boolean isSheetVeryHidden(int sheetIx);
/**
- * Hide or unhide a sheet
+ * Hide or unhide a sheet.
+ *
+ * Please note that the sheet currently set as active sheet (sheet 0 in a newly
+ * created workbook or the one set via setActiveSheet()) cannot be hidden.
*
* @param sheetIx the sheet index (0-based)
* @param hidden True to mark the sheet as hidden, false otherwise
* <li>1 - hidden. </li>
* <li>2 - very hidden.</li>
* </ul>
+ *
+ * Please note that the sheet currently set as active sheet (sheet 0 in a newly
+ * created workbook or the one set via setActiveSheet()) cannot be hidden.
+ *
* @param sheetIx the sheet index (0-based)
* @param hidden one of the following <code>Workbook</code> constants:
* <code>Workbook.SHEET_STATE_VISIBLE</code>,
/**
* Hide or unhide a sheet
+ *
+ * Please note that the sheet currently set as active sheet (sheet 0 in a newly
+ * created workbook or the one set via setActiveSheet()) cannot be hidden.
*
* @param sheetIx the sheet index (0-based)
* @param hidden True to mark the sheet as hidden, false otherwise
* <li>1 - hidden. </li>
* <li>2 - very hidden.</li>
* </ul>
+ *
+ * Please note that the sheet currently set as active sheet (sheet 0 in a newly
+ * created workbook or the one set via setActiveSheet()) cannot be hidden.
+ *
* @param sheetIx the sheet index (0-based)
* @param hidden one of the following <code>Workbook</code> constants:
* <code>Workbook.SHEET_STATE_VISIBLE</code>,
* Calling <code>setSheetHidden(sheetIndex, false)</code> is equivalent to
* <code>setSheetHidden(sheetIndex, Workbook.SHEET_STATE_VISIBLE)</code>.
* </p>
+ *
+ * Please note that the sheet currently set as active sheet (sheet 0 in a newly
+ * created workbook or the one set via setActiveSheet()) cannot be hidden.
*
* @param sheetIx the 0-based index of the sheet
* @param hidden whether this sheet is hidden
* <li>1 - hidden. </li>
* <li>2 - very hidden.</li>
* </ul>
+ *
+ * Please note that the sheet currently set as active sheet (sheet 0 in a newly
+ * created workbook or the one set via setActiveSheet()) cannot be hidden.
+ *
* @param sheetIx the sheet index (0-based)
* @param state one of the following <code>Workbook</code> constants:
* <code>Workbook.SHEET_STATE_VISIBLE</code>,