2ea85ea6d7
The special use context of fl_read_image() inside the draw() function of an Fl_Double_Window, where the function should read inside the window's double buffer rather than the on-screen window, no longer worked. Removal of all uses of the fl_window global variable from platform-independent code remains necessary, because this variable is ill-defined in the Wayland/X11 library.
README - Fast Light Tool Kit (FLTK) Version 1.4.0
WHAT IS FLTK?
The Fast Light Tool Kit ("FLTK", pronounced "fulltick") is a
cross-platform C++ GUI toolkit for UNIX®/Linux® (X11 or
Wayland), Microsoft® Windows®, and macOS®.
FLTK provides modern GUI functionality without the bloat and
supports 3D graphics via OpenGL® and its built-in GLUT
emulation. It was originally developed by Mr. Bill Spitzak
and is currently maintained by a small group of developers
across the world with a central repository on GitHub.
For more information see README.txt:
https://github.com/fltk/fltk/blob/master/README.txt
