winform 判断鼠标是否在按钮控件范围内

 1         public void MourseLeave()
 2         {
 3             bool b = this.RectangleToScreen(this.ClientRectangle).Contains(MousePosition);
 4 
 5             //Point SQButtonPoint = this.PointToScreen(this.ClientRectangle.Location);
 6             //Point MoursePoint = Control.MousePosition;
 7             //bool MourseSQButton = SQButtonPoint.X + this.Width >= MoursePoint.X && MoursePoint.X >= SQButtonPoint.X && MoursePoint.Y >= SQButtonPoint.Y && SQButtonPoint.Y + this.Height >= MoursePoint.Y;
 8             if (!b)
 9             {
10                 this.BackColor = _NormalColor;
11             }
12         }

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