listening for media keyboards, saving text and position show what you're reading

SpeakerApplication.m

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+//
+//  SpeakerApplication.m
+//  Speaker
+//
+//  Created by Jeena on 17.11.10.
+//  Copyright 2010 __MyCompanyName__. All rights reserved.
+//
+
+// from http://www.rogueamoeba.com/utm/2007/09/29/
+
+#import "SpeakerApplication.h"
+#import <IOKit/hidsystem/ev_keymap.h>
+#import "SpeakerAppDelegate.h"
+
+
+@implementation SpeakerApplication
+
+- (void)sendEvent:(NSEvent *)event
+{
+    // Catch media key events
+    if ([event type] == NSSystemDefined && [event subtype] == 8)
+    {
+        int keyCode = (([event data1] & 0xFFFF0000) >> 16);
+        int keyFlags = ([event data1] & 0x0000FFFF);
+        int keyState = (((keyFlags & 0xFF00) >> 8)) == 0xA;
+		
+        // Process the media key event and return
+        [self mediaKeyEvent:keyCode state:keyState];
+        return;
+    }
+	
+    // Continue on to super
+    [super sendEvent:event];
+}
+
+- (void)mediaKeyEvent:(int)key state:(BOOL)state
+{
+    switch (key)
+    {
+			// Play pressed
+        case NX_KEYTYPE_PLAY:
+            if (state == NO)
+                [(SpeakerAppDelegate *)[self delegate] speakAction:self];
+            break;
+			
+			// Rewind
+        case NX_KEYTYPE_FAST:
+            if (state == YES)
+                [(SpeakerAppDelegate *)[self delegate] seekForward:self];
+            break;
+			
+			// Previous
+        case NX_KEYTYPE_REWIND:
+            if (state == YES)
+                [(SpeakerAppDelegate *)[self delegate] seekBack:self];
+            break;
+    }
+}
+
+@end