I don't know why Solidworks does this. This is a problem for like 4 years as i have been using Solidworks.

When in an assembly, select to unsupress any file, it pops up a dialog box to select the part. But it doesn't show file name fully. Especially for files which names are too long, this is a serious problem for me.

for those who can't see picture

http://i.imgur.com/sbxdTKr.jpg