Cannot run executable

[bam500]

Hi,

I am trying to run my application but I get this error :

This application failed to start because it could not find or load the Qt platform plugin "windows" in "". Reinstalling the application may fix this problem.

I have in my app folder the following structure :

• app.exe
• plugins
  • platforms
    • qminimald.dll
    • qoffscreend.dll
    • qwindowsd.dll
  • styles
    • qwindowsvistastyled.dll

I then run Dependency Walker and get this :

It looks like my application cannot find all the windows DLLs. But I don't know how to fix it. Any idea ?

EDIT : I am running it on Windows 10 with Qt 5.10.1

Thanks & Regards

[Christian Ehrlicher]

The plugins directory is wrong - see https://doc.qt.io/qt-5/windows-deployment.html#qt-plugins :

All Qt GUI applications require a plugin that implements the Qt Platform Abstraction (QPA) layer in Qt 5. For Windows, the name of the platform plugin is qwindows.dll. This file must be located within a specific subdirectory (by default, platforms) under your distribution directory. Alternatively, it is possible to adjust the search path Qt uses to find its plugins, as described below.

And I would suggest you using windeployqt instead trying to copy all needed Qt dlls by yourself (which, obviously doesn't work very well).