bug#13065: Bug in x-file-dialog with GetOpenFileName

[Jason Rumney]

Eli Zaretskii <eliz@gnu.org> writes:

>> Is it not just a case of doing the same as we did previously?
>> 
>>   /* If we compile with _WIN32_WINNT set to 0x0400 (for NT4
>>      compatibility) we end up with the old file dialogs. Define a big
>>      enough struct for the new dialog to trick GetOpenFileName into
>>      giving us the new dialogs on newer versions of Windows.  */
>
> Sorry, I don't understand: we still do what the above comment
> describes.

I meant maybe we need to increase the size of the struct again to fool
Windows 7 into thinking we are compiling against a more recent version
of the SDK.