When using wxBitmap ctor taking wxDC, the bitmap should inherit the scale factor of the DC, both because it's already the case in the other ports and because it makes sense to do it. Add a unit test checking that this is the case in all ports now.
When using wxBitmap ctor taking wxDC, the bitmap should inherit the scale factor of the DC, both because it's already the case in the other ports and because it makes sense to do it. Add a unit test checking that this is the case in all ports now.