[Ext.Net] 1.x GridPanel列数过多给Menu菜单加滚动条

来源：互联网发布：苹果系统开发linux 编辑：程序博客网时间：2024/05/24 00:43

转自：http://www.ext.net.cn/thread-1944-1-2.html

当GirdPanel列数过多，查看列的显示隐藏时会出现下面下面情况，有部分超出了界面被遮罩住了

要解决这个问题,可通过给菜单加滚动条属性,代码如下
function ready() {
         Ext.override(Ext.menu.Menu, {
            showAt: function (xy, parentMenu, _e) {
                  this.parentMenu = parentMenu;
                  if (!this.el) {
                     this.render();
                  }
                  if (_e !== false) {
                     this.fireEvent("beforeshow", this);
                     xy = this.el.adjustForConstraints(xy);
                  }
                  this.el.setXY(xy);
                  var maxHeight = Ext.getBody().getHeight() - xy[1];
                  if (this.el.getHeight() > maxHeight) {
                     this.el.setHeight(maxHeight);
                     this.el.applyStyles('overflow-y: auto;');
                  }
                  this.el.show();
                  this.hidden = false;
                  this.focus();
                  this.fireEvent("show", this);
            },
            autoWidth: function () {
                  if (/^\d+$/.test(this.width + '')) {
                     this.width += "px";
                  }
            }
         });
      }

在DocumentReady时调用
<ext:resourcemanager id="resManager" runat="server">
      <Listeners>
            <DocumentReady Handler="ready();" />
      </Listeners>
   ext:resourcemanager>

效果图如下: