diff --git a/src/base/combination/combo.js b/src/base/combination/combo.js
index f1e328b3c..c5f78040d 100644
--- a/src/base/combination/combo.js
+++ b/src/base/combination/combo.js
@@ -288,13 +288,13 @@ BI.Combo = BI.inherit(BI.Widget, {
         this.fireEvent(BI.Combo.EVENT_AFTER_HIDEVIEW);
     },
 
-    _popupView: function () {
+    _popupView: function (e) {
         this._assertPopupViewRender();
         this.fireEvent(BI.Combo.EVENT_BEFORE_POPUPVIEW);
 
         this.popupView.visible();
-        this.adjustWidth();
-        this.adjustHeight();
+        this.adjustWidth(e);
+        this.adjustHeight(e);
 
         this.element.addClass(this.options.comboClass);
         BI.Widget._renderEngine.createElement(document).unbind("mousedown." + this.getName()).unbind("mousewheel." + this.getName());
@@ -302,7 +302,7 @@ BI.Combo = BI.inherit(BI.Widget, {
         this.fireEvent(BI.Combo.EVENT_AFTER_POPUPVIEW);
     },
 
-    adjustWidth: function () {
+    adjustWidth: function (e) {
         var o = this.options;
         if (!this.popupView) {
             return;
@@ -320,59 +320,84 @@ BI.Combo = BI.inherit(BI.Widget, {
         }
     },
 
-    adjustHeight: function () {
+    adjustHeight: function (e) {
         var o = this.options, p = {};
         if (!this.popupView) {
             return;
         }
         var isVisible = this.popupView.isVisible();
         this.popupView.visible();
+        var combo = BI.isNotNull(e) ? {
+            element: {
+                offset: function () {
+                    return {
+                        left: e.pageX,
+                        top: e.pageY
+                    };
+                },
+                bounds: function () {
+                    // offset为其相对于父定位元素的偏移
+                    return {
+                        x: e.offsetX,
+                        y: e.offsetY,
+                        width: 0,
+                        height: 24
+                    };
+                },
+                outerWidth: function () {
+                    return 0;
+                },
+                outerHeight: function () {
+                    return 24;
+                }
+            }
+        } : this.combo;
         switch (o.direction) {
             case "bottom":
             case "bottom,right":
-                p = $.getComboPosition(this.combo, this.popupView, o.adjustXOffset, o.adjustYOffset || o.adjustLength, o.isNeedAdjustHeight, ["bottom", "top", "right", "left"], o.offsetStyle);
+                p = $.getComboPosition(combo, this.popupView, o.adjustXOffset, o.adjustYOffset || o.adjustLength, o.isNeedAdjustHeight, ["bottom", "top", "right", "left"], o.offsetStyle);
                 break;
             case "top":
             case "top,right":
-                p = $.getComboPosition(this.combo, this.popupView, o.adjustXOffset, o.adjustYOffset || o.adjustLength, o.isNeedAdjustHeight, ["top", "bottom", "right", "left"], o.offsetStyle);
+                p = $.getComboPosition(combo, this.popupView, o.adjustXOffset, o.adjustYOffset || o.adjustLength, o.isNeedAdjustHeight, ["top", "bottom", "right", "left"], o.offsetStyle);
                 break;
             case "left":
             case "left,bottom":
-                p = $.getComboPosition(this.combo, this.popupView, o.adjustXOffset || o.adjustLength, o.adjustYOffset, o.isNeedAdjustHeight, ["left", "right", "bottom", "top"], o.offsetStyle);
+                p = $.getComboPosition(combo, this.popupView, o.adjustXOffset || o.adjustLength, o.adjustYOffset, o.isNeedAdjustHeight, ["left", "right", "bottom", "top"], o.offsetStyle);
                 break;
             case "right":
             case "right,bottom":
-                p = $.getComboPosition(this.combo, this.popupView, o.adjustXOffset || o.adjustLength, o.adjustYOffset, o.isNeedAdjustHeight, ["right", "left", "bottom", "top"], o.offsetStyle);
+                p = $.getComboPosition(combo, this.popupView, o.adjustXOffset || o.adjustLength, o.adjustYOffset, o.isNeedAdjustHeight, ["right", "left", "bottom", "top"], o.offsetStyle);
                 break;
             case "top,left":
-                p = $.getComboPosition(this.combo, this.popupView, o.adjustXOffset, o.adjustYOffset || o.adjustLength, o.isNeedAdjustHeight, ["top", "bottom", "left", "right"], o.offsetStyle);
+                p = $.getComboPosition(combo, this.popupView, o.adjustXOffset, o.adjustYOffset || o.adjustLength, o.isNeedAdjustHeight, ["top", "bottom", "left", "right"], o.offsetStyle);
                 break;
             case "bottom,left":
-                p = $.getComboPosition(this.combo, this.popupView, o.adjustXOffset, o.adjustYOffset || o.adjustLength, o.isNeedAdjustHeight, ["bottom", "top", "left", "right"], o.offsetStyle);
+                p = $.getComboPosition(combo, this.popupView, o.adjustXOffset, o.adjustYOffset || o.adjustLength, o.isNeedAdjustHeight, ["bottom", "top", "left", "right"], o.offsetStyle);
                 break;
             case "left,top":
-                p = $.getComboPosition(this.combo, this.popupView, o.adjustXOffset || o.adjustLength, o.adjustYOffset, o.isNeedAdjustHeight, ["left", "right", "top", "bottom"], o.offsetStyle);
+                p = $.getComboPosition(combo, this.popupView, o.adjustXOffset || o.adjustLength, o.adjustYOffset, o.isNeedAdjustHeight, ["left", "right", "top", "bottom"], o.offsetStyle);
                 break;
             case "right,top":
-                p = $.getComboPosition(this.combo, this.popupView, o.adjustXOffset || o.adjustLength, o.adjustYOffset, o.isNeedAdjustHeight, ["right", "left", "top", "bottom"], o.offsetStyle);
+                p = $.getComboPosition(combo, this.popupView, o.adjustXOffset || o.adjustLength, o.adjustYOffset, o.isNeedAdjustHeight, ["right", "left", "top", "bottom"], o.offsetStyle);
                 break;
             case "top,custom":
             case "custom,top":
-                p = $.getTopAdaptPosition(this.combo, this.popupView, o.adjustYOffset || o.adjustLength, o.isNeedAdjustHeight);
+                p = $.getTopAdaptPosition(combo, this.popupView, o.adjustYOffset || o.adjustLength, o.isNeedAdjustHeight);
                 break;
             case "custom,bottom":
             case "bottom,custom":
-                p = $.getBottomAdaptPosition(this.combo, this.popupView, o.adjustYOffset || o.adjustLength, o.isNeedAdjustHeight);
+                p = $.getBottomAdaptPosition(combo, this.popupView, o.adjustYOffset || o.adjustLength, o.isNeedAdjustHeight);
                 break;
             case "left,custom":
             case "custom,left":
-                p = $.getLeftAdaptPosition(this.combo, this.popupView, o.adjustXOffset || o.adjustLength);
+                p = $.getLeftAdaptPosition(combo, this.popupView, o.adjustXOffset || o.adjustLength);
                 delete p.top;
                 delete p.adaptHeight;
                 break;
             case "custom,right":
             case "right,custom":
-                p = $.getRightAdaptPosition(this.combo, this.popupView, o.adjustXOffset || o.adjustLength);
+                p = $.getRightAdaptPosition(combo, this.popupView, o.adjustXOffset || o.adjustLength);
                 delete p.top;
                 delete p.adaptHeight;
                 break;
@@ -443,9 +468,9 @@ BI.Combo = BI.inherit(BI.Widget, {
         return this.isEnabled() && this.combo.isEnabled() && !!this.popupView && this.popupView.isVisible();
     },
 
-    showView: function () {
+    showView: function (e) {
         if (this.isEnabled() && this.combo.isEnabled()) {
-            this._popupView();
+            this._popupView(e);
         }
     },
 
diff --git a/src/base/single/button/button.basic.js b/src/base/single/button/button.basic.js
index 2f3583c60..68a348dfa 100644
--- a/src/base/single/button/button.basic.js
+++ b/src/base/single/button/button.basic.js
@@ -285,7 +285,7 @@ BI.BasicButton = BI.inherit(BI.Single, {
         }
     },
 
-    _trigger: function () {
+    _trigger: function (e) {
         var o = this.options;
         if (!this.isEnabled()) {
             return;
@@ -296,9 +296,9 @@ BI.BasicButton = BI.inherit(BI.Single, {
                     this.setSelected(!this.isSelected()));
         }
         if (this.isValid()) {
-            o.handler.call(this, this.getValue(), this);
+            o.handler.call(this, this.getValue(), this, e);
             var v = this.getValue();
-            this.fireEvent(BI.Controller.EVENT_CHANGE, BI.Events.CLICK, v, this);
+            this.fireEvent(BI.Controller.EVENT_CHANGE, BI.Events.CLICK, v, this, e);
             this.fireEvent(BI.BasicButton.EVENT_CHANGE, v, this);
             if (o.action) {
                 BI.Actions.runAction(o.action, "click", o);
@@ -311,7 +311,7 @@ BI.BasicButton = BI.inherit(BI.Single, {
         if (this.isValid()) {
             this.beforeClick(e);
         }
-        this._trigger();
+        this._trigger(e);
         if (this.isValid()) {
             this.doClick(e);
         }
diff --git a/src/widget/downlist/combo.downlist.js b/src/widget/downlist/combo.downlist.js
index 409491328..654f85d4a 100644
--- a/src/widget/downlist/combo.downlist.js
+++ b/src/widget/downlist/combo.downlist.js
@@ -69,8 +69,8 @@ BI.DownListCombo = BI.inherit(BI.Widget, {
         this.downlistcombo.hideView();
     },
 
-    showView: function () {
-        this.downlistcombo.showView();
+    showView: function (e) {
+        this.downlistcombo.showView(e);
     },
 
     populate: function (items) {
diff --git a/src/widget/multilayerdownlist/combo.downlist.js b/src/widget/multilayerdownlist/combo.downlist.js
index dff06a23d..cdbea543b 100644
--- a/src/widget/multilayerdownlist/combo.downlist.js
+++ b/src/widget/multilayerdownlist/combo.downlist.js
@@ -68,8 +68,8 @@ BI.DownListCombo = BI.inherit(BI.Widget, {
         this.downlistcombo.hideView();
     },
 
-    showView: function () {
-        this.downlistcombo.showView();
+    showView: function (e) {
+        this.downlistcombo.showView(e);
     },
 
     populate: function (items) {