[Bug 33750] 360 YunPan: Next Button Unavaliable

http://bugs.winehq.org/show_bug.cgi?id=33750

--- Comment #6 from lizhenbo  ---
Most Windows programmers may write a callback function for SHBrowseForFolder()
In this callback function, they may send a BFFM_ENABLEOK message, to
enable/disable the 'OK' button

Some programmers may call SHGetPathFromIDList() to find out which message to
send. But I don't know how the programmers of 360yunpan determine whether to
grey 'OK' button out.