ef1c937606
The bug is that the app freezes for a few seconds before the yellow transient window is closed if the close message is set from within a timer callback. If the window to close returns NO to the canBecomeKeyWindow message, the bug does not occur. Anyway it's good that canBecomeKeyWindow returns NO for a window with the OUTPUT flag.
README - Fast Light Tool Kit (FLTK) Version 1.4.0
** This FLTK repository is now our official source code repository. **
WHAT IS FLTK?
The Fast Light Tool Kit ("FLTK", pronounced "fulltick") is a
a cross-platform C++ GUI toolkit for UNIX(r)/Linux(r) (X11),
Microsoft(r) Windows(r), and MacOS(r) X. FLTK provides
modern GUI functionality without the bloat and supports 3D
graphics via OpenGL(r) 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 in the US.
For more information see file README.