The virtual host assigns the name of the mouse device to
"VirtualBox USB Tablet" in VirtualBox and we'd use that device as mouse.
If not, GtkTooltip is not enabled.
https://bugzilla.gnome.org/show_bug.cgi?id=763017
!strstr (tmp_name, "pointer") &&
!strstr (tmp_name, "qemu usb tablet") &&
!strstr (tmp_name, "spice vdagent tablet") &&
+ !strstr (tmp_name, "virtualbox usb tablet") &&
has_abs_axes (display, dev->classes, dev->num_classes))
input_source = GDK_SOURCE_TOUCHSCREEN;
else