3,537 questions with C++-related tags

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Windows API's CreateFile with CFile gives invalid path error if used drives created with SUBST

A drive is created for a folder using SUBST command. We have a Windows application which reads contents of the and performs some operations. Application does not give any error when read the file path is from actual drive. But when try to read from drive…

Windows App SDK
Windows App SDK
A set of Microsoft open-source libraries, frameworks, components, and tools to be used in apps to access Windows platform functionality on many versions of Windows. Previously known as Project Reunion.
727 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.
2,426 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.
3,537 questions
asked 2024-05-03T12:58:05.9266667+00:00
Dada Khalandhar Gooty 0 Reputation points
commented 2024-05-03T15:48:23.71+00:00
David Lowndes 2,350 Reputation points MVP
2 answers One of the answers was accepted by the question author.

Can COM use Excel as an in-process DLL?

Hello, I would to ask about Excel COM operation.  To connect to Excel from another C++ process is well established: #import "C:\\Program Files (x86)\\Common Files\\microsoft shared\\OFFICE11\\MSO.DLL"      #import "C:\\Program Files…

Office
Office
A suite of Microsoft productivity software that supports common business tasks, including word processing, email, presentations, and data management and analysis.
1,317 questions
Excel
Excel
A family of Microsoft spreadsheet software with tools for analyzing, charting, and communicating data.
1,476 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.
3,537 questions
asked 2024-05-03T10:05:47.41+00:00
masterjodi 20 Reputation points
commented 2024-05-03T11:45:41.7533333+00:00
masterjodi 20 Reputation points
1 answer

Microsoft Visual Studio：the file cannot be found when running the program

After the compilation is successful, the file cannot be found when running the program. 在编译成功后，运行时找不到文件。 Display:（Chinese） Microsoft Visual Studio 无法启动程序“C:\Users\1vr_s\Desktop\passward\Project1\x64\Debug\Project1.exe”。 系统找不到指定的文件。 …

Visual Studio
Visual Studio
A family of Microsoft suites of integrated development tools for building applications for Windows, the web and mobile devices.
4,621 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.
3,537 questions
asked 2022-04-10T07:21:22.217+00:00
LtpLGM 1 Reputation point
commented 2024-05-03T10:14:16.0466667+00:00
zai liang 0 Reputation points
0 answers

How to use C++/WinRt API like as part of DLL without user interface(UI)

Hi, I am attempting to utilize the C++/WinRT code provided in the sample of LampArray, cppwinrt to create a DLL. However due to the tight coupling of this sample with the UI, I am not able to use below API independently within my DLL code, without…

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.
2,426 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.
3,537 questions
asked 2024-04-23T06:41:57.05+00:00
sunil maurya 21 Reputation points
edited the question 2024-05-03T07:27:35.8966667+00:00
Roy Li - MSFT 32,051 Reputation points Microsoft Vendor
0 answers

DCOM Interface Call fails with Kerberos

We try to move one of our current DCOM Applications that Impersonates a Client from NTLM over to Kerberos. So I tryed to get a minimal Example running. I Init the Server and Client as follows: CoInitializeSecurity(NULL, -1, NULL, NULL,…

Windows 10
Windows 10
A Microsoft operating system that runs on personal computers and tablets.
10,657 questions
Windows Server
Windows Server
A family of Microsoft server operating systems that support enterprise-level management, data storage, applications, and communications.
12,171 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.
3,537 questions
asked 2024-05-02T16:34:09.79+00:00
TRoll 0 Reputation points
edited a comment 2024-05-03T01:40:24.2133333+00:00
Minxin Yu 10,031 Reputation points Microsoft Vendor
0 answers

Application built on Windows 11 does not start

When I built my Qt (6.8) application using MinGW 11.2 compiler toolchain, I get a pop up error message: The application was unable to start correctly (0xc00000ba). Click OK to close the application. Same issue occurs when built for Qt 6.7 and same…

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.
3,537 questions
asked 2024-05-02T18:41:08.63+00:00
Kat Nellayappan 0 Reputation points
commented 2024-05-03T01:37:09.13+00:00
Minxin Yu 10,031 Reputation points Microsoft Vendor
0 answers

Unkillable app in NtGdi DestroyAllocation2 after d3d11.dll Flush() when running for multiple days

Hello, we have an issue with a d3d11 software we develop in C++ for years. After running for multiple days, usually over 40 hours, we get a hang in win32u.dll!NtGdiDdDDIDestroyAllocation2() after we try to close the application. The process becomes stuck…

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.
3,537 questions
Windows Hardware Performance
Windows Hardware Performance
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.Hardware Performance: Delivering / providing hardware or hardware systems or adjusting / adapting hardware or hardware systems.
1,546 questions
Windows 11
Windows 11
A Microsoft operating system designed for productivity, creativity, and ease of use.
8,216 questions
asked 2024-05-02T13:35:00.2133333+00:00
Richard Hachem 0 Reputation points
edited the question 2024-05-03T01:24:58.92+00:00
Minxin Yu 10,031 Reputation points Microsoft Vendor
4 answers One of the answers was accepted by the question author.

After update to VS 2022 17.8.5, from 17.0.6, I get Exception thrown at ntdll.dll immediately on debug

My project builds with normal warnings. I turned on Code Analysis on Build, but nothing improved the situation. After update to VS 2022 17.8.5, from 17.0.6, I get these errors when debugging or starting my project: Exception thrown at 0x00007FFE55B0E1E0…

Visual Studio
Visual Studio
A family of Microsoft suites of integrated development tools for building applications for Windows, the web and mobile devices.
4,621 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.
3,537 questions
asked 2024-01-18T16:47:28.0466667+00:00
Dahl, Oskar 20 Reputation points
commented 2024-05-02T18:25:37.27+00:00
Johan Dahlin 1 Reputation point
2 answers One of the answers was accepted by the question author.

Any sample code in C/C++ to Publish and Subscribe to Azure Web PubSub?

I am looking for sample C/C++ code to Publish and Subscribe to Azure Web PubSub. Specifically, I want to send data from a microcontroller programmed in C/C++ to a server with Azure Web PubSub. Are there any resources available that could help me achieve…

Azure Web PubSub
Azure Web PubSub
An Azure service that provides real-time messaging for web applications using WebSockets and the publish-subscribe pattern.
62 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.
3,537 questions
asked 2024-05-01T10:49:20.29+00:00
Williams Celis 30 Reputation points
accepted 2024-05-02T07:56:22.77+00:00
Williams Celis 30 Reputation points
4 answers

How do I stop Microsoft Defender Smartscreen blocking my app?

I am a software developer. I write and sell a (Visual C++) software product. I have just released a new version of my software. First in years. Customers buy a licence and download the software from the Internet. I've had my share of false positives…

Small BASIC
Small BASIC
A programming language created by Microsoft that serves a stepping stone for beginners from block-based coding languages to more complex text-based languages.
277 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.
3,537 questions
asked 2020-12-09T21:08:46.527+00:00
simonx 126 Reputation points
edited a comment 2024-05-01T22:51:40.41+00:00
Louis Kessler 16 Reputation points
0 answers

How to Covert .stl file to .jpg file.

I want to convert a .stl file to a .jpg file, and the .stl file has a face with numbers and letters. I want to find the face through code and convert it to an image. It would be best to use C++ or C#.

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.
10,277 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.
3,537 questions
asked 2024-05-01T05:03:56.9233333+00:00
Pearl Ding 80 Reputation points
commented 2024-05-01T09:27:04.3466667+00:00
Hui Liu-MSFT 40,266 Reputation points Microsoft Vendor
3 answers One of the answers was accepted by the question author.

How to change lockscreen wallpaper by using Windows SDK (C++) or modifying registry?

Hi all. My Windows version is Windows 10 22H2 19045.2846, and I'd like to change my lockscreen wallpaper by using Windows SDK (or dll function), but I can't find any function for it. I want to get a function, which is equal to…

Windows 10
Windows 10
A Microsoft operating system that runs on personal computers and tablets.
10,657 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.
2,426 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.
3,537 questions
asked 2023-05-09T04:03:47.9333333+00:00
Jiakang Li 20 Reputation points
edited an answer 2024-04-30T08:05:16.2366667+00:00
Topaz George 0 Reputation points
0 answers

Error C3640 in VS22 DLL project

No matter what I try I keep getting a C3640 Error: Error C3640 'DllMain::IslandPortal31::~IslandPortal31': a referenced or virtual member function of a local class must be defined Hopeing someone can help Header File #ifndef __ISLANDPORTAL31_H #define…

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.
3,537 questions
Visual Studio Debugging
Visual Studio Debugging
Visual Studio: A family of Microsoft suites of integrated development tools for building applications for Windows, the web and mobile devices.Debugging: The act or process of detecting, locating, and correcting logical or syntactical errors in a program or malfunctions in hardware. In hardware contexts, the term troubleshoot is the term more frequently used, especially if the problem is major.
945 questions
asked 2024-04-28T07:39:03.8933333+00:00
Copycat 0 Reputation points
edited a comment 2024-04-30T02:22:12.95+00:00
Minxin Yu 10,031 Reputation points Microsoft Vendor
2 answers One of the answers was accepted by the question author.

COM aggregation, "stabilization" AddRef/Release pair, necessary? (Don Box book)

To the excellent members of the COM team:   I have one question with the “stabilization” technique introduced in Don Box’s book.   In functions like FinalConstruct(), the outer object might create inner aggregation objects. These inner objects in turn…

.NET
.NET
Microsoft Technologies based on the .NET software framework.
3,395 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.
3,537 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.
3,508 questions
asked 2024-04-29T07:02:22.5866667+00:00
masterjodi 20 Reputation points
accepted 2024-04-29T15:31:57.8+00:00
masterjodi 20 Reputation points
1 answer

How to fix app crash under Win11 in coremassaging.dll

Hello, I have created an application that displays 3D objects (step, iv, wrl, …). However the program crashes reproducibly, and the cause cannot be identified. Now it is unfortunately so that when debugging (Visual Studio debugger, Remote debugging,…

Visual Studio
Visual Studio
A family of Microsoft suites of integrated development tools for building applications for Windows, the web and mobile devices.
4,621 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.
3,537 questions
asked 2023-08-24T10:57:26.8766667+00:00
Torsten Oestreich 0 Reputation points
answered 2024-04-29T13:24:39.8366667+00:00
SPIEGEL Hermann 0 Reputation points
4 answers

Visual Studio 2015 & 2017 doesn't recognize std

Hello, I've written simple piece of code which compiles and works perfectly on any other program which can compile and run C++, but when I try to run it from VS 2015 on my laptop or on VS 2017 from my other laptop, it won't build it - I get an error…

Visual Studio
Visual Studio
A family of Microsoft suites of integrated development tools for building applications for Windows, the web and mobile devices.
4,621 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.
3,537 questions
Not Monitored
Not Monitored
Tag not monitored by Microsoft.
36,150 questions
asked 2020-08-25T04:58:53.277+00:00
Elinor Ginzburg 106 Reputation points
answered 2024-04-29T08:35:34.7833333+00:00
dewasakti777 0 Reputation points
2 answers One of the answers was accepted by the question author.

How to remove the context help icon from CFindReplaceDialog?

I am using a CFindReplaceDialog in my application. But, it displays the Context Help icon in the top right. How can I stop displaying this icon?

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.
3,537 questions
asked 2024-04-28T21:48:26.19+00:00
ChuckieAJ 86 Reputation points
accepted 2024-04-29T06:56:00.4666667+00:00
ChuckieAJ 86 Reputation points
1 answer

Is the Visual C++6 free to use in enterprises ?

Hello Team, Do I understand correctly that Visual C++ 6 is free to use in enterprises? (I saw redistributable version is okay to use in enterprises. But I can't see the redistributable version of Visual C++ 6.0 in the MS website.) Thank you.

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.
3,537 questions
asked 2024-04-01T19:41:26.7766667+00:00
UnsangLee 0 Reputation points
edited a comment 2024-04-27T15:30:55.53+00:00
kwikc 131 Reputation points
1 answer One of the answers was accepted by the question author.

Alternatives for the application to make it as a packaged application?

Hi, I am currently building a WinUI3 C++ application using Windows App SDK. But currently the application is unpackaged mode. I am currently thinking to shift to packaged mode as it is recommended by the Microsoft currently I have tried the sample…

Windows App SDK
Windows App SDK
A set of Microsoft open-source libraries, frameworks, components, and tools to be used in apps to access Windows platform functionality on many versions of Windows. Previously known as Project Reunion.
727 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.
3,537 questions
asked 2024-03-13T04:17:56.3366667+00:00
Rohan Pande 290 Reputation points
commented 2024-04-26T00:06:10.75+00:00
Matthew Bonanno 1 Reputation point
1 answer

Is there any way to disable loading of satellite DLLs for MFC programs?

According to this help page, any application or DLL created with MFC will attempt to load localized resources from satellite DLLs such as exampleENU.dll or exampleLOC.dll. We have built a legacy application using MFC, but we do not use this particular…

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.
3,537 questions
asked 2024-04-25T11:02:07.57+00:00
Hermann Walth 0 Reputation points
answered 2024-04-25T14:59:15.2633333+00:00
Michael Taylor 48,576 Reputation points