[PATCH 18/18] comctl32: TaskDialog - Add ability to cancel dialog

[Marvin]

Hi,

While running your changed tests on Windows, I think I found new failures.
Being a bot and all I'm not very good at pattern recognition, so I might be
wrong, but could you please double-check?
Full results can be found at
https://testbot.winehq.org/JobDetails.pl?Key=28906

Your paranoid android.


=== w8 (32 bit taskdialog) ===
02f0:taskdialog: unhandled exception c0000005 at 00472B00

=== w7pro64 (64 bit taskdialog) ===
0828:taskdialog: unhandled exception c0000005 at 000000000046211E

=== w864 (64 bit taskdialog) ===
0fb0:taskdialog: unhandled exception c0000005 at 000000000046211E