OSX API To Read “System Preferences > Keyboard > Modifier Keys”
Is there an official API for reading the current settings in "System Preferences > Keyboard > Modifier Keys ..." on OSX (10.11.6 hopefully in a forward-compatible manner) from a C program (Carbon/CoreFoundation ...) which intended to run from command line (no UI)?
I have seen How can I change modifier keys in "System Preferences > Keyboard > Modifier Keys..." and (referenced) Does anyone know where OSX stores the settings in System Preferences > Keyboard > Modifier Keys? but neither provide an "official" API.
I also came across Replacement for deprecated NXOpenEventStatus? answer while digging in IOHID headers and using keywords to search. It seemed promising looking at the output which contained HIDKeyboardModifierMappingPairs
. However, running the answer's example shows an empty HIDKeyboardModifierMappingPairs
CFArray
.
Pasting the code for ease of reference and output snippet:
#import <Foundation/Foundation.h>
#import <IOKit/hidsystem/IOHIDLib.h>
#import <IOKit/hidsystem/IOHIDParameter.h>
int main(int argc, const char * argv)
@autoreleasepool
io_service_t service = IORegistryEntryFromPath(kIOMasterPortDefault, kIOServicePlane ":/IOResources/IOHIDSystem");
CFDictionaryRef parameters = IORegistryEntryCreateCFProperty(service, CFSTR(kIOHIDParametersKey), kCFAllocatorDefault, kNilOptions);
NSLog(@"%@", parameters);
IOObjectRelease(service);
return 0;
and output snippet:
2018-11-10 17:32:38.564 iohidparam_mout[22543:1699981]
...
HIDKeyboardModifierMappingPairs = (
);
...
Bonus: Is there a notification service for when the user updates these settings through System Preferences?
c objective-c macos
add a comment |
Is there an official API for reading the current settings in "System Preferences > Keyboard > Modifier Keys ..." on OSX (10.11.6 hopefully in a forward-compatible manner) from a C program (Carbon/CoreFoundation ...) which intended to run from command line (no UI)?
I have seen How can I change modifier keys in "System Preferences > Keyboard > Modifier Keys..." and (referenced) Does anyone know where OSX stores the settings in System Preferences > Keyboard > Modifier Keys? but neither provide an "official" API.
I also came across Replacement for deprecated NXOpenEventStatus? answer while digging in IOHID headers and using keywords to search. It seemed promising looking at the output which contained HIDKeyboardModifierMappingPairs
. However, running the answer's example shows an empty HIDKeyboardModifierMappingPairs
CFArray
.
Pasting the code for ease of reference and output snippet:
#import <Foundation/Foundation.h>
#import <IOKit/hidsystem/IOHIDLib.h>
#import <IOKit/hidsystem/IOHIDParameter.h>
int main(int argc, const char * argv)
@autoreleasepool
io_service_t service = IORegistryEntryFromPath(kIOMasterPortDefault, kIOServicePlane ":/IOResources/IOHIDSystem");
CFDictionaryRef parameters = IORegistryEntryCreateCFProperty(service, CFSTR(kIOHIDParametersKey), kCFAllocatorDefault, kNilOptions);
NSLog(@"%@", parameters);
IOObjectRelease(service);
return 0;
and output snippet:
2018-11-10 17:32:38.564 iohidparam_mout[22543:1699981]
...
HIDKeyboardModifierMappingPairs = (
);
...
Bonus: Is there a notification service for when the user updates these settings through System Preferences?
c objective-c macos
add a comment |
Is there an official API for reading the current settings in "System Preferences > Keyboard > Modifier Keys ..." on OSX (10.11.6 hopefully in a forward-compatible manner) from a C program (Carbon/CoreFoundation ...) which intended to run from command line (no UI)?
I have seen How can I change modifier keys in "System Preferences > Keyboard > Modifier Keys..." and (referenced) Does anyone know where OSX stores the settings in System Preferences > Keyboard > Modifier Keys? but neither provide an "official" API.
I also came across Replacement for deprecated NXOpenEventStatus? answer while digging in IOHID headers and using keywords to search. It seemed promising looking at the output which contained HIDKeyboardModifierMappingPairs
. However, running the answer's example shows an empty HIDKeyboardModifierMappingPairs
CFArray
.
Pasting the code for ease of reference and output snippet:
#import <Foundation/Foundation.h>
#import <IOKit/hidsystem/IOHIDLib.h>
#import <IOKit/hidsystem/IOHIDParameter.h>
int main(int argc, const char * argv)
@autoreleasepool
io_service_t service = IORegistryEntryFromPath(kIOMasterPortDefault, kIOServicePlane ":/IOResources/IOHIDSystem");
CFDictionaryRef parameters = IORegistryEntryCreateCFProperty(service, CFSTR(kIOHIDParametersKey), kCFAllocatorDefault, kNilOptions);
NSLog(@"%@", parameters);
IOObjectRelease(service);
return 0;
and output snippet:
2018-11-10 17:32:38.564 iohidparam_mout[22543:1699981]
...
HIDKeyboardModifierMappingPairs = (
);
...
Bonus: Is there a notification service for when the user updates these settings through System Preferences?
c objective-c macos
Is there an official API for reading the current settings in "System Preferences > Keyboard > Modifier Keys ..." on OSX (10.11.6 hopefully in a forward-compatible manner) from a C program (Carbon/CoreFoundation ...) which intended to run from command line (no UI)?
I have seen How can I change modifier keys in "System Preferences > Keyboard > Modifier Keys..." and (referenced) Does anyone know where OSX stores the settings in System Preferences > Keyboard > Modifier Keys? but neither provide an "official" API.
I also came across Replacement for deprecated NXOpenEventStatus? answer while digging in IOHID headers and using keywords to search. It seemed promising looking at the output which contained HIDKeyboardModifierMappingPairs
. However, running the answer's example shows an empty HIDKeyboardModifierMappingPairs
CFArray
.
Pasting the code for ease of reference and output snippet:
#import <Foundation/Foundation.h>
#import <IOKit/hidsystem/IOHIDLib.h>
#import <IOKit/hidsystem/IOHIDParameter.h>
int main(int argc, const char * argv)
@autoreleasepool
io_service_t service = IORegistryEntryFromPath(kIOMasterPortDefault, kIOServicePlane ":/IOResources/IOHIDSystem");
CFDictionaryRef parameters = IORegistryEntryCreateCFProperty(service, CFSTR(kIOHIDParametersKey), kCFAllocatorDefault, kNilOptions);
NSLog(@"%@", parameters);
IOObjectRelease(service);
return 0;
and output snippet:
2018-11-10 17:32:38.564 iohidparam_mout[22543:1699981]
...
HIDKeyboardModifierMappingPairs = (
);
...
Bonus: Is there a notification service for when the user updates these settings through System Preferences?
c objective-c macos
c objective-c macos
edited Nov 11 '18 at 23:59
user8583031
asked Nov 11 '18 at 1:48
user8583031user8583031
264
264
add a comment |
add a comment |
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