Hello,

I'm developing an application for Windows that uses Qt 5.10 and is compiled with Visual Studio 2015, and I'm using NSIS to pack and build the installer.

When I run the application that I have installed to the "c:\Program Files" directory it looks different than the application that I run from the build directory.

This is how it looks when I run it from the build directory:

p5Uqqdq.png

And this is how it looks when I run it from the "c:\Program Files" directory after it has been installed:

tBHaeyN.png

As you can see, the installed instance has something like a Windows XP look, with 3D buttons and frames.

Does anybody know what could be happening? Or has a hint of what to look for?

Thank you in advance for your help!