289Simulating Keyboard & Mouse Events. And Key-Modifier Events

Creating and Posting a Keyboard Event:
CGEventRef sDown, sUp;
sDown = CGEventCreateKeyboardEvent (
			NULL,
			(CGKeyCode)1,
			true
);
CGEventSetFlags(sDown, kCGEventFlagMaskShift);  

// setting flags with special function. 
// Setting it via CGCreateKeyboardEvent
// would work only for the first time it's run

CGEventPost(kCGHIDEventTap, sDown);

sUp = CGEventCreateKeyboardEvent (
			NULL,
			(CGKeyCode)1,
			false
);
CGEventPost(kCGHIDEventTap, sUp);

CFRelease(sDown);
CFRelease(sUp);
That leaves the door open for applying the same to mouse events:
CGEventRef mouseEvent;
mouseEvent = CGEventCreateMouseEvent (
			NULL,
			kCGEventMouseMoved,
			CGPointMake(100, 100),
			kCGMouseButtonLeft
);
CGEventPost(kCGHIDEventTap, mouseEvent );
Magical. Isn’t it. Of course, in pre-10.6 days it would have looked like that:
CGPostKeyboardEvent (0,5,true);
CGPostKeyboardEvent (0,5,false);