

'宣言 Public MustInherit Class PreviewPageBase
'使用法 Dim instance As PreviewPageBase
public abstract class PreviewPageBase
System.Object
C1.Win.C1Preview.PreviewPageBase
C1.Win.C1Preview.PreviewPageDocBase
C1.Win.C1Preview.PreviewPageExternal
C1.Win.C1Preview.PreviewPageSimple