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Rafael Kitover authored
The `wxEXPAND` flag is necessary for the game area in wxWidgets 3.0 and earlier, it may be necessary in 3.1.2 as well, but it throws an xrc error, so we check for windows and at least 3.1.2 to test for the visual studio and vcpkg environment to avoid the xrc error. Signed-off-by: Rafael Kitover <rkitover@gmail.com>