MouseMove事件被无故触发

Question

在form上有一个按钮，有一个picturebox，本来的操作时：单击按钮，然后触发picturebox的mousedown事件，当mousedown事件被触发之后，才触发mousemove事件，但是不知道为什么，单击完按钮之后马上就触发mousemove事件了请哪位大侠忙我分析一下，谢谢！！

Answer 1

private bool _isWrite = false;private void pictureBoxWrite_MouseDown(object sender, MouseEventArgs e)
        {
            //鼠标按下的时候开始写字
            _isWrite = true;
            time.Enabled = false;            //如果写完一个字，又开始写字
            if (_isRecognitionFinish)
            {
                EventCommunicator.GetInstance().FireResultDispear(_isRecognitionFinish);
                pictureBoxWrite_MouseMove(sender, e);
            }
        }        private void pictureBoxWrite_MouseMove(object sender, MouseEventArgs e)
        {
            //鼠标移动时写字            if (_isWrite)
            {
                Point point = new Point(e.X, e.Y);                //保存写出的每一像素点的坐标
                points[index++] = (short)point.X;
                points[index++] = (short)point.Y;                if (lastpoint.X != 0)
                {
                    g.DrawCurve(BlackPen, new Point[] { point, lastpoint });//写字
                }
                lastpoint = point;
                pictureBox_Write.Refresh();
            }
        }                private void pictureBox_Write_MouseUp(object sender, MouseEventArgs e)
        {
            //鼠标抬起时停止写字
            _isWrite = false;
            time.Enabled = true;
            lastpoint.X = 0;            //设置每一笔画结束的标志
            points[index++] = -1;
            points[index++] = 0;            //开始计时
            time.Start();            //获取鼠标位置
            this.lastPosition = Cursor.Position;
           
        }

Answer 2

你在MouseDown中手工触发了pictureBoxWrite_MouseMove
你跟踪一下代码的执行，应该是moveDown先执行的吧

Answer 3

跟踪了，确实是先执行的MouseMove啊

Answer 4

1 将鼠标移到按钮上
2 点击按钮
3 移动鼠标MoseDown在于MoseMove之后(1)