https://bugs.winehq.org/show_bug.cgi?id=56246
--- Comment #3 from Sagawa sagawa.aki+winebugs@gmail.com --- Can you share a link for the executable to examine?
I think what you are talking about is SavePicture statement [1]. I guess the statement internally calls OleSavePictureFile Win32 API. However, Wine's OleSavePictureFile is a stub [2], i.e. it does nothing.
Regarding your topic, SavePicture creates a file and stores an incorrect color depth value. This means that my assumption may be wrong. Since I don't have a VB6 compiler, I need an executable that uses SavePicture to investigate.
[1] https://learn.microsoft.com/en-us/previous-versions/visualstudio/visual-basi...) [2] https://gitlab.winehq.org/wine/wine/-/blob/wine-9.0/dlls/oleaut32/olepicture...