Hi,

I am creating a software on Mac and I would like to change the value of an IORegistryEntry. I can view it on the IORegistryExplorer, but I can't edit it. So it's my understanding that I have to edit it via code. Here is my code:

CFMutableDictionaryRef matchingDict = IOServiceNameMatching("AppleUSBMultitouchDriver");
io_service_t service = IOServiceGetMatchingService(kIOMasterPortDefault, matchingDict);
if(service) {
 CFStringRef manufacturer = IORegistryEntryCreateCFProperty(service, CFSTR("Manufacturer"), kCFAllocatorDefault,0);
 NSLog(@"%@", (NSString*)manufacturer);
 kern_return_t err = IORegistryEntrySetCFProperty(service, CFSTR("Manufacturer"), CFSTR("test"));
 NSLog(@"error = %d", err);
}

This will output

2010-04-10 16:09:09.015 Test[41548:a0f] Apple Inc.
2010-04-10 16:09:09.015 Test[41548:a0f] error = 0

But after I check the value in the IORegistryExplorer, it still doesn't change. Does anybody have any suggestions?

Thank you