Rebol [ title: "Simple Dll Examples" date: 29-june-2008 file: %dll-examples.r purpose: { A simple example demonstrating how to use functions inside DLLs. Taken from the tutorial at http://musiclessonz.com/rebol_tutorial.html } ] text: ask "Please enter some text: " lib: load/library %User32.dll message-box: make routine! [a [integer!] b [string!] c [string!] d [integer!]] lib "MessageBoxA" message-box 0 text "You typed:" 0 free lib lib: load/library %kernel32.dll play-sound: make routine! [ return: [integer!] pitch [integer!] duration [integer!] ] lib "Beep" for hertz 0 5000 10 [ print rejoin ["The pitch is now " hertz " hertz."] play-sound hertz 50 ] free lib