Can't figure the menu bar's width.

[gz3z]

Check this out:

MenuA: imageA @"stringA".
MenuB: no image @"largeStringB_asdfasdfasdf"

Result: the MenuB's width have not added the image's width. It shows "largeStringB_as..."

Expert Result: the MenuB's width have added the image's width. It shows "largeStringB_asdfasdfasdf"