Matt, it deosn't fire in design time - that's all either create a builder and call that when resizing or let it just resize at run-time ok,ok so you can also have a timer running that will check for changes in sizes for every "registed" object type etc. Arnon > >I tried to make a container class that would look like a black rectangle with a dark gray drop-shadow using rectagles. I put all the 'this.xxx.width=' and 'this.xxx.height=' code in the the resize event of the container, expecting that when I resize the container in design mode, the rectangles would update. > >However, the resize method does not fire in design mode, and the rectangles stay the same size, even though the container frame has been resized. > >What gives?