Hi All. package components { import mx.core.IToolTip; import mx.managers.ToolTipManager;
public class FastSearchPanel { private var parent:AdvancedTitleWindow; private var tooltip:IToolTip; public function FastSearchPanel(__parent:AdvancedTitleWindow) { parent=__parent; } public function showString(__string:String):void { if (tooltip==null) { open(); } tooltip.text=__string } public function open():void { tooltip=ToolTipManager.createToolTip("",parent.x,parent.y); } public function close():void { if (tooltip!=null) { ToolTipManager.destroyToolTip(tooltip) } } } } when calling ToolTipManager.destroyToolTip(tooltip) builder display error: ArgumentError: Error #2025: The supplied DisplayObject must be a child of the caller. at flash.display::DisplayObjectContainer/getChildIndex() at mx.managers::SystemManager/http://www.adobe.com/2006/flex/mx/internal::rawChildren_getChildIndex ()[C:\dev\flex_201_gmc\sdk\frameworks\mx\managers\SystemManager.as:1659] at mx.managers::SystemChildrenList/removeChild ()[C:\dev\flex_201_gmc\sdk\frameworks\mx\managers\SystemChildrenList.as:130] at mx.managers::ToolTipManagerImpl/destroyToolTip ()[C:\dev\flex_201_gmc\sdk\frameworks\mx\managers\ToolTipManagerImpl.as:1137] at mx.managers::ToolTipManager$/destroyToolTip ()[C:\dev\flex_201_gmc\sdk\frameworks\mx\managers\ToolTipManager.as:341] at cad.components::FastSearchPanel/close ()[D:\_Projects\WebApps\CAD\application\cad\components\FastSearchPanel.as:34] at cad.view::InquireForm/view:InquireForm::onLostFocus ()[D:\_Projects\WebApps\application\view\InquireForm.mxml:103] What wrong?