C# 获取鼠标在屏幕上的位置

获取鼠标位置及鼠标单击了哪个按键。
private void getmousepoint()
{
     point ms = control.mouseposition;
     this.label2.text = string.format("当前鼠标位置：{0}:{1}", ms.x, ms.y);
     mousebuttons mb = control.mousebuttons;

    //  获取鼠标动作（按下了 那个按键)
     if (mb == system.windows.forms.mousebuttons.left) this.label1.text = "left";           
     if (mb == system.windows.forms.mousebuttons.right) this.label1.text = "right";
     if (mb == system.windows.forms.mousebuttons.middle) this.label1.text = "middle";

}

//更新鼠标位置等信息。
private void timer1_tick(object sender, eventargs e)
{
     getmousepoint();
}