编译出错：Need imported data reference ($G) to access 'MEDIATYPE_Audio' from unit 'US

编译出错：Need imported data reference ($G) to access 'MEDIATYPE_Audio' from unit 'USAudioTypes'，如何解决？ ( 积分: 100 )<br />编译出错：Need imported data reference ($G) to access 'MEDIATYPE_Audio' from unit 'USAudioTypes'，如何解决？

编译出错：Need imported data reference ($G) to access 'MEDIATYPE_Audio' from unit 'USAudioTypes'，如何解决？

从字面看是需要$G来访问MEDIATYPE_Audio,
加上{$G}试试。

加了也一样的提示。

Type Switch
Syntax {$G+} or {$G-}
{$IMPORTEDDATA ON} or {$IMPORTEDDATA OFF}
Default {$G+}
{$IMPORTEDDATA ON}
Scope Local
Remarks

The {$G-} directive disables creation of imported data references. Using {$G-} increases memory-access efficiency, but prevents a packaged unit where it occurs from referencing variables in other packages.