WMF Support

[Vincent Povirk]

Wine must contain an implementation of WMF because it is tightly
integrated into the public gdi32 API. Some Windows applications are
known to play back WMF files one record at a time and depend on the
device context where they are being rendered to change exactly as it
does on Windows (and this detail is, itself, different between 9x and
NT). For compatibility, Wine needs detailed control over its WMF
reading and rendering, and it needs to expose this to apps that will
misuse it in strange ways.

OleLoadPicture* does not need such things. If oleaut32 were the only
place where Wine needed WMF support, it might be able to use an
external library. Given that we already need to have an implementation
in Wine, it makes sense to use it.

Vincent Povirk