Some are implemented with a resize handle on the corner, others let you drag any of the sides. I thought they were kind of cool, so I sat down to see how hard it would be to write. And, surprisingly enough, it is actually pretty easy. So today I'm going to walk through some resizeable textbox code. It is not very pretty, either code-wise or look-wise, but it does get the job done. So what we are going to create today is a textbox with resize handles on the bottom, right, and bottom-right corner. So here is the example.