Application crash when it run with Qt creator but works after "deploy"

SGaist

If you copy that dll in the build folder, does it still fail to start ?

helenebro

Yes, if I copy .dll next to .exe, it still not working

SGaist

Just to be sure we are on the same line:

You build your application
You copy the DLL in the build folder
You call run from Qt Creator
Crash ?

helenebro

Yes.
On the other side, if I copy .exe on folder with hidapi.dll and other dll of Qt (as I deploy). I can execute the application without crash.

SGaist

Strange… Does hidapi.dll have any dependency ?

helenebro

no, I don't think.
And when I copy .dll on "deploy folder" I don't added anything except hidapi.dll and Qt dll

helenebro

I found the problem. The difference between "deploy" folder and project folder is : msvcr120d.dll. If I add this dll on project folder, it works.
Thank you for your help

raven-worx

@helenebro
actually the msvc runtime binaries should also be available system wide (e.g. contained in the PATH), so something went wrong during installation. Or do you have altered the environment variables in the QtCreator project settings?

helenebro

I don't know if it's a installation problem but I don't found msvrc120d.dll on C:/Windows/System32 or on C:/Windows/SysWOW64.

hskoglund

Hi, msvcr120dl.dll usually you will only obtain by installing Microsoft Visual Studio 2013. Because it's the debug flavor of the normal msvcr120.dll, and that dll is much more easy to find.
Try building your app in Release mode, then you might get rid of your dependency on msvcr120d.dll.

helenebro

If I build my app in Release mode I have the problem if msvcr120d.dll on my folder. I think it's because library hidapi is build with visual studio.