Flex TextInput tooltip 当超过组件长度时显示
如标题所说，直接上代码
protected function changeHandler(event:TextOperationEvent){//通过UIComponent的measureText方法得到TextLineMetrics，它的width就能得到输入框字符所占的真实widthvar charsWidth:int = txtInput.measureText(txtInput.text).width;if (charsWidth > txtInput.width) //与textinput的width进行比较{txtInput.toolTip = txtInput.text;}else{txtInput.toolTip = "";}}<s:TextInput id="txtInput" change="changeHandler(event)"/>?