The standard Dialog is usually not scrollable per se, but only if its content is really huge which seems to be the case for you.
You can work around this by manually controlling the sizes of all added layouts (for example: header → 100px, content → 500px, footer → 200px), and making the content layout scrollable if it’s content uses more space than you allowed. This way, the whole Dialog will never be so big as to be scrollable itself.
Kaspar Scherrer:
The standard Dialog is not scrollable per se, only if the content is really huge which seems to be the case for you.
You can work around this by manually controlling the sizes of all content, and making the content layout scrollable if it’s content uses more space than you allowed. This way, the whole Dialog will never be so big as to be scrollable itself.
Yes setting the height as percentage instead of pixels will also work. As long as the content-layout is not given indefinite height then the dialog itself will not be scrollable.