Hi, Say i have a file, t.txt, that contains the following two lines: one two Now, I would like to write a program which will #include that file somehow and print its contents, nothing more. That is, i want the contents of that file to appear in my code as a static text, at compile time. Any ideas? The reason im asking is this: I ...
How can I write from a file to shared memory using the Win32 API? I have this code: hFile = CreateFile("input.map", GENERIC_READ | GENERIC_WRITE, FILE_SHARE_READ, NULL, OPEN_ALWAYS, FILE_ATTRIBUTE_NORMAL, NULL); hMapFile = CreateFileMapping(hFile, NULL, PAGE_READWRITE, 0, 0, TEXT("SharedObject")); lpMapAddre...
I'm procedurally generating 128-byte blocks with some set n-byte header reserved for machine-language functions that I'm simply calling via in-line assembly. They aren't defined anywhere and are generated at run-time into pages allocated into memory with access for execution. However, I want to reserve the end (128 - n) bytes of these ...
Say I want to read the contents of a file using basic_filebuf. I have a type called boost::uintmax_t which has a size of 8 bytes. I am trying to write the following: typedef basic_filebuf<uintmax_t> file; typedef istreambuf_iterator<uintmax_t> ifile; file f; vector<uintmax_t> data, buf(2); f.open("test.txt", std::ios::in | std::ios::b...
I'm building a matrix template. There are operators, functions and all work fine. Except when I try to convert a double type matrix to int type matrix (or vice versa). = operator cannot be defined so its not possible to override it for basic_Matrix2D and basic_Matrix2D external to class. I know I can write in class = operators to convert...
Imagine I have a C++ class Foo and a class Bar which has to be created with a constructor in which a Foo pointer is passed, and this pointer is meant to remain immutable in the Bar instance lifecycle. What is the correct way of doing it? In fact, I thought I could write like the code below but it does not compile.. class Foo; class ...
With a Qt DBus proxy built on QDbusAbstractInterface (via qdbusxml2cpp), what's the best way to handle the service/object you want to interface to not being available when you start? Note: I'm not interested in simply knowing it (you can use BlahService.isValid() to find that out); I want to be able to know if it's valid, and know when ...
struct { char a; int b; } x; Why would one define a struct like that instead of just declaring it as: struct x { char a; int b; }; Thanks ...
I am writing an application where it would be helpful to automatically switch between having Windows XP's desktop in dualview or cloned. The application uses a small wxWidgets window for the GUI. It would be nice to have a button within the GUI that could easily switch between dualview and cloned. Is there a c/c++ library that gives...
I haven't done C++ for about three years and looking to get back and ready. What is the best way? any open source projects that I might want to look at to recall all the details and be ready for interviews? I started reading (again) C++ Primer 5th edition but was wondering whether there's more efficient way since I did program in C++ for...
So, I'm a brand new CS student, on a Mac, and I'm learning C++ for one of my classes. And I have a dumb question about how to compile my super basic C++ program. I installed Xcode, and I'm looking through the documentation to try and figure out how to use it (and I highly suspect it's extremely overpowered for what I'm doing right now)...
Static array initialization... with const pointers... to overloaded, templatized member functions. Is there a way it can be done (C++03 standard code)? I mean, if I have the template class template <class T1, class U1, typename R1> class Some_class { public: typedef T1 T; typedef U1 U; typedef R1 R; R operator()(T pr...
I'm having a minor issue dealing with pointers to overloaded member functions in C++. The following code compiles fine: class Foo { public: float X() const; void X(const float x); float Y() const; void Y(const float y); }; void (Foo::*func)(const float) = &Foo::X; But this doesn't compile (the compiler complains that ...
I have code that uses Microsoft Active Accessbility to get information about the active window. Strangely, I can only enumerate all the controls in a window (in this case Internet Explorer) if I use a process. If I spawn a thread and call the EXACT same code, MSAA will return only a subset of controls. Usually just the menu bar and toolb...
I am trying to open raw data file(s) that contain some numbers using VC++. The numbers could be 8/16/24 bit. I have a prior knowledge of that for a given file. Can I use C++ templates to create array variables to store numbers read from files based on what bit-depth they are? Something on the lines of this pseudo code: if(BitDepth==8) ...
I'm trying to make a timer in c++. I'm new to c++. I found this code snippet UINT_PTR SetTimer(HWND hWnd, UINT_PTR nIDEvent, UINT uElapse, TIMERPROC lpTimerFunc); I put it in my global variables and it tells me Error 1 error C2373: 'SetTimer' : redefinition; different type modifiers I'm not sure what this means. Is there a more p...
Among the many things Stack Overflow has taught me is what is known as the "most vexing parse", which is classically demonstrated with a line such as A a(B()); //declares a function While this, for most, intuitively appears to be the declaration of an object a of type A, taking a temporary B object as a constructor parameter, it's act...
How do you add code to these events for native c++. I couldnt find a WM_LOSTFOCUS OR WM_GOTFOCUS; I only found WM_SETFOCUS. I need code to happen when my window loses focus, and regains it. Thanks ...
I need to print records in a grid view, and need to preview it before printing. I want to know whether or not there is a strong library for printing preview? And with the library I can change the position, layout of the data to print. More important: I need to change the data's layout, how can I do that? ...
Hello everyone! I am making an application in C++ for windows, and one of its prime functions has to be directory and file io (searching, creating, etc). I basically want to be able to recursively search directories, and most of all be able to get the file names in a directory. Then I want to be able to get the directory names in the cur...