Application does not see related .dlls

MasterBLB

Hey fellow programmers

Today I've encountered something weird:
https://imgur.com/a/aBuQVWq
This message means that MechDesigner.exe cannot find Qt5Core.dll. But how it is possible, as the file is near to the .exe??? (Ah, and I don't mess with QCoreApplication::libraryPaths) All related Qt stuff (gui, widgets) is also there, as you mates can see.
In \plugins there are \platforms\qwindows.dll , and \styles\qwindowsvistastyle.dll
I have no clue what's wrong with this installation :/ Could you help?

Btw, target OS is Windows 10, the app was built on Windows 7.

MasterBLB

Thanks for the hint, that windeployqt looks very promising.
And the issue is solved, the person I gave the application tried to run it from inside of archive <facepalm>

SGaist

Hi,

Might be a silly question but are you sure you copied the right .dlls. From the looks of it, there's a chance you are using MinGW, so are these libs from the MinGW build of Qt ?

To simplify your life, you should use windeployqt, it will gather your application dependencies and related plugins.

MasterBLB

Thanks for the hint, that windeployqt looks very promising.
And the issue is solved, the person I gave the application tried to run it from inside of archive <facepalm>