ac1fa83c20
Under MSW creating a wxSpinCtrl with a range of, say, 1..10 and the default initial value of 0 sets its initial value to 1 (i.e. the closest valid value) as expected, but the generic version still set it to the invalid value of 0, which was unexpected, inconsistent and not useful. Fix the generic version to follow MSW behaviour now and add a test checking for this.