This patch fixes [#17423] Mouse wheel zoom lost after rendering.
http://projects.blender.org/tracker/index.php?func=detail&aid=17423&group_id=9&atid=125
This problem occurs in 2.5 too. But the patch is very easy to adapt to 2.5. Its essentially the same but without the "break;" in the WM_SIZE case because this is already present in 2.5.
Description
Description