Screenkey.ahk is a tool that displays the keys that you type anywhere in Windows. It can be useful for screencasts or remote help.
It is available as an Autohotkey script or standalone executable.
There are a few customization options that can be tweaked at the top of the script:
Font settings
fontSize := 20
fontName := "Verdana"
fontStyle := "Bold"
Maximum number of keys that can be displayed on the screen at any time
numButtons := 5
Gui transparency:
transparent := true
Distance from the buttons to the edge of the window
winMargin := 25
Combo timer (in miliseconds). Old keys are cleared from display when a new key is pressed after the interval. All keys typed within the interval will be displayed at the same time. Set to 0 to disable.
comboTimer := 1000
Clear timer (in miliseconds). Clear everything in the UI after this interval. Set to 0 to never clear.
clearTimer := 5000
Hide UI hotkey. Press this hotkey to hide the UI elements of the Screenkey window (the captured keys will still be displayed). Default is Ctrl+Shift+h
hideUIHotkey := ^+h
The script or the exe can be run with command line parameters. The name of the params is the same as the settings above. Use -notransparent to turn transparency off.
screenkey.exe -numButtons 9 -fontName Rockwell -fontSize 50 -comboTimer 300 -notransparent