Digital Light & Color

Having discovered some deficiencies in GDI+ for reading and writing image files, I discovered that there is another set of routines buried in Windows call WIC (Windows Imaging Component) which is evidently somewhat newer are more fully featured. I am in the process of converting to WIC -- reading and writing image data seems to be pretty straightforward, but reading and writing metadata is a lot more complicated than with GDI+.

If I can get metadata to work, the good news is that WIC supports LZW and ZIP TIFF compression, and also various compression options for JPEG, and it should simplify the rest of the image file code in PWP.

So very interesting to hear how the development takes place. Thanks for sharing some of the background information.

The reason I mention this in part is that if and when the code is switched over to WIC, there are likely to be residual problems with metadata for one or more of the different file types, so it will be something to keep and eye out for.