SetIncrement() was already available in wxSpinCtrlDouble and GTK version
of wxSpinCtrl, now implement support for it in wxMSW and wxOSX as well.
In fact, in wxMSW, implement it at wxSpinButton level, so that both this
class and wxSpinCtrl inheriting from it (in wxMSW only) support setting
custom increment now.
Also add support for it to XRC, show it in the sample and add a unit
test verifying that it works.
Closes#2597.
This directory contains tests for the library and is mostly useful for the
library developers. See the samples subdirectory for the examples that are
more useful to the application developers using the library.
If you do work on the library itself and would like to modify an existing or
add a new test, please see docs/contributing/how-to-write-unit-tests.md for
more information.
This file also contains the instructions for running the tests if you'd just
like to do it to confirm that the library works correctly.
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