Hi All, I want to get the full path of the running process (executable) without having root permission using C++ code. Can someone suggest a way to achieve this. on Linux platforms i can do it by using following way. char exepath[1024] = {0}; char procid[1024] = {0}; char exelink[1024] = {0}; sprintf(procid, "%u", getpid()); strcpy(e...
Hi all.. Was reading up a bit on my C++, and found this article about RTTI (Runtime Type Identification): http://msdn.microsoft.com/en-us/library/70ky2y6k(VS.80).aspx . Well, that's another subject :) - However, I stumbled upon a weird saying in the type_info-class, namely about the ::name-method. It says: "The type_info::name member fu...
I am writing some JNI code in C that I wish to test using cunit. In order to call the JNI functions, I need to create a valid JNIEnv struct. Does anyone know if there is a mocking framework for such a purpose, or who can give me some pointers on how to create a mock JNIEnv struct myself? ...
int l = strlen(s); warning C4244: '=' : conversion from '__w64 int' to 'int', possible loss of data I need to replace strlen with an inline function int l = new_strlen(s); But how do I portably get the result of the strlen into the int without a warning, and without using pragmas? I can guarantee there aren't more than 2 billion char...
Suppose we have some named enums: enum MyEnum { FOO, BAR = 0x50 }; What I googled for is a script (any language) that scans all the headers in my project and generates a header with one function per enum. char* enum_to_string(MyEnum t); And a implementation with something like this: char* enum_to_string(MyEnum t){ ...
I'm looking for a good book or website on how C++ works under the hood. Some topics might be virtual function lookup tables, function name mangling, class/struct relationship, etc. Even better, something that covers other languages as well (I'd love to know more about Perl's internals) Thanks! ...
how to concat two stl vectors? ...
This was an job placement interview I faced. They asked whether we can realloc Array, I told yes. Then They asked - then why we need pointers as most of the people give reason that it wastes memory space. I could not able to give satisfactory answer. If any body can give any satisfactory answer, I'll be obliged. Please mention any situat...
Hi, I am coding a program that reads data directly from user input and was wondering how could I (without loops) read all data until EOF from standard input. I was considering using cin.get( input, '\0' ) but '\0' is not really the EOF character, that just reads until EOF or '\0', whichever comes first. Or is using loops the only way to...
When creating an MDI Application with "Visual Studio" style using the AppWizard of VS2008 (plus Feature Pack), the CMainFrame class gets a method CreateDockingWindows(). Since I don't want all panes to be always visible but display them depending on the type of the active document, I made those windows to members of my views and also mo...
Often times I find myself using std::pair to define logical groupings of two related quantities as function arguments/return values. Some examples: row/col, tag/value, etc. Often times I should really be rolling my own class instead of just using std::pair. It's pretty easy to see when things start breaking down - when the code becomes ...
Hello all, Can anyone recommend a ready-to-use class/library compatible with C/C++/MFC/ATL that would parse iCal/vCal/Google calendar files (with recurrences)? It can be free or commercial. Thanks in advance! ...
Is there a good method for writing C / C++ function headers with default parameters that are function calls? I have some header with the function: int foo(int x, int y = 0); I am working in a large code base where many functions call this function and depend on this default value. This default value now needs to change to something ...
Here is an example of polymorphism from http://www.cplusplus.com/doc/tutorial/polymorphism.html (edited for readability): // abstract base class #include <iostream> using namespace std; class Polygon { protected: int width; int height; public: void set_values(int a, int b) { width = a; height = b; } ...
I am intercepting Win32 API calls a native dll or exe is doing from C# using some kind of hooking. In this particular case I am interested in DrawText() in user32.dll. It is declared like this in Win32 API: INT WINAPI DrawTextW(HDC hdc, LPCWSTR str, INT count, LPRECT rect, UINT flags) The LPRECT struct has the following signature (als...
How can my app get a list of the True Type Fonts that are available on Linux. Is there a standard directory where they are stored across different distributions? Or some other standard way to locate them? ...
I've been getting this undefined symbol building with this command line: $ gcc test.cpp Undefined symbols: "___gxx_personality_v0", referenced from: etc... test.cpp is simple and should build fine. What is the deal? ...
The C++ friend keyword allows a class A to designate class B as it's friend. This allows Class B to access the private/protected members of class A. I've never read anything as to why this was left out of C# (and VB.NET). Most answers to this earlier StackOverflow question seem to be saying it is a useful part of C++ and there are go...
I've looked at both the Named Parameter Idiom and the Boost::Parameter library. What advantages does each one have over the other? Is there a good reason to always choose one over the other, or might each of them be better than the other in some situations (and if so, what situations)? ...
One of classes in my program uses some third-party library. Library object is a private member of my class: // My.h #include <3pheader.h> class My { ... private: 3pObject m_object; } The problem with this - any other unit in my program that uses My class should be configured to include 3p headers. Movi...