I'm writing an editor and I have a problem which means calling native file save/open dialog from my opengl app. The editor is written with my in-game opengl gui. So i came up with idea that when user press "load" or "save", I will create a thread which will create required (non-visible) wx window and it will call wxFileDialog and after the job is done I will delete that thread. Is it possible or maybe there are better aproaches to acces file open/save dialog in cross platform way from an opengl app?
As others have already said, the simplest solution is to use wxWidgets for the main loop and wxGLCanvas for OpenGL stuff.
But if this is impossible, for some reason, you should indeed be able to use wxWidgets from another thread. Just remember that wxWidgets GUI functionality can only be used from a single thread so you need to initialize it from that thread too. And, of course, you'll need to handle thread synchronization yourself as wxWidgets won't know anything about the rest of your program.