ExtJs2.2的grid的2个Bug：滚动条以及点击点击行后发生偏移问题

    最近用了很多开源的东西，发现开源的东西也是Bug如云，这不，又遇到了ExtJs2.2中的Grid的Bug。

   bug1：出现纵向滚动条后，将横向滚动条拖到最后，然后会发现每选择一条记录整个grid就会往左移，右边空出一部份空白。

  Bug2：出现横向滚动条后，向右稍拉滚动条，然后点击任意一行，会发现行内容向左偏移，滚动条向右越多，偏移越明显。

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分析：经查Ex.t2.3已无此Bug，跟踪两个代码后总结如下（我可是跟踪了好久的）

Bug1：修改GridView.js文件

    // private
    updateAllColumnWidths : function(){
        var tw = this.getTotalWidth();
        var clen = this.cm.getColumnCount();
        var ws = [];
        for(var i = 0; i < clen; i++){
            ws[i] = this.getColumnWidth(i);
        }
        this.innerHd.firstChild.style.width = this.getOffsetWidth();
        this.innerHd.firstChild.firstChild.style.width = tw;
        this.mainBody.dom.style.width = tw;
        for(var i = 0; i < clen; i++){
            var hd = this.getHeaderCell(i);
            hd.style.width = ws[i];
        }

        var ns = this.getRows(), row, trow;
        for(var i = 0, len = ns.length; i < len; i++){
            row = ns[i];
            row.style.width = tw;
            if(row.firstChild){
                row.firstChild.style.width = tw;
                trow = row.firstChild.rows[0];
            for(var j = 0; j < clen; j++){
                   trow.childNodes[j].style.width = ws[j];
                }
            }
        }

        this.onAllColumnWidthsUpdated(ws, tw);
    },

    // private
    updateColumnWidth : function(col, width){
        var w = this.getColumnWidth(col);
        var tw = this.getTotalWidth();
        this.innerHd.firstChild.style.width = this.getOffsetWidth();
        this.innerHd.firstChild.firstChild.style.width = tw;
        this.mainBody.dom.style.width = tw;
        var hd = this.getHeaderCell(col);
        hd.style.width = w;

        var ns = this.getRows(), row;
        for(var i = 0, len = ns.length; i < len; i++){
            row = ns[i];
            row.style.width = tw;
            if(row.firstChild){
                row.firstChild.style.width = tw;
                row.firstChild.rows[0].childNodes[col].style.width = w;
            }
        }

        this.onColumnWidthUpdated(col, w, tw);
    },

    // private
    updateColumnHidden : function(col, hidden){
        var tw = this.getTotalWidth();
        this.innerHd.firstChild.style.width = this.getOffsetWidth();
        this.innerHd.firstChild.firstChild.style.width = tw;
        this.mainBody.dom.style.width = tw;
        var display = hidden ? 'none' : '';

        var hd = this.getHeaderCell(col);
        hd.style.display = display;

        var ns = this.getRows(), row;
        for(var i = 0, len = ns.length; i < len; i++){
            row = ns[i];
            row.style.width = tw;
            if(row.firstChild){
                row.firstChild.style.width = tw;
                row.firstChild.rows[0].childNodes[col].style.display = display;
            }

        }

        this.onColumnHiddenUpdated(col, hidden, tw);

        delete this.lastViewWidth; // force recalc
        this.layout();
    },

    /**
     * Focuses the specified cell.
     * @param {Number} row The row index
     * @param {Number} col The column index
     */
    focusCell : function(row, col, hscroll){

可是这里不让贴附件。大家自己去这里下载http://download.csdn.net/detail/xzknet/4408844吧。