Reading through other stackoverflow questions, and other sources I do see that bind can be used to call a function. Currently I'm working on a program that will communicate with a database (most likely mongodb), and so far I've set up a frame that has 2 inputs per row (key-value). I haven't completely decided whether I want one row per document, or one row per field. Right now, if a user has a lot to type then it wouldn't be ideal for them because you can't see everything you write. So what I was thinking is that, if the user clicks on the entry widget, then the box would become bigger and show them everything they have written. My current line of thinking is that maybe I could create another frame for it and somehow pass onto the information to that?

The actual behavior depends on how you've laid out your widget. This could cause widgets to jump around or the window resize, but every app will be different so it's hard to give a solution that works everywhere.