Category "c++"

Enter is converted to gibberish code after system()

When I use C++ to invoke Python program output (By system command with parameters), it outputs gibberish code at the end of line. After that, I couldn't input a

Zip directory recursion

I am working on creating zip archive using old Qt - ZipWriter class. The problem is when I want to add the directory. The default Qt code for addDirectory metho

Checking the last accessed files on Windows 10 in C++

I'm writing a small tool to help my workflow as an artist, and it'd be neat if it could check a list of recently accessed files on my computer for a *.psd (phot

Returning MIME data from a function in Qt

I am trying to create a class with drag and drop. I want it to be used as a base class for future derived classes. I want derived classes to specify MIME data f

Inline out-of-class member function definition [duplicate]

struct S { void foo(); }; inline void S::foo() {} Can't figure out from the documentation if this function is considered inline or not.

UWP Extended Foreground Session

So, I have made a few attempts to create an app in UWP, using C++/CX, and besides dreading the syntax, I had some fun. I ran into troubles when I attempted to p

Why is it skipping Sprite.setTexture()?

I have been trying to run my code and it has been skipping this line this->tileSprite.setTexture(this->tileTexture); within the constructor of my class T

How to sort vector of structs by given field?

I need to sort vector of structures by a given field. To anyone who faces the same problem: I just made my own sort function and there you can pass in lambda as

Changing a defined constant in a dll compilated file from external application

Please, help me to figure out this. I have the following code in C (example): #define cutoff 22; double age; if (age == cutoff) { cout << "Good morning

What is atltime.h in MFC

Can someone will explain to me What is atltime.h ? I don't know how this header works. I tried to search it on google but i didn't get an answer of what atltime

How to know when a char* library function arg needs an array it can modify, not a char pointer

I am new to C programming. and I know char * and char[] array are different. Yet, you can deduct the char[] to char * when it comes to a function param. So func

Trouble extracting numbers from helib::Ctxt ciphertext

I'd like to access directly to the numbers composing the ciphertext Ctxt from HElib, but reading the documentation I don't seem to find anything that can help m

Detected memory leaks in shared_ptr copy constructor

All the code is included in this post. For some reason, it tells me that, a memory leak is happening at shared_ptr.hpp(60), assuming this must be line 60 here.

Fastest way to draw filled quad/triangle with the SDL2 renderer?

I have a game written using SDL2, and the SDL2 renderer (hardware accelerated) for drawing. Is there a trick to draw filled quads or triangles? At the moment I'

The term 'g++' is not recognized as the name of a cmdlet, function, script file, or operable program [closed]

Could you guys tell me why a simple c++ file can't work and gives me errors in the terminal.Is it a simple error? Thank you.The photo is on th

How to get std array size in a constant expression?

Consider this code: #include <array> #include <cstddef> struct A { std::array<std::size_t, 4> test; void method() { std::size

is it safe to use boost::asio::streambuf as both an istream and an array as string_view?

For example, could there be problems with the memory work inside this buffer if I use code like this? Can I use the input stream and use sv (string_view) with t

Convert float pointer returned by c++ DLL function to float C#

extern The return is a pointer to the internal array containing results info. It should not be modified results values are output as a float array (mantissa

building a nested JSON

Some data files that I need to read / parse have headers in the style: level0var = value0 level0var.level1field = value1 level0var.level1array[11].level2field

Using Qt+ICC on Windows

I have a question about the use of the Intel C++ compiler on Windows for compiling Qt projects. I know that officially ICC is supported only by Qt on UNIX, but