Hi there, i need a Function Pointer from a base class. Here is the code: class CActionObjectBase { ... void AddResultStateErrorMessage( const char* pcMessage , ULONG iResultStateCode); ... } CActionObjectCalibration( ): CActionObjectBase() { ... m_Calibration = new CCalibration(&CActionObjectBase::AddResultStateErrorMessage); ...
Hi all, I'm using Eclipse CDT and Boost.Test(with Boost.Build). I would like Eclipse to parse output of Boost.Test generated during by run of test suites during build. Does anybody know how to achieve this? Thanks in advance ...
#include<iostream.h> int main() { int a=10; int &b=a; cout<<"B"<<'\n'<<b; cout<<"A"<<'\n'<<a; b=100; cout<<"B"<<'\n'<<b; cout<<"A"<<'\n'<<a; int c=20; b=c; cout<<"C"<<'\n'<<c; cout<<"B"<<'\n'<<b; } ...
I know, it has been made quite clear in a couple of questions/answers before, that volatile is related to the visible state of the c++ memory model and not to multithreading. On the other hand, this article by Alexandrescu uses the volatile keyword not as a runtime feature but rather as a compile time check to force the compiler into fa...
GCC seem to think that I am trying to make a function call in my template function signature. Can anyone please tell me what is wrong with the following? 227 template<class edgeDecor, class vertexDecor, bool dir> 228 vector<Vertex<edgeDecor,vertexDecor,dir>> Graph<edgeDecor,vertexDecor,dir>::vertices() 229 { 230 return V; 231 }; GCC i...
I have two copy constructors Foo(Foo &obj){ } Foo(Foo *obj){ } When will the second copy constructor will get called? ...
I have been using the macro solution, as it is outlined here. However, there is a mention on how to view them without macros. I am referring to GDB version 7 and above. Would someone illustrate how? Thanks ...
Hi I was trying to output unicode string to a console with iostreams and failed. I found this: Using unicode font in c++ console app and this snippet works. SetConsoleOutputCP(CP_UTF8); wchar_t s[] = L"èéøÞǽлљΣæča"; int bufferSize = WideCharToMultiByte(CP_UTF8, 0, s, -1, NULL, 0, NULL, NULL); char* m = new char[bufferSize]; WideChar...
I'm trying to create a Gradient Brush in windows mobile as follows: HBITMAP hBitmap = CreateBitmap(16, 16, 1, 16, NULL); HDC hDC = CreateCompatibleDC(NULL); HBITMAP hPrevious = SelectObject(hDC, hBitmap); TRIVERTEX vert[2]; GRADIENT_RECT gRect; //... fill in vert and gRect GradientFill(hDC, vert, 2, &gRect, 1, GRADIENT_FILL_RECT_V); Sel...
Consider the following code: struct Calc { Calc(const Arg1 & arg1, const Arg2 & arg2, /* */ const ArgN & argn) : arg1(arg1), arg2(arg2), /* */ argn(argn), coef1(get_coef1()), coef2(get_coef2()) { } int Calc1(); int Calc2(); int Calc3(); private: const Arg1 & arg1; const Arg2 & arg2; // ... const...
I am trying to write data stored in a binary file using turbo C++. But it shows me an error could not find an match for ostream::write(long *, unsigned int) I want to write a 4 byte long data into that file. When i tries to write data using char pointer. It runs successfully. But i want to store large value i.e. eg. 2454545454 Which ...
Hi guys, I didn't find this in documentation: how to get local time (better formatted) with boost? ...
After reading several questions regarding problems with compilation (particularly C++) and noticing that in many cases the problem is a missing header #include. I couldn't help to wonder in my ignorance and ask myself (and now to you): Why are missing headers not automatically checked and added or requested to the programmer? Such feat...
is there any way to reserve memory space to be used later by default Windows Memory Manager so that my application won't run out of memory if my program don't use space more than I have reserved at start of my program? ...
I'm trying to figure out if the boost::multi_array constructor or resize method can throw a bad_alloc exception (or some other exception indicating the allocation or resize failed). I can't find this information in the documentation anywhere. Clarification (added from comment): This is a scientific algorithm that can fall back to a l...
Is it possible to disable texture colors, and use only white as the color? It would still read the texture, so i cant use glDisable(GL_TEXTURE_2D) because i want to render the alpha channels too. All i can think of now is to make new texture where all color data is white, remaining alpha as it is. I need to do this without shaders, so ...
I have programmed an emulator, but I have some doubts about how to organizate it properly, because, I see that it has some problems about classes connection (CPU <-> Machine Board). For example: I/O ports, interruptions, communication between two or more CPU, etc. I need for the emulator to has the best performance and good understandi...
I have a library written in C++/CLI and I want to open it up. I want it to be as cross-platform as possible and be able to write bindings to it for other languages to use (Java, Python, etc, etc). To do this, the library needs to be in plain C++ for maximum flexibility. I figure that the logical structures are already there, I just need ...
Is there a difference between foo and bar: class A { Object __o; void foo(Object& o) { __o = o; } void bar(Object o) { __o = o; } } As I understand it, foo performs no copy operation on object o when it is called, and one copy operation for assignment. Bar performs one copy operation on object o when it is ...
We're developing a Qt project using the Code::Blocks IDE with the QtWorkbench plugin. We'd like to take advantage of Qt's unit testing modules to test our code, but from what I've read online, the only way to do so is to use qmake to manually create a new "project" and makefile for each unit test and then to build and execute that projec...