21st February 2014

    Simulating keyboard events in OSX

    Guides | Tutorial By 3 years ago

    I’m currently writing a program which takes input and simulates it back out as keyboard presses.

    It’s quite easy, and can be done like so: (this simulates Command-C, a copy shortcut)

    A list of character codes for each keyboard key can be found here

    const CGKeyCode keyCode = 8;
    CGEventSourceRef source = CGEventSourceCreate(kCGEventSourceStateCombinedSessionState);
    CGEventRef eventDown = CGEventCreateKeyboardEvent(source, keyCode, YES);
    CGEventSetFlags(eventDown, kCGEventFlagMaskCommand);
    CGEventRef eventUp = CGEventCreateKeyboardEvent(source, keyCode, NO);
    CGEventPost(kCGSessionEventTap, eventDown);
    //	Keep it down for a bit
    CGEventPost(kCGSessionEventTap, eventUp);
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