制作涂鸦板

var drawing:Boolean;
 
Mouse.hide(); //隐藏默认的光标
 
stage.addEventListener(MouseEvent.MOUSE_MOVE,Stage_MouseMove);
stage.addEventListener(MouseEvent.MOUSE_DOWN,Stage_MouseDown);
stage.addEventListener(MouseEvent.MOUSE_UP,Stage_MouseUp);
stage.addEventListener(KeyboardEvent.KEY_DOWN,Stage_KeyDown);
 
function Stage_MouseDown(e:MouseEvent):void {
    this.graphics.moveTo(this.mouseX,this.mouseY);//设置划线的起点
    this.graphics.lineStyle(3,0x99cc00,100);//设置笔触大小及颜色
    drawing=true;
}
 
 
function Stage_MouseMove(e:MouseEvent):void {
    //铅笔鼠标跟随
    pen1.x=this.mouseX;
    pen1.y=this.mouseY;
 
    if (drawing) {
        this.graphics.lineTo(this.mouseX,this.mouseY);//关键代码就在这里
    }
    e.updateAfterEvent();
}
 
function Stage_MouseUp(e:MouseEvent):void {
    drawing=false;
}
 
function Stage_KeyDown(e:KeyboardEvent):void {
    if (e.keyCode==Keyboard.DELETE) { //注意这里：虽然代码只写了Delete键，但实际测试中发现如果按Ctrl + Delete组合键，也能触发
        this.graphics.clear();
    }
}