'宣言 Protected Overridable Sub OnActivePaneChanged( _ ByVal e As SpreadsheetActivePaneChangedEventArgs _ )
protected virtual void OnActivePaneChanged( SpreadsheetActivePaneChangedEventArgs e )
UltraSpreadsheet クラス UltraSpreadsheet メンバ SpreadsheetActivePaneChangedEventArgs クラス ActivePaneChanged イベント