var location = this.options.location; //获取当前控件的位置
var cr = FR.cellStr2ColumnRow(location);
var col = cr.col; //列号
var ro = cr.row; //行号
var L4 = contentPane.curLGP.getCellValue(FR.columnRow2CellStr({col: col-3, row: ro}));
contentPane.setCellValue("M1",null,L4);