3,596 questions with C++-related tags

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2 answers

There is a red wavy line but there is no error. Bug or settings?

void ff(int* p) { std::cout<< *p; }; void ff(unsigned int i) { i++; } void func(void (&&fp)(int*)) { int i = 6; fp(&i); } //no other overloaded versions of func ...... func(ff); I compiled with no error or warning, but there is a…

Visual Studio
Visual Studio
A family of Microsoft suites of integrated development tools for building applications for Windows, the web and mobile devices.
4,765 questions
C++
C++
A high-level, general-purpose programming language, created as an extension of the C programming language, that has object-oriented, generic, and functional features in addition to facilities for low-level memory manipulation.
3,596 questions
asked 2024-06-16T06:08:44.82+00:00
zzzhhh 40 Reputation points
edited an answer 2024-06-18T04:33:02.57+00:00
zzzhhh 40 Reputation points
1 answer One of the answers was accepted by the question author.

failed to load dll in native c++ IIS module?

I am trying to create c++ Native Module. url but when I register it .and start the web the AppPool Stopped.

Internet Information Services
C++
C++
A high-level, general-purpose programming language, created as an extension of the C programming language, that has object-oriented, generic, and functional features in addition to facilities for low-level memory manipulation.
3,596 questions
asked 2024-06-16T01:25:33.6566667+00:00
mc 3,906 Reputation points
accepted 2024-06-18T04:11:26.3266667+00:00
mc 3,906 Reputation points
2 answers

How to Detect Initial DPI changes in a WPF Application while Scaling according to Per Monitor Aware in Variable Dynamic Screen Resolution?

In daily life we have to deal with a lot of different types of display size it may be mobile or may be a 4k monitor. The screen resolution vary from display to display. Here another important factor is DPI (Display per inch) which is mainly a scaling…

Windows
Windows
A family of Microsoft operating systems that run across personal computers, tablets, laptops, phones, internet of things devices, self-contained mixed reality headsets, large collaboration screens, and other devices.
4,940 questions
Windows Presentation Foundation
Windows Presentation Foundation
A part of the .NET Framework that provides a unified programming model for building line-of-business desktop applications on Windows.
2,696 questions
C#
C#
An object-oriented and type-safe programming language that has its roots in the C family of languages and includes support for component-oriented programming.
10,489 questions
C++
C++
A high-level, general-purpose programming language, created as an extension of the C programming language, that has object-oriented, generic, and functional features in addition to facilities for low-level memory manipulation.
3,596 questions
asked 2024-05-27T23:46:16.7233333+00:00
MERUN KUMAR MAITY 531 Reputation points
commented 2024-06-18T03:03:16.4133333+00:00
Hongrui Yu-MSFT 590 Reputation points Microsoft Vendor
2 answers

C++ Inner class construction problem

Hi to all, I can't figure out what is the problem with the following simple C++ code! the inner RegClass class within Test class won't construct. Any ideas? #include <stdio.h> class RegClass { public: RegClass() {…

C++
C++
A high-level, general-purpose programming language, created as an extension of the C programming language, that has object-oriented, generic, and functional features in addition to facilities for low-level memory manipulation.
3,596 questions
asked 2024-06-17T15:32:34.9566667+00:00
S. Beniashvili 0 Reputation points
answered 2024-06-18T02:17:27.5266667+00:00
Minxin Yu 10,461 Reputation points Microsoft Vendor
1 answer

C++20 Modules in Shared Libraries

Hello, Follow-up question to https://learn.microsoft.com/en-us/answers/questions/1665106/how-to-use-c-20-modules-in-shared-libraries I’ve been exploring the use of C++20 modules in shared libraries and I understand the typical approach involves providing…

C++
C++
A high-level, general-purpose programming language, created as an extension of the C programming language, that has object-oriented, generic, and functional features in addition to facilities for low-level memory manipulation.
3,596 questions
asked 2024-06-13T09:43:29.3+00:00
Michael Brunner 20 Reputation points
edited a comment 2024-06-18T01:39:16.0333333+00:00
Minxin Yu 10,461 Reputation points Microsoft Vendor
2 answers

Get deleted item from recyclebin

Task: I need to get deleted item having SHITEMID data. SHITEMID is defined as: typedef struct _ITEMIDLIST { SHITEMID mkid; }ITEMIDLIST; defined in C:\Program Files (x86)\Windows Kits\10\Include\10.0.19041.0\um\shtypes.h I have the following code to get…

C++
C++
A high-level, general-purpose programming language, created as an extension of the C programming language, that has object-oriented, generic, and functional features in addition to facilities for low-level memory manipulation.
3,596 questions
asked 2024-06-11T13:21:13.9233333+00:00
Flaviu_ 931 Reputation points
commented 2024-06-17T16:03:41.83+00:00
RLWA32 41,996 Reputation points
1 answer

Direct2D drawing quality is inconsistent

This is the result drawn in the window(HwndRenderTarget) This is the result of drawing in WicBitmapRenderTarget

Windows API - Win32
Windows API - Win32
A core set of Windows application programming interfaces (APIs) for desktop and server applications. Previously known as Win32 API.
2,476 questions
C++
C++
A high-level, general-purpose programming language, created as an extension of the C programming language, that has object-oriented, generic, and functional features in addition to facilities for low-level memory manipulation.
3,596 questions
asked 2024-06-17T03:24:16.3466667+00:00
HoWe Yu 21 Reputation points
commented 2024-06-17T13:19:06.5+00:00
HoWe Yu 21 Reputation points
0 answers

How to Utilize SetColor(Windows::UI::Colors::Red) from a Non-UWP and Non-C++/WinRT DLL File

Hi, I have developed a C++ DLL without utilizing UWP or C++/WinRT. Within this DLL, I am employing Windows::Devices::Lights::LampArray^ lamp to retrieve information about the lamp, such as lamp->IsConnected, lamp->LampCount, and…

Universal Windows Platform (UWP)
Windows API - Win32
Windows API - Win32
A core set of Windows application programming interfaces (APIs) for desktop and server applications. Previously known as Win32 API.
2,476 questions
C++
C++
A high-level, general-purpose programming language, created as an extension of the C programming language, that has object-oriented, generic, and functional features in addition to facilities for low-level memory manipulation.
3,596 questions
asked 2024-06-16T19:14:55.05+00:00
sunil maurya 21 Reputation points
edited a comment 2024-06-17T09:52:58.8666667+00:00
Junjie Zhu - MSFT 16,146 Reputation points Microsoft Vendor
0 answers

How to fix "module was not instrumented." Reason:"path_is_excluded" error in Microsoft.CodeCoverage.Console tool?

I'm receiving the following problem while trying to instrument my dll with Microsoft.CodeCoverage.Console tool. module was not instrumented. Reason: path_is_excluded." I'm using Microsoft.CodeCoverage.A console tool for calculating code coverage.…

.NET
.NET
Microsoft Technologies based on the .NET software framework.
3,527 questions
Visual Studio
Visual Studio
A family of Microsoft suites of integrated development tools for building applications for Windows, the web and mobile devices.
4,765 questions
C++
C++
A high-level, general-purpose programming language, created as an extension of the C programming language, that has object-oriented, generic, and functional features in addition to facilities for low-level memory manipulation.
3,596 questions
Visual Studio Testing
Visual Studio Testing
Visual Studio: A family of Microsoft suites of integrated development tools for building applications for Windows, the web and mobile devices.Testing: The act or process of applying tests as a means of analysis or diagnosis.
334 questions
asked 2024-06-13T06:50:10.2966667+00:00
R M 0 Reputation points
edited a comment 2024-06-17T09:37:25.4333333+00:00
Anna Xiu-MSFT 27,256 Reputation points Microsoft Vendor
0 answers

Finding window element using MSAA

I'm trying to detect the "Previous" and "Next" buttons of the Spofity MiniPlayer window using MSAA, however, sometimes these buttons don't get detected, I don't understand why, it's like luck, I need to reopen the window uncountable…

Windows API - Win32
Windows API - Win32
A core set of Windows application programming interfaces (APIs) for desktop and server applications. Previously known as Win32 API.
2,476 questions
C++
C++
A high-level, general-purpose programming language, created as an extension of the C programming language, that has object-oriented, generic, and functional features in addition to facilities for low-level memory manipulation.
3,596 questions
asked 2024-06-14T20:07:42.4333333+00:00
Laila 0 Reputation points
edited the question 2024-06-17T06:15:51.3766667+00:00
Roy Li - MSFT 32,721 Reputation points Microsoft Vendor
2 answers

How to modify the value of a preprocessor based on the value returned by a command or script?

On visual Studio 2022 how to have a preprocessor value defined based on the result returned by a script? What i tried: Solution Explorer > Properties > Build Events > Pre-Build Event > Command Line > "python script.py >…

Visual Studio
Visual Studio
A family of Microsoft suites of integrated development tools for building applications for Windows, the web and mobile devices.
4,765 questions
C++
C++
A high-level, general-purpose programming language, created as an extension of the C programming language, that has object-oriented, generic, and functional features in addition to facilities for low-level memory manipulation.
3,596 questions
asked 2024-06-14T00:07:35.4566667+00:00
Leo Purktz 0 Reputation points
answered 2024-06-17T02:20:33.32+00:00
Minxin Yu 10,461 Reputation points Microsoft Vendor
2 answers One of the answers was accepted by the question author.

Why isn't my c++ dll properly loading into my c# exe?

I'm continually getting this error message but I can't find the source. Here's a link to the .dll class I want to utilize: link And here's the c# class I'm calling it from: link

C#
C#
An object-oriented and type-safe programming language that has its roots in the C family of languages and includes support for component-oriented programming.
10,489 questions
C++
C++
A high-level, general-purpose programming language, created as an extension of the C programming language, that has object-oriented, generic, and functional features in addition to facilities for low-level memory manipulation.
3,596 questions
asked 2024-06-13T13:31:40.4133333+00:00
Forrest Crawford 40 Reputation points
accepted 2024-06-14T22:23:38.3766667+00:00
Forrest Crawford 40 Reputation points
0 answers

Sending PCIe Message TLP (Vendor Defined Message) from windows Kernel mode driver

Hi, I'm trying to write a custom driver on windows 10 (with KMDF) to frame & send PCIe TLP packets to PCIe EndPoint with user-defined payload. I'm able to do PCIe CfgRead, CfgWrite operations with READ_REGISTER_ULONG and WRITE_REGISTER_ULONG APIs.…

Visual Studio
Visual Studio
A family of Microsoft suites of integrated development tools for building applications for Windows, the web and mobile devices.
4,765 questions
C++
C++
A high-level, general-purpose programming language, created as an extension of the C programming language, that has object-oriented, generic, and functional features in addition to facilities for low-level memory manipulation.
3,596 questions
Windows Driver Kit (WDK)
Windows Driver Kit (WDK)
A set of Microsoft tools that are used to develop, test, and deploy Windows drivers.
31 questions
asked 2024-06-11T17:01:52.9166667+00:00
Srinath Prakash 0 Reputation points
edited the question 2024-06-14T09:19:58.2066667+00:00
Srinath Prakash 0 Reputation points
1 answer

Control Flow guard

Hello Team, Control flow guard is only for visual c++ based application or for all c++ compilers or it will works for all like c#, .net based application.

.NET
.NET
Microsoft Technologies based on the .NET software framework.
3,527 questions
C#
C#
An object-oriented and type-safe programming language that has its roots in the C family of languages and includes support for component-oriented programming.
10,489 questions
C++
C++
A high-level, general-purpose programming language, created as an extension of the C programming language, that has object-oriented, generic, and functional features in addition to facilities for low-level memory manipulation.
3,596 questions
asked 2024-06-07T11:13:32.64+00:00
Mashuk Raza 20 Reputation points
commented 2024-06-14T01:55:26.78+00:00
Minxin Yu 10,461 Reputation points Microsoft Vendor
0 answers

Problem signing a hash using the Wincrypt lib

Hello devs. I need to read the user certificates installed in Windows and use them to make a signature in a hash of a file previously calculated in sha256 with the private key of the chosen certificate. To do this, I developed the following code inspired…

C++
C++
A high-level, general-purpose programming language, created as an extension of the C programming language, that has object-oriented, generic, and functional features in addition to facilities for low-level memory manipulation.
3,596 questions
asked 2024-06-13T18:30:13.1666667+00:00
William Coelho 0 Reputation points
commented 2024-06-14T01:52:27.8266667+00:00
Minxin Yu 10,461 Reputation points Microsoft Vendor
0 answers

Not able to send email from Outlook 365 (both old and new outlook) using Full MAPI in C++

We have an application which has option to send emails through Outlook with the option of using either Limited MAPI or Full MAPI. Till now it worked smoothly for all the cases. But we started facing problem after introduction of Outlook 365. Sending…

Outlook
Outlook
A family of Microsoft email and calendar products.
3,226 questions
C++
C++
A high-level, general-purpose programming language, created as an extension of the C programming language, that has object-oriented, generic, and functional features in addition to facilities for low-level memory manipulation.
3,596 questions
Office Development
Office Development
Office: A suite of Microsoft productivity software that supports common business tasks, including word processing, email, presentations, and data management and analysis.Development: The process of researching, productizing, and refining new or existing technologies.
3,648 questions
asked 2024-06-13T13:50:44.2566667+00:00
Subhasis Ghosh 0 Reputation points
commented 2024-06-13T15:12:27.5333333+00:00
RLWA32 41,996 Reputation points
1 answer

MAPIInitialize() fails with MS outlook 365

Hi I have an VC++ application which reads the emails from the MS outlook. Till now it was working fine till I was using MS outlook 2019/2016. But as soon as I upgraded my outlook to office 365 app, my application fails with outlook. below is the code…

Outlook
Outlook
A family of Microsoft email and calendar products.
3,226 questions
C++
C++
A high-level, general-purpose programming language, created as an extension of the C programming language, that has object-oriented, generic, and functional features in addition to facilities for low-level memory manipulation.
3,596 questions
asked 2023-01-13T10:20:04.8566667+00:00
Mayank Agarwal 21 Reputation points
commented 2024-06-13T14:16:43.2066667+00:00
Subhasis Ghosh 0 Reputation points
2 answers One of the answers was accepted by the question author.

How to use c++ 20 modules in shared libraries ?

Hello everyone, I am currently working on a test-project where I want to use shared libraries and I would like to leverage the new C++20 modules feature. However, I am having some difficulty understanding how to properly set up my code to use C++20…

C++
C++
A high-level, general-purpose programming language, created as an extension of the C programming language, that has object-oriented, generic, and functional features in addition to facilities for low-level memory manipulation.
3,596 questions
asked 2024-05-10T19:22:17.17+00:00
Michael Brunner 20 Reputation points
commented 2024-06-13T09:44:16.2733333+00:00
Michael Brunner 20 Reputation points
1 answer

NotifyIpInterfaceChange function (netioapi.h) does not notify on manual DNS changes

I work on the c-ares open source asynchronous DNS library (https://c-ares.org) and we have recently added automatic configuration reloading when we detect a network configuration change has occurred. We get notifications properly when network…

Windows
Windows
A family of Microsoft operating systems that run across personal computers, tablets, laptops, phones, internet of things devices, self-contained mixed reality headsets, large collaboration screens, and other devices.
4,940 questions
Windows API - Win32
Windows API - Win32
A core set of Windows application programming interfaces (APIs) for desktop and server applications. Previously known as Win32 API.
2,476 questions
C++
C++
A high-level, general-purpose programming language, created as an extension of the C programming language, that has object-oriented, generic, and functional features in addition to facilities for low-level memory manipulation.
3,596 questions
asked 2024-06-05T16:21:55.43+00:00
Brad House 0 Reputation points
commented 2024-06-12T08:40:04.97+00:00
Gary Nebbett 5,756 Reputation points
1 answer

How to diable keyboard

I want to disable keyboard using toggle switch and these are my code I don't know what the command is to disable keyboard using toggle Switch. please help me I am beginner in Win UI (C++/CX & C++/WinRT). <! --xaml --> <ToggleSwitch…

C++
C++
A high-level, general-purpose programming language, created as an extension of the C programming language, that has object-oriented, generic, and functional features in addition to facilities for low-level memory manipulation.
3,596 questions
XAML
XAML
A language based on Extensible Markup Language (XML) that enables developers to specify a hierarchy of objects with a set of properties and logic.
778 questions
Windows 11
Windows 11
A Microsoft operating system designed for productivity, creativity, and ease of use.
8,630 questions
asked 2024-06-08T14:59:37.5266667+00:00
Raman Singh 0 Reputation points
commented 2024-06-12T01:49:59.4466667+00:00
Minxin Yu 10,461 Reputation points Microsoft Vendor