Recent questions tagged C++

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c++ - What is the order of destruction of function parameters?

This is a follow-up to my previous question What is the order of destruction of function arguments? because I ... p1, p2 and p3 destroyed? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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c++ - Is it possible to include a library from another library using the Arduino IDE?

I'm trying to write an Arduino library (effectively a C++ class) which itself references another library I have ... ? Is there a workaround? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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c++ - Where can I see the what() message from an unhandled std::exception in Visual Studio 2012?

Is there a way to see the explanatory string from an unhandled exception? I'm using Visual Studio 2012 Express ... Output Settings set to On. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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c++ - Forward Declaring enum class not working

In State.h I have enum class StateID : unsigned int; In State.cpp I have enum class StateID : unsigned int { ... the compiler flag for c++11. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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c++ - Difference between GCC binary literals and C++14 ones?

C++14 seems to be coming and compilers are already trying to implement the core features of this new ... more about possible incompatibilities? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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c++ - How to get NDK debugging to work in Android Studio?

Android Studio doesn't stop at breakpoints in C++ code, this is what i've done so far : In AndroidManifest. ... working. Thank you for your help See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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c++ - Appending to CMAKE_C_FLAGS

I'm using CMake for a project that comes in two versions, one of which requires -lglapi and the other does ... did wrong here. Thanks, Tobias See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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c++ - _stricmp with mingw and c++0x not existent?

I'm currently trying to use googletest with MinGW and -std=c++0x but it complains that _stricmp is not declared in this ... is it gone in C++0x? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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c++ - How to delete warnings LNK4217 and LNK4049

I have warnings on the link step. These warnings appear only in release mode. My program is composed of two parts: ... and how to delete them ? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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c++ - How to handle incorrect values in a constructor?

Please note that this is asking a question about constructors, not about classes which handle time. Suppose I have ... I may have missed? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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c++ - When is a `thread_local` global variable initialized?

Consider the following example (lock guards on cout omitted for simplicity). #include <future> #include <iostream> ... on its first use? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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c++ - Do I have the guarantee that sizeof(type) == sizeof(unsigned type)?

The sizeof char, int, long double... can vary from one compiler to another. But do I have the guarantee ... integral type is the same ? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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c++ - Performance impact of virtual inheritance

I am considering using virtual inheritance in a real-time application. Does using virtual inheritance have a ... base class would be. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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317 views

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c++ - Copy std::vector into std::array

How do I copy or move the first n elements of a std::vector<T> into a C++11 std::array<T, n>? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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c++ - How get next (previous) element in std::list without incrementing (decrementing) iterator?

Say I have an std::list<int> lst and some std::list<int>::iterator it for iterating through the list. ... and increment(decrement) the copy? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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513 views

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c++ - Encoding a D3D Surface obtained through Desktop Duplication using Media Foundation

I want to encode Desktop Duplication API frames to send over the network after encoding them with Media Foundation. I ... what needs to be done. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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292 views

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c++ - basic playback with programmatically created windows media player

I was trying to "just quickly integrate" the Windows Media Player via COM to play single files from the local ... see the question for that. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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424 views

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c++ - How to use SQLConnect or SQLDriverConnect

I am trying to connect to a MS-SQL server on the internet. What should I put on the ServerName ... error HY024 - Invalid attribute value See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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277 views

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c++ - Using an embedded .dll in an executable

Okay. So I know there's lots of questions about how to embed dlls inside exes, but my problem is rather ... before its presence is checked for? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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c++ - Updating text in a C Win32 API STATIC control drawn with WS_EX_TRANSPARENT

I have window with some STATIC labels and BUTTONs on it. I make all the LABELS transparent background so I can ... Mark, Thank you this works. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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276 views

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c++ - Tracing which process that has opened a particular file

From kernel mode in Windows I'm able to intercept and monitor virtually all actions performed on a particular ... Thanks in advance. /Robert See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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305 views

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c++ - Linked list head double pointer passing

I have seen this in some book/ tutorial. When you pass in the head pointer (of linked list) into a function ... Am I missing something ? Thanks, See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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c++ - Typedeffing a function (NOT a function pointer)

typedef void int_void(int); int_void is a function taking an integer and returning nothing. My question is: can it be ... , test2; test = test2; See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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571 views

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c++ - Calling functions in a DLL loaded by another process

I have a DLL that I inject into another process but I want to be able to call the exports on that DLL from ... example code on how this is done? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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289 views

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c++ - Check if a Windows driver exists for a given Device ID

I'm writing a Windows library using C++. This library should be able to check if the device driver of a specific ... listed (or any other way)? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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329 views

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c++ - Quaternion - Rotate To

I have some object in world space, let's say at (0,0,0) and want to rotate it to face (10,10,10). How do i do this using quaternions? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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386 views

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c++ - Which of these new expressions with char arrays are well-formed?

For the following program: int main() { new char[4] {"text"}; // #1 new char[5] {"text"}; / ... changed in previous versions of the language. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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382 views

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c++ - Initialize multidimensional array with zeros

In C++ you can initialize a one dimensional array with 0 with a code like this: int myarray[100] = { ... initialize it manually with for loops? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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