FPointRec.RightButton.Left:=FPointRec.RightButton.Left+offsetX;

       FPointRec.RightButton.Top:=FPointRec.RightButton.Top+offsetY;

     end

     else begin

       MoveX:=MoveX+offsetX;

       MoveY:=MoveY+offsetY;

       if Abs(moveX)>=FMoveStep then

       begin

         FPointRec.RightButton.Left:=FPointRec.RightButton.Left+moveX;

         moveX:=0;

       end;

       if Abs(moveY)>=FMoveStep then

       begin

         FPointRec.RightButton.Top:=FPointRec.RightButton.Top+moveY;

         moveY:=0;

       end;

     end;

     FPointRec.RightButton.PrevP:=FPointRec.RightButton.NextP;

     AlignRightBottom;

end;

//对齐点

procedure TDragClass.AlignLeftMid;

begin

   FPointRec.LeftTop.Left:=FPointRec.LeftMid.Left;

   FPointRec.LeftBottom.Left:=FPointRec.LeftMid.Left;

   FPointRec.TopMid.Top:=FPointRec.LeftTop.Top;

   FPointRec.TopMid.Left:=

     (FPointRec.RightTop.Left+FPointRec.LeftTop.Left) div 2;

   FPointRec.ButtonMid.Top:=FPointrec.LeftBottom.Top;

   FPointRec.ButtonMid.Left:=

     (FPointRec.LeftBottom.Left+FPointRec.RightButton.Left) div 2;

end;

//左中点

procedure TDragClass.MoveLeftMidPoint;

var offsetX:Integer;

begin

     GetCursorPos(FPointRec.LeftMid.NextP);

     offsetX:=FPointRec.LeftMid.NextP.X-FPointRec.LeftMid.PrevP.X;

     if not FisMoveStep then

     begin

       FPointRec.LeftMid.Left:=FPointRec.LeftMid.Left+offsetX;

     end

     else begin

       MoveX:=MoveX+offsetX;

       if Abs(moveX)>=FMoveStep then

       begin

         FPointRec.LeftMid.Left:=FPointRec.LeftMid.Left+moveX;

         moveX:=0;

       end;

     end;

     FPointRec.LeftMid.PrevP:=FPointRec.LeftMid.NextP;

     AlignLeftMid;

end;

//对齐点

procedure TDragClass.AlignTopMid;

begin

   FPointRec.LeftTop.Top:=FPointRec.TopMid.Top;

   FPointRec.RightTop.Top:=FPointRec.TopMid.Top;

   FPointRec.TopMid.Top:=FPointRec.LeftTop.Top;

   FPointRec.LeftMid.Left:=FPointRec.LeftTop.Left;

   FPointRec.LeftMid.Top:=

     (FPointRec.LeftBottom.Top+FPointRec.LeftTop.Top) div 2;

   FPointRec.RightMid.Left:=FPointRec.RightTop.Left;

   FPointRec.RightMid.Top:=

     (FPointRec.RightTop.Top+FPointRec.RightButton.Top) div 2;

end;

//顶中点

procedure TDragClass.MoveTopMidPoint;

var offsetY:Integer;

begin

     GetCursorPos(FPointRec.TopMid.NextP);

     offSetY:=FPointRec.TopMid.NextP.Y-FPointRec.TopMid.PrevP.Y;

     if not FisMoveStep then

     begin

       FPointRec.TopMid.Top:=FPointRec.TopMid.Top+offsetY;

 &

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