$(document).ready(function () {
     var spread = new GC.Spread.Sheets.Workbook(document.getElementById("ss"),{sheetCount:3});
     var activeSheet = spread.getActiveSheet();
     activeSheet.setValue(0, 0, "North");
     activeSheet.setValue(1, 0, "South");
     activeSheet.setValue(2, 0, "East");
     activeSheet.setValue(3, 0, "South");
     activeSheet.setValue(4, 0, "North");
     activeSheet.setValue(5, 0, "North");
     activeSheet.setValue(6, 0, "West");
     activeSheet.setColumnWidth(0, 80);
     // 行フィルタを設定します。
    activeSheet.rowFilter(new GC.Spread.Sheets.Filter.HideRowFilter(new GC.Spread.Sheets.Range(0, 0, 7, 1)));
     $("#button1").click(function(){
         var rowFilter = spread.getActiveSheet().rowFilter();
         if(rowFilter.isFiltered(0)){
             console.log("Row-filtering executed for Column1");
         }else{
             console.log("Row-filtering not executed for Column1");
         }
     });
 });