通过DirectOS xtra插件便可得到DirectX version
on GetDirectXVersion
vDirectX = dosReadReg ("HKEY_LOCAL_MACHINE", "Software\Microsoft\DirectX", "Version")
if (vDirectX = "") then
if (dosGetLastError()) then
put "Can't obtain the DirectX version. DirectX may not be installed, error # "&dosGetLastError()
else
put "DirectX version information is not stored as expected."
end if
exit
end if
set the itemDelimiter to "."
put "DirectX version is " & item 2 of vDirectX & "." & item 3 of vDirectX
end

windows操作系统。