Hi, I'm trying to create more useful debug messages for my class where store data. My code is looking something like this #include <QAbstractTableModel> #include <QDebug> /** * Model for storing data. */ class DataModel : public QAbstractTableModel { // for debugging purposes friend QDebug operator<< (QDebug d, const Data...
Is there anyway with Windows api to detect whether a Windows 7 computer's network connection is an internet connection or a LAN connection without internet access? Windows 7 and Vista indicate this in the network icon (Local only v. Local and Internet), is there anyway to grab that information progammatically? ...
I am trying to extract the current user's account picture in Windows 7, but I can't seem to figure out where it is located. I have found that the picture is sometimes written to the User's temp folder, but only after performing certain actions. It isn't always guaranteed to be there. Has anyone had any luck extracting this image? Thanks!...
I am manipulating vectors of objects defined as follow: class Hyp{ public: int x; int y; double wFactor; double hFactor; char shapeNum; double* visibleShape; int xmin, xmax, ymin, ymax; Hyp(int xx, int yy, double ww, double hh, char s): x(xx), y(yy), wFactor(ww), hFactor(hh), shapeNum(s) {visibleShape=0;shapeNum=-1;}; //Copy constru...
I've just started with C++, and maybe there's something that I'm doing wrong here, but I'm at a loss. When I try to build the solution, I get 4 LNK2005 errors like this one: error LNK2005: "public: double __thiscall Point::GetX(void)const " (?GetX@Point@@QBENXZ) already defined in CppSandbox.obj (there's one for each get/set method, an...
I'm looking for open-source projects that make use of two things: (1) C++ and (2) XML data binding. For those who don't know, data binding tools make use of XML schema and code generators such as Codesynthesis xsd, Liquid Technologies. I know CIAO/DAnCE project, an implementation of CORBA Component Model that uses XML Schema Compiler (XS...
Not sure why I'm getting this error. I have the following: int* arr = new int[25]; int* foo(){ int* i; cout << "Enter an integer:"; cin >> *i; return i; } void test(int** myInt){ *myInt = foo(); } This call here is where I get the error: test(arr[0]); //here i get invalid conversion from int to int** ...
I'm fairly new to Lua, I've been working on trying to implement Lua scripting for logic in a Game Engine I'm putting together. I've had no trouble so far getting Lua up and running through the engine, and I'm able to call Lua functions from C and C functions from Lua. The way the engine works now, each Object class contains a set of var...
How does ML perform the type inference in the following function definition: let add a b = a + b Is it like C++ templates where no type-checking is performed until the point of template instantiation after which if the type supports the necessary operations, the function works or else a compilation error is thrown ? i.e. for example,...
#include <list> using std::list; int main() { list <int> n; n.push_back(1); n.push_back(2); n.push_back(3); list <int>::iterator iter = n.begin(); std::advance(iter, n.size() - 1); //iter is set to last element } is there any other way to have an iter to the last element in list? ...
Allegedly, Visual C++ 2010 Express, unlike previous versions, supports third party extensions. I just downloaded the release candidate SDK for Visual Studio 2010, but the installer fails saying that I don't have Visual Studio installed (which is true since i use Visual C++ 2010 Express). Have I missed something? Is there a version of th...
Are there any technical reasons for the use of the underscore in names like (for example) scoped_lock in the Boost library? Why not call it `ScopedLock? Please note I am not asking about stylistic reasons. ...
Hello, I did not see anything that address my particular code problem. I have a bool function in a class; the bool function is named: bool Triplet::operator ==(const Triplet& operand)const { if( (data[0] == operand.data[0]) && (data[1] == operand.data[1]) && (data[2] == operand.data[2])) return true;...
I use Java Runtime.getRuntime().exec(command) to create a subprocess and print its pid as follows: public static void main(String[] args) { Process p2; try { p2 = Runtime.getRuntime().exec(cmd); Field f2 = p2.getClass().getDeclaredField("pid"); f2.setAccessible(true); System.out.println( f2.get( p2 ) ); } catch (...
I'm trying to port the unix utility ldd to windows, because dependency walker and cygcheck don't quite give me the usage I'm looking for. (also for the learning experience) Ive been looking all over MSDN, for a windows API that lists dll dependencies of an executable, or even the storage format in the complied exe (just to filter it ou...
Hi, I'm using Visual Studio 2008 with the Boost v1.42.0 library. If I use an enum as the template argument, I get a compile error when adding a value using push_back(). The compiler error is: 'T': is not a legal base class and the location of the error is move.hpp line 79. #include <boost/interprocess/containers/vector.hpp> class Te...
I have some code here, and don't really understand the ">>" and the "&". can someone clarify? buttons[0] = indata[byteindex]&1; buttons[1] = (indata[byteindex]>>1)&1; rawaxes[7] = (indata[byteindex]>>4)&0xf; ...
I keep getting a segmentation fault when the readAuthor() method is called. Does anybody know why this happens? I am supposed to use dynamic arrays, I know this would be so easy if I was using static array. #include <iostream> #include <string> #include <cstring> #include <cstdlib> using namespace std; /** declare arrays **/ int* isbn...
I searched for examples on how to create a simple multithreaded app that does something similar to this: #include <iostream> using namespace std; int myConcurrentFunction( ) { while( 1 ) { cout << "b" << endl; } } int main( ) { // Start a new thread for myConcurrentFunction while( 1 ) { cout << ...
Hi, I am trying to create a Custom QGraphicsItem button as shown by Fred here. The code which he posted can be found here. The problem is when I try and compile the code I get the following two errors: /usr/include/qt4/QtGui/qgraphicsitem.h ‘QGraphicsItem::QGraphicsItem(const QGraphicsItem&)’ is private /usr/include/qt4/QtCore/qobjec...