1) boundsheet field order fixed

2) `WorkSheet.Visibility` implemented (and typed constants)
3) `WorkSheet.Selected` implemented - most of cases require to parse _current_ sheet, not the first one
4) `WorkSheet.rightToLeft` property for future use (not implemented cause no RtL files present)

workbook.go

@@ -246,7 +246,7 @@ func (w *WorkBook) get_string(buf io.ReadSeeker, size uint16) (res string, err e
 
 func (w *WorkBook) addSheet(sheet *boundsheet, buf io.ReadSeeker) {
 	name, _ := w.get_string(buf, uint16(sheet.Name))
-	w.sheets = append(w.sheets, &WorkSheet{bs: sheet, Name: name, wb: w})
+	w.sheets = append(w.sheets, &WorkSheet{bs: sheet, Name: name, wb: w, Visibility: TWorkSheetVisibility(sheet.Visible)})
 }
 
 //reading a sheet from the compress file to memory, you should call this before you try to get anything from sheet

worksheet.go

@@ -7,10 +7,18 @@ import (
 	"unicode/utf16"
 )
 
+type TWorkSheetVisibility byte
+
+const (
+	WorkSheetVisible    TWorkSheetVisibility = 0
+	WorkSheetHidden     TWorkSheetVisibility = 1
+	WorkSheetVeryHidden TWorkSheetVisibility = 2
+)
+
 type boundsheet struct {
 	Filepos uint32
+	Visible TWorkSheetVisibility
 	Type    byte
-	Visible byte
 	Name    byte
 }
 
@@ -19,10 +27,13 @@ type WorkSheet struct {
 	bs         *boundsheet
 	wb         *WorkBook
 	Name       string
+	Selected   bool
+	Visibility TWorkSheetVisibility
 	rows       map[uint16]*Row
 	//NOTICE: this is the max row number of the sheet, so it should be count -1
 	MaxRow      uint16
 	parsed      bool
+	rightToLeft bool
 }
 
 func (w *WorkSheet) Row(i int) *Row {
@@ -56,6 +67,14 @@ func (w *WorkSheet) parseBof(buf io.ReadSeeker, b *bof, pre *bof) *bof {
 	switch b.Id {
 	// case 0x0E5: //MERGEDCELLS
 	// ws.mergedCells(buf)
+	case 0x23E: // WINDOW2
+		var sheetOptions, firstVisibleRow, firstVisibleColumn uint16
+		binary.Read(buf, binary.LittleEndian, &sheetOptions)
+		binary.Read(buf, binary.LittleEndian, &firstVisibleRow)    // not valuable
+		binary.Read(buf, binary.LittleEndian, &firstVisibleColumn) // not valuable
+		buf.Seek(int64(b.Size)-2*3, 1)
+		w.rightToLeft = (sheetOptions & 0x40) != 0
+		w.Selected = (sheetOptions & 0x400) != 0
 	case 0x208: //ROW
 		r := new(rowInfo)
 		binary.Read(buf, binary.LittleEndian, r)