000 times. The program keeps breaking on me around the 960th loop and gives the following error Unhandled exception at 0x0040cd1d in Structural Analysis Program.exe: 0xC000005: Access violation writing location 0x00000000. The error seems to …

I have a class Matrix2D where the matrix is defined as vector<double> elements. I'm trying to use the function Gauss() to perform gaussian elimination on a matrix a [CODE]bool Gauss(Matrix2D& a) { [INDENT][/INDENT]//Gaussian elimination routine }[/CODE] The function itselt works perfectly and if I view the matrix a just before …

Hi, I'm writing a program for structural engineers that consists of a number of inherited classes. Specifically, I have a main() file which includes a class [I]element[/I] which includes a class [I]node[/I] which includes a class [I]matrix[/I]. [I]element[/I] includes variables of type [I]matrix[/I] and [I]node[/I], and [I]node[/I] includes variables of …

Hi there, Im a structural engineer (so excuse my limited knowledge of C++ and programming in general) and write analysis programs using microsoft visual studio. I've developed a few programs that run within VS but am wondering how I would go about making these stand alone apps/programs anyone could use …

Hi, I'm trying to find a way to calculate the eigenvalues and eigenvectors for a square symmetrical matrix. I have used MATLAB to do this before and the solution was as simple as; [V,D] = eig(A) I'm wondering if there is a simple solution like this in c++. I am …