activeSheet.setRowCount(3, GcSpread.Sheets.SheetArea.viewport);
activeSheet.setColumnCount(3, GcSpread.Sheets.SheetArea.viewport);

     activeSheet.isPaintSuspended(true);
            //set value
            for (var r = 0, rc = activeSheet.getRowCount(); r < rc; r++) {
                for (var c = 0, cc = activeSheet.getColumnCount(); c < cc; c++) {
                    activeSheet.setValue(r, c, r + c);
                }
           }
activeSheet.isPaintSuspended(false);

$("#button1").click(function () {
var printInfo = activeSheet.printInfo();
printInfo.columnStart(0);
printInfo.columnEnd(2);
printInfo.centering(GcSpread.Sheets.PrintCentering.Horizontal);
activeSheet.printInfo(printInfo);
spread.print(0);
   });