C # Move and change control size

The code is relatively simple, not much to parse.

      #regionMove a form to save dataPoint Mouseoff;//mouse Move position variable        BOOLLeftflag;//whether the flag is left button        BOOLLargeflag;//whether the flag changes width and height at the same time        BOOLWidthflag;//whether the flag changes width        BOOLHeightflag;//whether the flag changes height        /// <summary>        ///Mouse Movement/// </summary>        /// <param name= "Sender" ></param>        /// <param name= "E" ></param>        Private voidForm1_mousemove (Objectsender, MouseEventArgs e) {Point Mouseset=control.mouseposition; if(leftflag) {//Change the width and height                if(largeflag) {intDW = Mouseset.x- This.                    location.x; intDH = mouseset.y- This.                    LOCATION.Y;  This. Width =DW;  This. Height =DH; }                //Change Width                Else if(widthflag) {intDW = Mouseset.x- This.                    location.x;  This. Width =DW; }                //Change Height                Else if(heightflag) {intDH = mouseset.y- This.                    LOCATION.Y;  This. Height =DH; }                //Move Position                Else{mouseset.offset (mouseoff.x, mouseoff.y);//set the position after the move                     This. Location =Mouseset; }            }            Else            {                //set the flag to change the width of the form                if(( This. Location.x + This. Width-mouseset.x) <Ten&& ( This. LOCATION.Y + This. HEIGHT-MOUSESET.Y) <Ten)                {                     This. Cursor =Cursors.sizenwse; Largeflag=true; }                //set a flag that changes the width of the form                Else if(( This. Location.x + This. Width-mouseset.x) <Ten)                {                     This. Cursor =Cursors.sizewe; Widthflag=true; }                //set the flag to change the height of the form                Else if(( This. LOCATION.Y + This. HEIGHT-MOUSESET.Y) <Ten)                {                     This. Cursor =Cursors.sizens; Heightflag=true; }                //set the flag for the move position                Else                {                     This. Cursor =Cursors.Default; Largeflag=false; Widthflag=false; Heightflag=false; }            }        }        /// <summary>        ///mouse button down/// </summary>        /// <param name= "Sender" ></param>        /// <param name= "E" ></param>        Private voidForm1_mousedown (Objectsender, MouseEventArgs e) {            if(E.button = =mousebuttons.left) {Mouseoff=NewPoint (-e.x,-e.y);//get the value of a variableLeftflag =true;//Click on the left button when the label is true;            }        }        /// <summary>        ///Mouse pop up/// </summary>        /// <param name= "Sender" ></param>        /// <param name= "E" ></param>        Private voidForm1_mouseup (Objectsender, MouseEventArgs e) {            if(leftflag) {Leftflag=false;//label false after releasing the mouse;            }        }        #endregion

C # Move and change control size