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>
效果图如下:
