Modifications:

• Flashes the entire screen instead of a 16px bar at the top of the screen (configurable)
• Moved all configuration options to the same place (near top of file, just below the '#include's)
• Properly pass through keyboard/mouse events from the flash window to the windows that it is covering
• Added oneshot mode (instead of listening for X11 bell events, makes a single flash jnd then exits)

Usage:

Configure xvisbell.cpp as desired - options are near the top of the file, just under the #includes. Run make, then run the generated xvisbell. Run make install to install the binary.

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Original xvisbell readme:

xvisbell

This is a simple program that flashes a white window on the screen whenever the X11 bell is rung.

The typical way to use this program is to run it in the background in your .xsession/.xinitrc file. Works best when used with dwm & xmonad & friends.

Why would I use this?

If you're like me and you are constantly pressing ^G in Emacs, audio bells can be annoying. Visual bells are less annoying.

How do I configure this?

Edit xvisbell.cpp. If you don't know how to program, then learn how to program.