Visual Studio Cannot open include file 'QtConcurrent'L No such file or directory

[ConorCodes]

Hello,

I am having an issue building a project I have taken over from another developer.

I am using Visual Studio 2019 with Qt 6.2.0 and receive the error Cannot open include file: 'QtConcurrent': No such file or directory when I try build the project. The #include <QtConcurrent> in my source file is highlighted.

So far I have added concurrent to the Qt Modules under Qt Project Settings.
Also under C/C++ -> Command line in the All Options "C:\Qt\6.2.0\msvc2019_64\include\QtConcurrent" exists.

I was wondering if anyone could help me discover what I am missing please?

Thanks,

[n-2204]

@ConorCodes May be you can try this-> Right click on project on visual studio -> click properties (on the bottom) -> go to C/C++ -> all options -> find additional include directories and there add path to your QT include folder

[KroMignon]

@ConorCodes said in Visual Studio Cannot open include file 'QtConcurrent'L No such file or directory:

I was wondering if anyone could help me discover what I am missing please?

Do you have add QtConcurrent package in your project?
For qmake project add QT += concurrent in PRO file
For cmake, add following in CMakeLists.txt:

find_package(Qt6 COMPONENTS Concurrent REQUIRED)
target_link_libraries(mytarget PRIVATE Qt6::Concurrent)

cf: https://doc.qt.io/qt-6/qtconcurrent.html

[ConorCodes]

@KroMignon said in Visual Studio Cannot open include file 'QtConcurrent'L No such file or directory:

QT += concurrent

Hello KroMignon,

Thank you for your response.

I am using qmake to build my Visual Studio project, do you know where I can find the correct .pro file?

I tried to add QT += concurrent to QtTestTool\Debug\qmake\temp qtvars.pro is this the correct location as I'm trying to run my program in debug?

Thanks

[KroMignon]

@ConorCodes said in Visual Studio Cannot open include file 'QtConcurrent'L No such file or directory:

I tried to add QT += concurrent to QtTestTool\Debug\qmake\temp qtvars.pro is this the correct location as I'm trying to run my program in debug?

The PRO file is your project file!!!!

[ConorCodes]

The solution which solved my issue was editing the VC++ Project file and ensuring that concurrent was in <QtModules> inside each <PropertyGroup>

<PropertyGroup Condition="'$(Configuration)|$(Platform)' == 'Debug|x64'" Label="QtSettings">
<QtInstall>Qt 6.2.0</QtInstall>
<QtModules>concurrent;core;gui;widgets</QtModules>
<QtBuildConfig>debug</QtBuildConfig>
</PropertyGroup>