[RESOLVED] My Potions are too strong for you Traveller. Cairo Hue Shift?

[dilettante]

Here is a quick and dirty test that uses GDI32. No GDI+, no Cairo, no add-in libraries at all.

It seems to be close to what we're talking about here. The main limitation is that it doesn't have as "Save as PNG" option for tweaked images, which would require the use of some library (GDi+, etc.) since GDI32 has no PNG encoder I'm aware of. Another limitation is that it requires Windows Vista or later: it can't run on Altair Basic or Windows XP.

Bonus: It copes with High and even Per Monitor DPI on Windows 10 (version 1703 Creator's Update) or later. No coding hoops jumped through, it relies on the appcompat option "GDI Scaling."


Easy to test, unzip the archive. Then copy the two images above into the Project folder ("Bottle Yellow Green.png" and "Bottle Light.png"). Runs in the IDE, or better as a compiled EXE.

Probably a bit crude, I just wanted to see what I could get quickly.