代码:
package{ import flash.display.*;
import flash.events.MouseEvent;
import flash.text.*;
public class nihao extends MovieClip{
public function nihao()
{ var my_txt:TextField=new TextField();
my_txt.text="我可以开发程序了";
my_txt.border=true;
my_txt.width=100;
my_txt.height=20;
my_txt.borderColor=0xD849E9;
my_txt.backgroundColor=0x000000;
addChild(my_txt);
my_txt.addEventListener(MouseEvent.MOUSE_DOWN,mouseDownScroll);
}
public function mouseDownScroll(event:MouseEvent):void {
my_txt.scrollV++;
}
}
}
测试的结果:访问的属性my_txt未定义
出现错误错在哪里 ?
package{ import flash.display.*;
import flash.events.MouseEvent;
import flash.text.*;
public class nihao extends MovieClip{
public function nihao()
{ var my_txt:TextField=new TextField();
my_txt.text="我可以开发程序了";
my_txt.border=true;
my_txt.width=100;
my_txt.height=20;
my_txt.borderColor=0xD849E9;
my_txt.backgroundColor=0x000000;
addChild(my_txt);
my_txt.addEventListener(MouseEvent.MOUSE_DOWN,mouseDownScroll);
}
public function mouseDownScroll(event:MouseEvent):void {
my_txt.scrollV++;
}
}
}
测试的结果:访问的属性my_txt未定义
出现错误错在哪里 ?