Это?
Там есть пример для ctrl alt cmd + t
I'm posting the code that worked for my case.
I'm adding the global event handler after the app launches. My shortcut makes ctrl+alt+cmd+T open my app.
- (void) applicationWillFinishLaunching:(NSNotification *)aNotification
{
// Register global key handler, passing a block as a callback function
[NSEvent addGlobalMonitorForEventsMatchingMask:NSKeyDownMask
handler:^(NSEvent *event){
// Activate app when pressing cmd+ctrl+alt+T
if([event modifierFlags] == 1835305 && [[event charactersIgnoringModifiers] compare:@"t"] == 0) {
[NSApp activateIgnoringOtherApps:YES];
}
}];
}