Question

I tried to use Application Scripting Bridge to send my Mac to sleep.
The code look like the following:

#import "Finder.h"
 FinderApplication *Finder = [SBApplication applicationWithBundleIdentifier:@"com.apple.finder"];
        [Finder sleep];

But it doesn’t work. Any ideas why it doesn’t work? No compiling errors or warnings, but it doesn’t work…

Answer 1

As I posted in this answer, I’ve been using the following code for over 8 years without issues:

MDRestartShutdownLogout.h:

#import <CoreServices/CoreServices.h>
/*
    *    kAERestart        will cause system to restart
    *    kAEShutDown       will cause system to shutdown
    *    kAEReallyLogout   will cause system to logout
    *    kAESleep          will cause system to sleep
 */
extern OSStatus MDSendAppleEventToSystemProcess(AEEventID eventToSend);

MDRestartShutdownLogout.m:

#import "MDRestartShutdownLogout.h"

OSStatus MDSendAppleEventToSystemProcess(AEEventID eventToSendID) {
    AEAddressDesc targetDesc;
    static const ProcessSerialNumber kPSNOfSystemProcess = {0, kSystemProcess };
    AppleEvent eventReply = {typeNull, NULL};
    AppleEvent eventToSend = {typeNull, NULL};

    OSStatus status = AECreateDesc(typeProcessSerialNumber,
         &kPSNOfSystemProcess, sizeof(kPSNOfSystemProcess), &targetDesc);

    if (status != noErr) return status;

    status = AECreateAppleEvent(kCoreEventClass, eventToSendID,
          &targetDesc, kAutoGenerateReturnID, kAnyTransactionID, &eventToSend);

    AEDisposeDesc(&targetDesc);

    if (status != noErr) return status;

    status = AESendMessage(&eventToSend, &eventReply,
                          kAENormalPriority, kAEDefaultTimeout);

    AEDisposeDesc(&eventToSend);
    if (status != noErr) return status;
    AEDisposeDesc(&eventReply);
    return status;
}

Note that the above code is based on the code from Technical Q&A QA1134, but mine is re-worked to use AESendMessage() rather than AESend(). AESend() is in HIToolbox.framework, which is in Carbon.framework and is therefore unavailable to 64-bit apps. (AESendMessage() is part of the AE.framework in CoreServices).