I've come to the conclusion that it's simply impossible to develop many important applications using exclusively platform-provided GUI elements. I guess the evi

I've come to the conclusion that it's simply impossible to develop many important applications using exclusively platform-provided GUI elements. I guess the evidence of this was always there; after all, Internet Explorer and Office have to implement their own controls, even though they're developed by the same company as Windows. But by all means, if you can implement your applications using native widgets, please do so. You'll be able to make them accessible, internationalized, etc. with much less work.