已不再支援此瀏覽器。
請升級至 Microsoft Edge，以利用最新功能、安全性更新和技術支援。
Important
Some information relates to prerelease product that may be substantially modified before it’s released. Microsoft makes no warranties, express or implied, with respect to the information provided here.
Unused. Return E_NOTIMPL.
public: int Unused3();
int Unused3();
public int Unused3 ();
abstract member Unused3 : unit -> int
Public Function Unused3 () As Integer