1.將控件的座標轉換成屏幕的座標
KeyBoard.StartPosition = FormStartPosition.Manual;
Point showPoint = ActiveTBox.PointToScreen(new Point(0, ActiveTBox.Height));//此處形參是ActiveTbox中的工作區座標
KeyBoard.Location = new Point(basePoint.X, showPoint.Y+ 50 );2.控件的邊框設置
FlatAppearance.Bordersize
3.窗體初始顯示位置(相對於屏幕,有父窗體的話相對於父窗體)
Form.FormStartPosition=FormStartPosition.Manual;
Form.Location=new Point(x,y);