CocoaDev

THIS RESPONSE DOES NOT WORK!!

Object carrying data about a user action, for example mouse clicks or keyboard presses.

Anybody know how to send a fake mouseUp event to a window or view?

• if you actually want to fake the mouseUp using the below though, you’ll have to post the event using postEvent:atStart:

I would check out this NSEvent class method.

 int type=NSLeftMouseUp;              // for a left mouse up event type
 int windowNumber=[windowToSendEventTo windowNumber];

id fakeMouseUpEvent=[NSEvent mouseEventWithType:type location:NSMakePoint(xValue, yValue) modifierFlags:nil timestamp:nil windowNumber:windowNumber context:nil eventNumber:nil clickCount:1 pressure:nil];

// On NSEvent +(NSEvent *)mouseEventWithType:(NSEventType)type location:(NSPoint)location modifierFlags:(unsigned int)flags timestamp:(NSTimeInterval)time windowNumber:(int)windowNum context:(NSGraphicsContext *)context eventNumber:(int)eventNumber clickCount:(int)clickNumber pressure:(float)pressure

If you want to watch all the events in your program, use NSTraceEvents.

See http://developer.apple.com/technotes/tn2004/tn2124.html for lots of cool tricks.

Watching events go by can be very informative.

To bypass event-handling and forward it to the NSApp’s delegate (I find this very useful in fullscreen games), make a custom subclass of NSApplication (ensuring that the Principal Class is your new subclass), and implement this method:

• (void)sendEvent:(NSEvent *)event { if (self delegate] shouldHandleEvents]) [[self delegate] handleEvent:event]; else [super sendEvent:event]; }

Of course, this assumes your delegate responds to shouldHandleEvents and handleEvent:. Going back to the fullscreen game example, this allows for one to have a Cocoa main menu and have the delegate (controller) handle the events appropriately, thus allowing true MVC. This can also allow for the same controller handle a windowed game, too. -[[RossDude

To be strict about whether the delegate responds, you should check first with respondsToSelector: or conformsToProtocol:

How to watch all the mouse events of the system? (NSTraceEvent is about one perticualr application). —- Google for CGEventTapCreate.

Link to the replies on working with the modifierFlags from a NSEvent

DetectIfShiftKeyIsBeingPressed

NSEvent timestamp is in time since system startup. NSDate doesn’t give a convenient utility to get that, and it’s not easy to find. After much digging I found this in an old cocoa-dev mailing list post:

#import <mach/mach_time.h> #define SKWTimestamp() (((double)mach_absolute_time()) * 1.0e-09)