TRichView.com

Hello all user i have problem in dfference between main page and print preview page.
i type exactly on line "a" character in the main richview edit window. like this:
"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
i push enter button and in the next line i type exactly on line "r" character. like this:
"rrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrr"
then i get print preview from my page .
in print preview i have exactly one line "a" but in next line i have more than one line "r" and is ebout one line and half.
what should i do please help me

It's by design. TRichView and TRichViewEdit components do not support WYSIWYG, lines will be wrapped in different places, not like on paper.
If you need WYSIWYG, use TSRichViewEdit (from ScaleRichView).