On Fri, 15 Sep 2017, Michael Robinson wrote: > I need to take a demo program that displays a PNG file via Xlib and modify > the output. It is a C program, not C# or C++. Has xlib been replaced by > xcb? I'm developing this for an HDMI projector hooked to a Raspberry Pi 3 > model B. Michael, Have you looked at the extensive ImageMagick toolkit? Rich