Qt6 Widgets Application not working, exit code -1073741511

[hskoglund]

Hi, another option to show what DLLs an .exe has loaded is to run ListDLLs start a CMD and type listdlls CPS

P.S. Sometimes a 3rd party antivirus can cause that error 0xC0000139, so if you have one running, try disabling it.

[JonB]

@HQ2000 said in Qt6 Widgets Application not working, exit code -1073741511:

C:\Users[MyUsrName]\CLionProjects\CPS\cmake-build-debug\Qt6Core.dll
C:\Users[MyUsrName]\CLionProjects\CPS\cmake-build-debug\Qt6Widgets.dll

Your CMakeLists.txt lists:

find_package(Qt6 COMPONENTS
        Core
        Gui
        Widgets
        REQUIRED)

So is there not at least a Qt6Gui.dll also required?

I don't know any more than: somewhere you are messed up in what you have built, where you have placed it and what is required. And I do not use Windows or MinGW.

[Christian Ehrlicher]

@JonB said in Qt6 Widgets Application not working, exit code -1073741511:

C:\Users[MyUsrName]\CLionProjects\CPS\cmake-build-debug\Qt6Core.dll
C:\Users[MyUsrName]\CLionProjects\CPS\cmake-build-debug\Qt6Widgets.dll

Why are the dlls there? Where do they come from? Normally they are used from the PATH env var.

[JonB]

@Christian-Ehrlicher I agree. I was just quoting from the OP's post. We know the OP really needs to sort out what they have where.

[HQ2000]

@JonB
@Christian-Ehrlicher
Since you both haven't worked with CLion and Qt so far (I guess), let me clarify some things:

1. Qt6Gui is required as a standard (you can change that of course) if you use CLion with Qt, so it is available for but not required by the sample program since none of its functionality is used.
2. The DLLs are there because because of the "find_package" command in the CMakeLists.txt file.

I tried to run it with gdb as @Christian-Ehrlicher told me and I was able to run it with any problems...

@hskoglund
I tried it...same error

[Christian Ehrlicher]

@HQ2000 said in Qt6 Widgets Application not working, exit code -1073741511:

The DLLs are there because because of the "find_package" command in the CMakeLists.txt file.

No, find_package() does not copy anything.

[HQ2000]

@Christian-Ehrlicher you're right, it's done here
@HQ2000 said in Qt6 Widgets Application not working, exit code -1073741511:

 foreach (QT_LIB Core Gui Widgets)
         add_custom_command(TARGET ${PROJECT_NAME} POST_BUILD
                 COMMAND ${CMAKE_COMMAND} -E copy
                 "${QT_INSTALL_PATH}/bin/Qt6${QT_LIB}${DEBUG_SUFFIX}.dll"
                 "$<TARGET_FILE_DIR:${PROJECT_NAME}>")
  endforeach (QT_LIB)

[JonB]

@HQ2000
So purely OOI could you comment on why that foreach has not copied Qt6Gui.dll as I asked earlier? However you say you know it works without that, somehow.

Confirm you are not building your project for debug?

Remove everything on your PATH environment variable so we know it is not picking something up somewhere?

[Christian Ehrlicher]

Don't do this. Adjust your PATH env var accordingly and use windeployqt when you want to deploy your app. Your are missing dll and plugins

[Christian Ehrlicher]

@JonB copying dlls around manually is wrong. The PATH env var has to be adjusted.

[JonB]

@Christian-Ehrlicher
? Of course, I know! I was just trying to diagnose where the OP's problem might lie, given what is in the makefile. I posted before your post.

[Christian Ehrlicher]

@JonB said in Qt6 Widgets Application not working, exit code -1073741511:

where the OP's problem might lie,

The problem is, that he is copying only half of the required stuff because he is doing some strang stuff manually for no reason.

[HQ2000]

@Christian-Ehrlicher so, what else should I get you? Also, the whole CMakeLists.txt file is standard in CLion. I did not write this.
Yes, I did some things manually on purpose. Private data..

[Christian Ehrlicher]

As I already wrote - don't copy stuff around as it's wrong as it's missing things. Adjust your PATH var accordingly so that the Qt libs are properly found.

[HQ2000]

@Christian-Ehrlicher
You mean I should just add their absolute paths to the PATH var?

[Christian Ehrlicher]

@HQ2000 said in Qt6 Widgets Application not working, exit code -1073741511:

You mean I should just add their absolute paths to the PATH var?

Again: add the path to the Qt dlls to the PATH env var.

[HQ2000]

@Christian-Ehrlicher
Did it, nothing changed. (I restarted the project, of course)
Same with deleting the associated environment vars

@JonB
It did. But it is not needed, I viewed it in the Dependency Walker

[Christian Ehrlicher]

@HQ2000 said in Qt6 Widgets Application not working, exit code -1073741511:

Same with deleting the associated environment vars

Then you would get an error about missing dlls. You have some wrong dlls around somewhere.
Delete all dlls you copied around, don't copy dlls around in your CMakeLists.txt or anywhere else during your build, use a clean build dir, set the env var accordingly and start it from the command line where you also started the dependency tools from...

[HQ2000]

@Christian-Ehrlicher
I did not copy around any DLLs, this is a clean build dir (CLion pre-config)
I will try it.

Added the env vars:

Still get the Error messages that exactly these ones are missing...

[JonB]

@HQ2000 said in Qt6 Widgets Application not working, exit code -1073741511:

Added the env vars:

You write that followed by a list of DLLs. What do you mean you did to what environment variable? Also you no longer list the Qt DLLs?

Still get the Error messages that exactly these ones are missing...

If you mean the 4 in that list are reported missing then you have not set your PATH correctly.

I am lost.