var cellType = new GC.Spread.Sheets.CellTypes.Button();
cellType.buttonBackColor("#FFFF00");
cellType.text("this is a button");
var style = new GC.Spread.Sheets.Style();
style.backColor = "red";
style.borderLeft =new GC.Spread.Sheets.LineBorder("blue",GC.Spread.Sheets.LineStyle.medium);
style.borderTop = new GC.Spread.Sheets.LineBorder("blue",GC.Spread.Sheets.LineStyle.medium);
style.borderRight = new GC.Spread.Sheets.LineBorder("blue",GC.Spread.Sheets.LineStyle.medium);
style.borderBottom = new GC.Spread.Sheets.LineBorder("blue",GC.Spread.Sheets.LineStyle.medium);
style.cellType = cellType
activeSheet.setStyle(1,1,style,GC.Spread.Sheets.SheetArea.viewport);