[1/2] user32: fix FindWindowEx behavior if window name is an empty charachter

[Louis Lenders]

> It would be better to avoid duplicate GetWindowTextW() calls.

I thought a long time how to fix this, but i couldn't find another way than this one, because we need to find out whether or not the window title is empty, and afaik we can only do that by calling GetWindowText (again). If you have another way that i overlooked, please let me know

Regards Louis

[1/2] user32: fix FindWindowEx behavior if window name is an empty charachter

[Ricardo Filipe]

2010/10/5 Louis Lenders :
> > It would be better to avoid duplicate GetWindowTextW() calls.
>
> I thought a long time how to fix this, but i couldn't find another way than this one, because we need to find out whether or not the window title is empty, and afaik we can only do that by calling GetWindowText (again). If you have another way that i overlooked, please let me know
>
> Regards Louis

doesn't it work if you store the GetWindowText result in a variable
and check that variable in the condition? or you need the two calls to
have the right behaviour (seems unlikely...)?

[1/2] user32: fix FindWindowEx behavior if window name is an empty charachter

[Dmitry Timoshkov]

Louis Lenders  wrote:
> > It would be better to avoid duplicate GetWindowTextW() calls.
>
> I thought a long time how to fix this, but i couldn't find another way than
> this one, because we need to find out whether or not the window title is
> empty, and afaik we can only do that by calling GetWindowText (again). If
> you have another way that i overlooked, please let me know

I sent 2 patches that make your FindWindow() tests pass under Wine. Did you
run the tests after your fix? They don't pass without patching explorer. Also
your test has a typo in the comment, and probably the tests need to go into
their own test function, and not hijack the message window tests.