針對開啟DirectX9舊版專案問題做紀錄.
dxerr9.lib改dxerr.lib
https://social.msdn.microsoft.com/Forums/windowsdesktop/en-US/c8135636-f9fe-420d-9e88-f6b3bc22e042/error-c2062-type-float-unexpected?forum=vcgeneral
https://qiita.com/Nekonecode/items/3531f357343ad24cfd49
include連結及library連結
$(DXSDK_DIR)include;$(IncludePath)
$(DXSDK_DIR)lib\x86;$(LibraryPath)
link的lib將DxErr9.lib改為DxErr.lib
追加legacy_stdio_definitions.lib
將const float INFINITY = FLT_MAX;
改成const float INFTY = FLT_MAX;