Hi all,
I was testing SFML2 under Linux (Ubuntu 12.04.1 64-bit) in VirtualBox, and I noticed something strange.
The test app was nothing specific, it was the code from
the documentation. But when I moved the window, I noticed that the content of the window remains at the place where the window originally was (and kept on updating), while the window itself displayed a part of the desktop background. When I released the mouse button and dropped the window, everything was fine again.
Another thing I noticed is that while the app was running, and I opened an other window (or restored a minimized one), the content of the SFML window (just the content, not the window frame/titlebar) was always on top, blocking the view of the other, supposedly overlapping window(s).
Is this happened because of the virtual machine? The few other OpenGL apps I've tested ran fine, both in fullscreen and windowed mode.
EDIT: According to a few posts on the VirtualBox forum, similar behaviour has been observed under older versions of VirtualBox, but it has been supposedly fixed about a year ago. But since the problem they've described is extremely similiar to this one (although they didn't mention the window drag glitch), it would be the best if someone could test this on a real system. Or, if nobody does, I'm planning to replace win7 with Ubuntu 12.04 next week, so I'll check it out.
