I have written an audio media player using phonon. I have compiled it for both Windows (mingw) and Linux. It works great. The Linux version has been installed on several machines and works flawlessly. The Windows version works perfectly on my development machine, but I am having problems installing it on other Windows computers. I am installing the following files:
application executable, necessary PNG files, help file, etc.
(all of these might not be required, but I will have other Qt applications as well)
The application launches fine, and I can add files to the playlist. But when I try to play a file, it will not play. I believe it never enters the playing state in phonon. This problem happens on other machines where I have tried to install my application. I can install it on my development machine and it works perfectly.
I have tried copying QtOpenGL4.dll into System32, as well as copying phonon_ds94.dll into System32, or into a folder phonon_backend in the application folder. This did not help.
I'm sure I must be missing some DLL(s), but I can't figure out which one(s). I've also tried the sample Phonon Music Player that comes with QtCreator. Same results, it plays fine on my development machine, but not on another Windows machine.
Help! What file(s) am I missing, or how can I find out?