//Custom Cell Type
         function FivePointedStarCellType() {
             this.fillStyle = "orange";
             this.size = 10;
         }
         FivePointedStarCellType.prototype = new GC.Spread.Sheets.CellTypes.Base();
         FivePointedStarCellType.prototype.paint = function (ctx, value, x, y, w, h, style, context) {
             if (!ctx) {
                 return;
             }

            ctx.save();

            // draw inside the cell's boundary
             ctx.rect(x, y, w, h);
             ctx.clip();
             ctx.beginPath();

            if (value) {
                 ctx.fillStyle = this.fillStyle;
             } else {
                 ctx.fillStyle = "gray";
             }

            var size = this.size;
             var dx = x + w / 2;
             var dy = y + h / 2;
             ctx.beginPath();
             var dig = Math.PI / 5 * 4;
             for (var i = 0; i < 5; i++) {
                 ctx.lineTo(dx + Math.sin(i * dig) * size, dy + Math.cos(i * dig) * size);
             }
             ctx.closePath();
             ctx.fill();

            ctx.restore();
         };
         FivePointedStarCellType.prototype.getHitInfo = function (x, y, cellStyle, cellRect, context) {
             var xm = cellRect.x + cellRect.width / 2,
                     ym = cellRect.y + cellRect.height / 2,
                     size = 10;
             var info = { x: x, y: y, row: context.row, col: context.col, cellRect: cellRect, sheetArea: context.sheetArea };
             if (xm - size <= x && x <= xm + size && ym - size <= y && y <= ym + size) {
                 info.isReservedLocation = true;
             }
             return info;
         };
         FivePointedStarCellType.prototype.processMouseUp = function (hitInfo) {
             var sheet = hitInfo.sheet;
             if (sheet && hitInfo.isReservedLocation) {
                 var row = hitInfo.row, col = hitInfo.col, sheetArea = hitInfo.sheetArea;
                 var newValue = !sheet.getValue(row, col, sheetArea);
                 var cellEditInfo = { row: row, col: col, newValue: newValue };
        spread.commandManager().execute({cmd: "editCell", sheetName: activeSheet.name(), row: row, col: col, newValue: newValue});
                 return true;
             }
             return false;
         };

        function FullNameCellType() {
         }
         FullNameCellType.prototype = new GC.Spread.Sheets.CellTypes.Base();
         FullNameCellType.prototype.paint = function (ctx, value, x, y, w, h, style, context) {
             if (value) {
                 GC.Spread.Sheets.CellTypes.Base.prototype.paint.apply(this, [ctx, value.firstName + "." + value.lastName, x, y, w, h, style, context]);
             }
         };
         FullNameCellType.prototype.updateEditor = function (editorContext, cellStyle, cellRect, context) {
             if (editorContext) {
                 $(editorContext).width(cellRect.width);
                 $(editorContext).height(100);
             }
         };
         FullNameCellType.prototype.createEditorElement = function (context) {
             var div = document.createElement("div");
             var $div = $(div);
             $div.attr("gcUIElement", "gcEditingInput");
             $div.css("background-color", "white");
             $div.css("position", "absolute");
             $div.css("overflow", "hidden");
             $div.css("border", "2px #5292f7 solid");
             var $span1 = $("<span></span>");
             $span1.css("display", "block");
             var $span2 = $("<span></span>");
             $span2.css("display", "block");
             var $input1 = $("<input type='text'/>");
             var $input2 = $("<input type='text'/>");
             $div.append($span1);
             $div.append($input1);
             $div.append($span2);
             $div.append($input2);
             return div;
         };
         FullNameCellType.prototype.getEditorValue = function (editorContext) {
             if (editorContext && editorContext.children.length === 4) {
                 var input1 = editorContext.children[1];
                 var firstName = $(input1).val();
                 var input2 = editorContext.children[3];
                 var lastName = $(input2).val();
                 return { firstName: firstName, lastName: lastName };
             }
         };
         FullNameCellType.prototype.setEditorValue = function (editorContext, value) {
             if (editorContext && editorContext.children.length === 4) {
                 var span1 = editorContext.children[0];
                 $(span1).text("First Name:");
                 var span2 = editorContext.children[2];
                 $(span2).text("Last Name:");
                 if (value) {
                     var input1 = editorContext.children[1];
                     $(input1).val(value.firstName);
                     var input2 = editorContext.children[3];
                     $(input2).val(value.lastName);
                 }
             }
         };
         FullNameCellType.prototype.isReservedKey = function (e, context) {
             //cell type handle tab key by itself
             return (e.keyCode === GC.Spread.Commands.Key.tab && !e.ctrlKey && !e.shiftKey && !e.altKey);
         };
         FullNameCellType.prototype.isEditingValueChanged = function (oldValue, newValue,context) {
             if (newValue.firstName != oldValue.firstName || newValue.lastName != oldValue.lastName) {
                 return true;
             }
             return false;
         };
         $(function () {

var spread = new GC.Spread.Sheets.Workbook(document.getElementById("ss"),{sheetCount:3});
             var sheet = spread.getActiveSheet();
             sheet.suspendPaint();
             sheet.setCellType(0, 0, new FivePointedStarCellType());
             sheet.setValue(0, 0, true);
             sheet.setRowHeight(0, 200);
             sheet.setColumnWidth(0, 200);
             sheet.setCellType(0, 1, new FullNameCellType());
             sheet.setColumnWidth(1, 200);
             sheet.setValue(0, 1, { firstName: "Bob", lastName: "Smith" });
             sheet.resumePaint();
         });