Open Next/Previous - use current dialog filter

[ProgerXP]

#43 is currently using * mask to create the file list that it traverses (n2e_OpenNextFile). #258 implemented remembering of last used open/save dialog filter (iOpenSaveFilterIndex). Make it so that Open Next/Previous now use this filter instead of the hardcoded *. This will allow traversing only files matching the filter which was used last.

[cshnik]

Done.

[ProgerXP]

if (psz[0] == L'*')

This makes an assumption that filters start with * but this is not necessary so. Valid filters like ?foo.* or foo.* won't be recognized. And there can be multiple masks per one filter. You should count \0 pairs instead.

Make it so that Open Next/Previous now use this filter instead of the hardcoded *.

If there was a misunderstanding: I meant that szFileFilter should receive the entire filter string (between two | or \0), not part of that string. For example, for foo|*;*;*|bar|?;?;? with iOpenSaveFilterIndex = 2 it should take ?;?;?, not a single ?.

[cshnik]

This makes an assumption that filters start with * but this is not necessary so. Valid filters like ?foo.* or foo.* won't be recognized.

Fixed.

If there was a misunderstanding: I meant that szFileFilter should receive the entire filter string (between two | or \0), not part of that string. For example, for foo|*;*;*|bar|?;?;? with iOpenSaveFilterIndex = 2 it should take ?;?;?, not a single ?.

Done. But there is a limitation:

1. Multiple file type strings (*.txt;*.doc) work for Open/Save dialogs.
2. Multiple file type strings are not supported by FindFirstFile.