d8cd02b480
Previously, the first monitor was created instead and while it was often also the primary one, this wasn't always the case. In particular, this makes wxGetDisplayPPI() always return something reasonable instead of returning (0, 0) when the first monitor is not the primary one, as expected by plenty of code, including our own printing sample, which divides by the values returned from wxGetDisplayPPI() without checking if they're zero.