调试易

缩小
this.width=this.width*0.9
this.height=this.height*0.9
增长this.width=this.width*1.1
this.height=this.height*1.1

我自己解决了            if (e.Button == MouseButtons.Left)
            {
                
                this.Width = this.Width * 9/10;
                this.Height = this.Height *  9/10;
            }
            if (e.Button == MouseButtons.Right)
            {
                this.Width = this.Width * 11/10;
                this.Height = this.Height * 11/10;
            }
谢谢大家

如果是固定10%时。
load的时候把长宽存起来
_w=this.width*0.1;
_h=this.height*0.1;Left时
this.width -= _w;
this.height -= _h;right时
this.width += _w;
this.height += _h;如果想每次都放大、缩小　10%
this.width = this.width*0.9;
this.height = this.height*0.9;this.width=this.width*1.1
this.height=this.height*1.1