I've set up an ST7735 LCD display, using the Ucglib.h library.
All works fine, except that I want to show a photo of a microphone when recording sound, and a photo of a speaker when playing it back.
To my surprise, I've been unable to locate instructions on how to load a photo into this LCD, although there are pictures showing others have succeeded at doing so.
Suggestions?
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Well, the next day, I pretty well answered my own question. Adafruit, has a section on Displaying Bitmaps on my little LCD, and evidently provide the only library that can do so.
However, there is the major problem of files from some sources having been updated while files from other sources were not. And patching core Arduaino files to make my LCD display bitmaps, would probably cause other parts of Arduaino to stop working.
So.... I'm better off just sticking with the graphic functions I have, and forgetting about bitmaps.
Here are the most important references on which the above comments are based:
Displaying Bitmaps
The Adafruit_GFX library
The Adafruit-ST7735-Library
Demo Sketches for TFT-LCD
Sketch won't compile