""If all you want is to toss up the occasional message box, or ask a user for some simple input, almost any of the toolkits I've listed will do. For simple requirements, you are likely better off focusing on platform availability, a suitable range of widgets, and appropriate cost. If you plan to distribute your application, you'll want to check the toolkit licensing. You also must be sure either that the user already has the required environment or that you can easily bundle all the needed libraries and widgets in either a stand-alone application or an installation package.
"Once you move to complex applications, though, the requirements get tougher. For any application that goes beyond a few simple forms, you almost certainly want to have a form-designer tool. You also want a rich set of available widgets; you're usually better off reusing an existing date picker or file browser component, for example, than writing your own."
