Add support for a new event sent by wxColourDialog, currently only under MSW, when the colour currently selected in it changes. Based on work by Trylz, see https://github.com/wxWidgets/wxWidgets/pull/1219
Add support for a new event sent by wxColourDialog, currently only under MSW, when the colour currently selected in it changes. Based on work by Trylz, see https://github.com/wxWidgets/wxWidgets/pull/1219