Fix `-Wdeprecated-declarations` warnings for NSEvent constants

Use the new constants on Mac OS X 10.13 and higher.

Fix these deprecation warnings:

    clang -x objective-c \
        -fobjc-arc \
        -c \
        DDHotKeyAppDelegate.m
    DDHotKeyAppDelegate.m:43:61: warning: 'NSControlKeyMask' is deprecated: first deprecated in macOS 10.12 [-Wdeprecated-declarations]
            if (![c registerHotKeyWithKeyCode:kVK_ANSI_V modifierFlags:NSControlKeyMask target:self action:@selector(hotkeyWithEvent:) object:nil]) {
                                                                       ^~~~~~~~~~~~~~~~
                                                                       NSEventModifierFlagControl
    /Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/System/Library/Frameworks/AppKit.framework/Headers/NSEvent.h:178:35: note: 'NSControlKeyMask' has been explicitly marked deprecated here
    static const NSEventModifierFlags NSControlKeyMask            API_DEPRECATED_WITH_REPLACEMENT("NSEventModifierFlagControl", macos(10.0,10.12)) = NSEventModifierFlagControl;
                                      ^
    DDHotKeyAppDelegate.m:54:62: warning: 'NSControlKeyMask' is deprecated: first deprecated in macOS 10.12 [-Wdeprecated-declarations]
            if (![c registerHotKeyWithKeyCode:kVK_ANSI_V modifierFlags:(NSControlKeyMask | NSAlternateKeyMask) target:self action:@selector(hotkeyWithEvent:object:) object:@"hello, world!"]) {
                                                                        ^~~~~~~~~~~~~~~~
                                                                        NSEventModifierFlagControl
    /Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/System/Library/Frameworks/AppKit.framework/Headers/NSEvent.h:178:35: note: 'NSControlKeyMask' has been explicitly marked deprecated here
    static const NSEventModifierFlags NSControlKeyMask            API_DEPRECATED_WITH_REPLACEMENT("NSEventModifierFlagControl", macos(10.0,10.12)) = NSEventModifierFlagControl;
                                      ^
    DDHotKeyAppDelegate.m:54:81: warning: 'NSAlternateKeyMask' is deprecated: first deprecated in macOS 10.12 [-Wdeprecated-declarations]
            if (![c registerHotKeyWithKeyCode:kVK_ANSI_V modifierFlags:(NSControlKeyMask | NSAlternateKeyMask) target:self action:@selector(hotkeyWithEvent:object:) object:@"hello, world!"]) {
                                                                                           ^~~~~~~~~~~~~~~~~~
                                                                                           NSEventModifierFlagOption
    /Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/System/Library/Frameworks/AppKit.framework/Headers/NSEvent.h:179:35: note: 'NSAlternateKeyMask' has been explicitly marked deprecated here
    static const NSEventModifierFlags NSAlternateKeyMask          API_DEPRECATED_WITH_REPLACEMENT("NSEventModifierFlagOption", macos(10.0,10.12)) = NSEventModifierFlagOption;
                                      ^
    DDHotKeyAppDelegate.m:72:62: warning: 'NSControlKeyMask' is deprecated: first deprecated in macOS 10.12 [-Wdeprecated-declarations]
            if (![c registerHotKeyWithKeyCode:kVK_ANSI_V modifierFlags:(NSControlKeyMask | NSAlternateKeyMask | NSCommandKeyMask) task:task]) {
                                                                        ^~~~~~~~~~~~~~~~
                                                                        NSEventModifierFlagControl
    /Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/System/Library/Frameworks/AppKit.framework/Headers/NSEvent.h:178:35: note: 'NSControlKeyMask' has been explicitly marked deprecated here
    static const NSEventModifierFlags NSControlKeyMask            API_DEPRECATED_WITH_REPLACEMENT("NSEventModifierFlagControl", macos(10.0,10.12)) = NSEventModifierFlagControl;
                                      ^
    DDHotKeyAppDelegate.m:72:81: warning: 'NSAlternateKeyMask' is deprecated: first deprecated in macOS 10.12 [-Wdeprecated-declarations]
            if (![c registerHotKeyWithKeyCode:kVK_ANSI_V modifierFlags:(NSControlKeyMask | NSAlternateKeyMask | NSCommandKeyMask) task:task]) {
                                                                                           ^~~~~~~~~~~~~~~~~~
                                                                                           NSEventModifierFlagOption
    /Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/System/Library/Frameworks/AppKit.framework/Headers/NSEvent.h:179:35: note: 'NSAlternateKeyMask' has been explicitly marked deprecated here
    static const NSEventModifierFlags NSAlternateKeyMask          API_DEPRECATED_WITH_REPLACEMENT("NSEventModifierFlagOption", macos(10.0,10.12)) = NSEventModifierFlagOption;
                                      ^
    DDHotKeyAppDelegate.m:72:102: warning: 'NSCommandKeyMask' is deprecated: first deprecated in macOS 10.12 [-Wdeprecated-declarations]
            if (![c registerHotKeyWithKeyCode:kVK_ANSI_V modifierFlags:(NSControlKeyMask | NSAlternateKeyMask | NSCommandKeyMask) task:task]) {
                                                                                                                ^~~~~~~~~~~~~~~~
                                                                                                                NSEventModifierFlagCommand
    /Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/System/Library/Frameworks/AppKit.framework/Headers/NSEvent.h:180:35: note: 'NSCommandKeyMask' has been explicitly marked deprecated here
    static const NSEventModifierFlags NSCommandKeyMask            API_DEPRECATED_WITH_REPLACEMENT("NSEventModifierFlagCommand", macos(10.0,10.12)) = NSEventModifierFlagCommand;
                                      ^
    DDHotKeyAppDelegate.m:85:58: warning: 'NSControlKeyMask' is deprecated: first deprecated in macOS 10.12 [-Wdeprecated-declarations]
            [c unregisterHotKeyWithKeyCode:kVK_ANSI_V modifierFlags:NSControlKeyMask];
                                                                    ^~~~~~~~~~~~~~~~
                                                                    NSEventModifierFlagControl
    /Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/System/Library/Frameworks/AppKit.framework/Headers/NSEvent.h:178:35: note: 'NSControlKeyMask' has been explicitly marked deprecated here
    static const NSEventModifierFlags NSControlKeyMask            API_DEPRECATED_WITH_REPLACEMENT("NSEventModifierFlagControl", macos(10.0,10.12)) = NSEventModifierFlagControl;
                                      ^
    DDHotKeyAppDelegate.m:91:59: warning: 'NSControlKeyMask' is deprecated: first deprecated in macOS 10.12 [-Wdeprecated-declarations]
            [c unregisterHotKeyWithKeyCode:kVK_ANSI_V modifierFlags:(NSControlKeyMask | NSAlternateKeyMask)];
                                                                     ^~~~~~~~~~~~~~~~
                                                                     NSEventModifierFlagControl
    /Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/System/Library/Frameworks/AppKit.framework/Headers/NSEvent.h:178:35: note: 'NSControlKeyMask' has been explicitly marked deprecated here
    static const NSEventModifierFlags NSControlKeyMask            API_DEPRECATED_WITH_REPLACEMENT("NSEventModifierFlagControl", macos(10.0,10.12)) = NSEventModifierFlagControl;
                                      ^
    DDHotKeyAppDelegate.m:91:78: warning: 'NSAlternateKeyMask' is deprecated: first deprecated in macOS 10.12 [-Wdeprecated-declarations]
            [c unregisterHotKeyWithKeyCode:kVK_ANSI_V modifierFlags:(NSControlKeyMask | NSAlternateKeyMask)];
                                                                                        ^~~~~~~~~~~~~~~~~~
                                                                                        NSEventModifierFlagOption
    /Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/System/Library/Frameworks/AppKit.framework/Headers/NSEvent.h:179:35: note: 'NSAlternateKeyMask' has been explicitly marked deprecated here
    static const NSEventModifierFlags NSAlternateKeyMask          API_DEPRECATED_WITH_REPLACEMENT("NSEventModifierFlagOption", macos(10.0,10.12)) = NSEventModifierFlagOption;
                                      ^
    DDHotKeyAppDelegate.m:97:59: warning: 'NSControlKeyMask' is deprecated: first deprecated in macOS 10.12 [-Wdeprecated-declarations]
            [c unregisterHotKeyWithKeyCode:kVK_ANSI_V modifierFlags:(NSControlKeyMask | NSAlternateKeyMask | NSCommandKeyMask)];
                                                                     ^~~~~~~~~~~~~~~~
                                                                     NSEventModifierFlagControl
    /Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/System/Library/Frameworks/AppKit.framework/Headers/NSEvent.h:178:35: note: 'NSControlKeyMask' has been explicitly marked deprecated here
    static const NSEventModifierFlags NSControlKeyMask            API_DEPRECATED_WITH_REPLACEMENT("NSEventModifierFlagControl", macos(10.0,10.12)) = NSEventModifierFlagControl;
                                      ^
    DDHotKeyAppDelegate.m:97:78: warning: 'NSAlternateKeyMask' is deprecated: first deprecated in macOS 10.12 [-Wdeprecated-declarations]
            [c unregisterHotKeyWithKeyCode:kVK_ANSI_V modifierFlags:(NSControlKeyMask | NSAlternateKeyMask | NSCommandKeyMask)];
                                                                                        ^~~~~~~~~~~~~~~~~~
                                                                                        NSEventModifierFlagOption
    /Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/System/Library/Frameworks/AppKit.framework/Headers/NSEvent.h:179:35: note: 'NSAlternateKeyMask' has been explicitly marked deprecated here
    static const NSEventModifierFlags NSAlternateKeyMask          API_DEPRECATED_WITH_REPLACEMENT("NSEventModifierFlagOption", macos(10.0,10.12)) = NSEventModifierFlagOption;
                                      ^
    DDHotKeyAppDelegate.m:97:99: warning: 'NSCommandKeyMask' is deprecated: first deprecated in macOS 10.12 [-Wdeprecated-declarations]
            [c unregisterHotKeyWithKeyCode:kVK_ANSI_V modifierFlags:(NSControlKeyMask | NSAlternateKeyMask | NSCommandKeyMask)];
                                                                                                             ^~~~~~~~~~~~~~~~
                                                                                                             NSEventModifierFlagCommand
    /Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/System/Library/Frameworks/AppKit.framework/Headers/NSEvent.h:180:35: note: 'NSCommandKeyMask' has been explicitly marked deprecated here
    static const NSEventModifierFlags NSCommandKeyMask            API_DEPRECATED_WITH_REPLACEMENT("NSEventModifierFlagCommand", macos(10.0,10.12)) = NSEventModifierFlagCommand;
                                      ^
    12 warnings generated.
    mv *.o
    clang -x objective-c \
        -fobjc-arc \
        -c \
        DDHotKeyCenter.m
    DDHotKeyCenter.m:68:27: warning: 'NSControlKeyMask' is deprecated: first deprecated in macOS 10.12 [-Wdeprecated-declarations]
        if ((_modifierFlags & NSControlKeyMask) > 0) { [bits addObject:@"NSControlKeyMask"]; }
                              ^~~~~~~~~~~~~~~~
                              NSEventModifierFlagControl
    /Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/System/Library/Frameworks/AppKit.framework/Headers/NSEvent.h:178:35: note: 'NSControlKeyMask' has been explicitly marked deprecated here
    static const NSEventModifierFlags NSControlKeyMask            API_DEPRECATED_WITH_REPLACEMENT("NSEventModifierFlagControl", macos(10.0,10.12)) = NSEventModifierFlagControl;
                                      ^
    DDHotKeyCenter.m:69:27: warning: 'NSCommandKeyMask' is deprecated: first deprecated in macOS 10.12 [-Wdeprecated-declarations]
        if ((_modifierFlags & NSCommandKeyMask) > 0) { [bits addObject:@"NSCommandKeyMask"]; }
                              ^~~~~~~~~~~~~~~~
                              NSEventModifierFlagCommand
    /Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/System/Library/Frameworks/AppKit.framework/Headers/NSEvent.h:180:35: note: 'NSCommandKeyMask' has been explicitly marked deprecated here
    static const NSEventModifierFlags NSCommandKeyMask            API_DEPRECATED_WITH_REPLACEMENT("NSEventModifierFlagCommand", macos(10.0,10.12)) = NSEventModifierFlagCommand;
                                      ^
    DDHotKeyCenter.m:70:27: warning: 'NSShiftKeyMask' is deprecated: first deprecated in macOS 10.12 [-Wdeprecated-declarations]
        if ((_modifierFlags & NSShiftKeyMask) > 0) { [bits addObject:@"NSShiftKeyMask"]; }
                              ^~~~~~~~~~~~~~
                              NSEventModifierFlagShift
    /Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/System/Library/Frameworks/AppKit.framework/Headers/NSEvent.h:177:35: note: 'NSShiftKeyMask' has been explicitly marked deprecated here
    static const NSEventModifierFlags NSShiftKeyMask              API_DEPRECATED_WITH_REPLACEMENT("NSEventModifierFlagShift", macos(10.0,10.12)) = NSEventModifierFlagShift;
                                      ^
    DDHotKeyCenter.m:71:27: warning: 'NSAlternateKeyMask' is deprecated: first deprecated in macOS 10.12 [-Wdeprecated-declarations]
        if ((_modifierFlags & NSAlternateKeyMask) > 0) { [bits addObject:@"NSAlternateKeyMask"]; }
                              ^~~~~~~~~~~~~~~~~~
                              NSEventModifierFlagOption
    /Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/System/Library/Frameworks/AppKit.framework/Headers/NSEvent.h:179:35: note: 'NSAlternateKeyMask' has been explicitly marked deprecated here
    static const NSEventModifierFlags NSAlternateKeyMask          API_DEPRECATED_WITH_REPLACEMENT("NSEventModifierFlagOption", macos(10.0,10.12)) = NSEventModifierFlagOption;
                                      ^
    DDHotKeyCenter.m:188:85: warning: expression which evaluates to zero treated as a null pointer constant of type 'DDHotKey *' [-Wnon-literal-null-conversion]
        if ([self hasRegisteredHotKeyWithKeyCode:keyCode modifierFlags:flags]) { return NO; }
                                                                                        ^~
    /Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/usr/include/objc/objc.h:90:13: note: expanded from macro 'NO'
    #define NO  __objc_no
                ^~~~~~~~~
    DDHotKeyCenter.m:200:85: warning: expression which evaluates to zero treated as a null pointer constant of type 'DDHotKey *' [-Wnon-literal-null-conversion]
        if ([self hasRegisteredHotKeyWithKeyCode:keyCode modifierFlags:flags]) { return NO; }
                                                                                        ^~
    /Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/usr/include/objc/objc.h:90:13: note: expanded from macro 'NO'
    #define NO  __objc_no
                ^~~~~~~~~
    DDHotKeyCenter.m:269:55: warning: 'NSKeyUp' is deprecated: first deprecated in macOS 10.12 [-Wdeprecated-declarations]
            NSEvent *keyEvent = [NSEvent keyEventWithType:NSKeyUp
                                                          ^~~~~~~
                                                          NSEventTypeKeyUp
    /Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/System/Library/Frameworks/AppKit.framework/Headers/NSEvent.h:74:26: note: 'NSKeyUp' has been explicitly marked deprecated here
    static const NSEventType NSKeyUp                API_DEPRECATED_WITH_REPLACEMENT("NSEventTypeKeyUp", macos(10.0,10.12)) = NSEventTypeKeyUp;
                             ^
    7 warnings generated.
    mv *.o
    clang -x objective-c \
        -fobjc-arc \
        -c \
        DDHotKeyTextField.m
    DDHotKeyTextField.m:85:34: warning: 'NSCommandKeyMask' is deprecated: first deprecated in macOS 10.12 [-Wdeprecated-declarations]
        BOOL hasModifier = (flags & (NSCommandKeyMask | NSAlternateKeyMask | NSControlKeyMask | NSShiftKeyMask | NSFunctionKeyMask)) > 0;
                                     ^~~~~~~~~~~~~~~~
                                     NSEventModifierFlagCommand
    /Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/System/Library/Frameworks/AppKit.framework/Headers/NSEvent.h:180:35: note: 'NSCommandKeyMask' has been explicitly marked deprecated here
    static const NSEventModifierFlags NSCommandKeyMask            API_DEPRECATED_WITH_REPLACEMENT("NSEventModifierFlagCommand", macos(10.0,10.12)) = NSEventModifierFlagCommand;
                                      ^
    DDHotKeyTextField.m:85:53: warning: 'NSAlternateKeyMask' is deprecated: first deprecated in macOS 10.12 [-Wdeprecated-declarations]
        BOOL hasModifier = (flags & (NSCommandKeyMask | NSAlternateKeyMask | NSControlKeyMask | NSShiftKeyMask | NSFunctionKeyMask)) > 0;
                                                        ^~~~~~~~~~~~~~~~~~
                                                        NSEventModifierFlagOption
    /Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/System/Library/Frameworks/AppKit.framework/Headers/NSEvent.h:179:35: note: 'NSAlternateKeyMask' has been explicitly marked deprecated here
    static const NSEventModifierFlags NSAlternateKeyMask          API_DEPRECATED_WITH_REPLACEMENT("NSEventModifierFlagOption", macos(10.0,10.12)) = NSEventModifierFlagOption;
                                      ^
    DDHotKeyTextField.m:85:74: warning: 'NSControlKeyMask' is deprecated: first deprecated in macOS 10.12 [-Wdeprecated-declarations]
        BOOL hasModifier = (flags & (NSCommandKeyMask | NSAlternateKeyMask | NSControlKeyMask | NSShiftKeyMask | NSFunctionKeyMask)) > 0;
                                                                             ^~~~~~~~~~~~~~~~
                                                                             NSEventModifierFlagControl
    /Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/System/Library/Frameworks/AppKit.framework/Headers/NSEvent.h:178:35: note: 'NSControlKeyMask' has been explicitly marked deprecated here
    static const NSEventModifierFlags NSControlKeyMask            API_DEPRECATED_WITH_REPLACEMENT("NSEventModifierFlagControl", macos(10.0,10.12)) = NSEventModifierFlagControl;
                                      ^
    DDHotKeyTextField.m:85:93: warning: 'NSShiftKeyMask' is deprecated: first deprecated in macOS 10.12 [-Wdeprecated-declarations]
        BOOL hasModifier = (flags & (NSCommandKeyMask | NSAlternateKeyMask | NSControlKeyMask | NSShiftKeyMask | NSFunctionKeyMask)) > 0;
                                                                                                ^~~~~~~~~~~~~~
                                                                                                NSEventModifierFlagShift
    /Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/System/Library/Frameworks/AppKit.framework/Headers/NSEvent.h:177:35: note: 'NSShiftKeyMask' has been explicitly marked deprecated here
    static const NSEventModifierFlags NSShiftKeyMask              API_DEPRECATED_WITH_REPLACEMENT("NSEventModifierFlagShift", macos(10.0,10.12)) = NSEventModifierFlagShift;
                                      ^
    DDHotKeyTextField.m:85:110: warning: 'NSFunctionKeyMask' is deprecated: first deprecated in macOS 10.12 [-Wdeprecated-declarations]
        BOOL hasModifier = (flags & (NSCommandKeyMask | NSAlternateKeyMask | NSControlKeyMask | NSShiftKeyMask | NSFunctionKeyMask)) > 0;
                                                                                                                 ^~~~~~~~~~~~~~~~~
                                                                                                                 NSEventModifierFlagFunction
    /Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/System/Library/Frameworks/AppKit.framework/Headers/NSEvent.h:183:35: note: 'NSFunctionKeyMask' has been explicitly marked deprecated here
    static const NSEventModifierFlags NSFunctionKeyMask           API_DEPRECATED_WITH_REPLACEMENT("NSEventModifierFlagFunction", macos(10.0,10.12)) = NSEventModifierFlagFunction;
                                      ^
    DDHotKeyTextField.m:87:23: warning: 'NSKeyDown' is deprecated: first deprecated in macOS 10.12 [-Wdeprecated-declarations]
        if (event.type == NSKeyDown) {
                          ^~~~~~~~~
                          NSEventTypeKeyDown
    /Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/System/Library/Frameworks/AppKit.framework/Headers/NSEvent.h:73:26: note: 'NSKeyDown' has been explicitly marked deprecated here
    static const NSEventType NSKeyDown              API_DEPRECATED_WITH_REPLACEMENT("NSEventTypeKeyDown", macos(10.0,10.12)) = NSEventTypeKeyDown;
                             ^
    DDHotKeyTextField.m:105:24: warning: 'NSKeyDown' is deprecated: first deprecated in macOS 10.12 [-Wdeprecated-declarations]
        if ((event.type == NSKeyDown || (event.type == NSFlagsChanged && _hasSeenKeyDown == NO)) && hasModifier) {
                           ^~~~~~~~~
                           NSEventTypeKeyDown
    /Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/System/Library/Frameworks/AppKit.framework/Headers/NSEvent.h:73:26: note: 'NSKeyDown' has been explicitly marked deprecated here
    static const NSEventType NSKeyDown              API_DEPRECATED_WITH_REPLACEMENT("NSEventTypeKeyDown", macos(10.0,10.12)) = NSEventTypeKeyDown;
                             ^
    DDHotKeyTextField.m:105:52: warning: 'NSFlagsChanged' is deprecated: first deprecated in macOS 10.12 [-Wdeprecated-declarations]
        if ((event.type == NSKeyDown || (event.type == NSFlagsChanged && _hasSeenKeyDown == NO)) && hasModifier) {
                                                       ^~~~~~~~~~~~~~
                                                       NSEventTypeFlagsChanged
    /Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/System/Library/Frameworks/AppKit.framework/Headers/NSEvent.h:75:26: note: 'NSFlagsChanged' has been explicitly marked deprecated here
    static const NSEventType NSFlagsChanged         API_DEPRECATED_WITH_REPLACEMENT("NSEventTypeFlagsChanged", macos(10.0,10.12)) = NSEventTypeFlagsChanged;
                             ^
    DDHotKeyTextField.m:117:73: warning: 'NSKeyDownMask' is deprecated: first deprecated in macOS 10.12 [-Wdeprecated-declarations]
            _globalMonitor = [NSEvent addLocalMonitorForEventsMatchingMask:(NSKeyDownMask | NSFlagsChangedMask) handler:^NSEvent*(NSEvent *event){
                                                                            ^~~~~~~~~~~~~
                                                                            NSEventMaskKeyDown
    /Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/System/Library/Frameworks/AppKit.framework/Headers/NSEvent.h:143:26: note: 'NSKeyDownMask' has been explicitly marked deprecated here
    static const NSEventMask NSKeyDownMask                  API_DEPRECATED_WITH_REPLACEMENT("NSEventMaskKeyDown", macos(10.0,10.12)) = NSEventMaskKeyDown;
                             ^
    DDHotKeyTextField.m:117:89: warning: 'NSFlagsChangedMask' is deprecated: first deprecated in macOS 10.12 [-Wdeprecated-declarations]
            _globalMonitor = [NSEvent addLocalMonitorForEventsMatchingMask:(NSKeyDownMask | NSFlagsChangedMask) handler:^NSEvent*(NSEvent *event){
                                                                                            ^~~~~~~~~~~~~~~~~~
                                                                                            NSEventMaskFlagsChanged
    /Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/System/Library/Frameworks/AppKit.framework/Headers/NSEvent.h:145:26: note: 'NSFlagsChangedMask' has been explicitly marked deprecated here
    static const NSEventMask NSFlagsChangedMask             API_DEPRECATED_WITH_REPLACEMENT("NSEventMaskFlagsChanged", macos(10.0,10.12)) = NSEventMaskFlagsChanged;
                             ^
    10 warnings generated.
    mv *.o
    clang -x objective-c \
        -fobjc-arc \
        -c \
        DDHotKeyUtilities.m
    DDHotKeyUtilities.m:76:21: warning: 'NSControlKeyMask' is deprecated: first deprecated in macOS 10.12 [-Wdeprecated-declarations]
        if (modifiers & NSControlKeyMask) {
                        ^~~~~~~~~~~~~~~~
                        NSEventModifierFlagControl
    /Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/System/Library/Frameworks/AppKit.framework/Headers/NSEvent.h:178:35: note: 'NSControlKeyMask' has been explicitly marked deprecated here
    static const NSEventModifierFlags NSControlKeyMask            API_DEPRECATED_WITH_REPLACEMENT("NSEventModifierFlagControl", macos(10.0,10.12)) = NSEventModifierFlagControl;
                                      ^
    DDHotKeyUtilities.m:79:21: warning: 'NSAlternateKeyMask' is deprecated: first deprecated in macOS 10.12 [-Wdeprecated-declarations]
        if (modifiers & NSAlternateKeyMask) {
                        ^~~~~~~~~~~~~~~~~~
                        NSEventModifierFlagOption
    /Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/System/Library/Frameworks/AppKit.framework/Headers/NSEvent.h:179:35: note: 'NSAlternateKeyMask' has been explicitly marked deprecated here
    static const NSEventModifierFlags NSAlternateKeyMask          API_DEPRECATED_WITH_REPLACEMENT("NSEventModifierFlagOption", macos(10.0,10.12)) = NSEventModifierFlagOption;
                                      ^
    DDHotKeyUtilities.m:82:21: warning: 'NSShiftKeyMask' is deprecated: first deprecated in macOS 10.12 [-Wdeprecated-declarations]
        if (modifiers & NSShiftKeyMask) {
                        ^~~~~~~~~~~~~~
                        NSEventModifierFlagShift
    /Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/System/Library/Frameworks/AppKit.framework/Headers/NSEvent.h:177:35: note: 'NSShiftKeyMask' has been explicitly marked deprecated here
    static const NSEventModifierFlags NSShiftKeyMask              API_DEPRECATED_WITH_REPLACEMENT("NSEventModifierFlagShift", macos(10.0,10.12)) = NSEventModifierFlagShift;
                                      ^
    DDHotKeyUtilities.m:85:21: warning: 'NSCommandKeyMask' is deprecated: first deprecated in macOS 10.12 [-Wdeprecated-declarations]
        if (modifiers & NSCommandKeyMask) {
                        ^~~~~~~~~~~~~~~~
                        NSEventModifierFlagCommand
    /Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/System/Library/Frameworks/AppKit.framework/Headers/NSEvent.h:180:35: note: 'NSCommandKeyMask' has been explicitly marked deprecated here
    static const NSEventModifierFlags NSCommandKeyMask            API_DEPRECATED_WITH_REPLACEMENT("NSEventModifierFlagCommand", macos(10.0,10.12)) = NSEventModifierFlagCommand;
                                      ^
    DDHotKeyUtilities.m:138:18: warning: 'NSControlKeyMask' is deprecated: first deprecated in macOS 10.12 [-Wdeprecated-declarations]
        if ((flags & NSControlKeyMask) > 0) { newFlags |= controlKey; }
                     ^~~~~~~~~~~~~~~~
                     NSEventModifierFlagControl
    /Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/System/Library/Frameworks/AppKit.framework/Headers/NSEvent.h:178:35: note: 'NSControlKeyMask' has been explicitly marked deprecated here
    static const NSEventModifierFlags NSControlKeyMask            API_DEPRECATED_WITH_REPLACEMENT("NSEventModifierFlagControl", macos(10.0,10.12)) = NSEventModifierFlagControl;
                                      ^
    DDHotKeyUtilities.m:139:18: warning: 'NSCommandKeyMask' is deprecated: first deprecated in macOS 10.12 [-Wdeprecated-declarations]
        if ((flags & NSCommandKeyMask) > 0) { newFlags |= cmdKey; }
                     ^~~~~~~~~~~~~~~~
                     NSEventModifierFlagCommand
    /Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/System/Library/Frameworks/AppKit.framework/Headers/NSEvent.h:180:35: note: 'NSCommandKeyMask' has been explicitly marked deprecated here
    static const NSEventModifierFlags NSCommandKeyMask            API_DEPRECATED_WITH_REPLACEMENT("NSEventModifierFlagCommand", macos(10.0,10.12)) = NSEventModifierFlagCommand;
                                      ^
    DDHotKeyUtilities.m:140:18: warning: 'NSShiftKeyMask' is deprecated: first deprecated in macOS 10.12 [-Wdeprecated-declarations]
        if ((flags & NSShiftKeyMask) > 0) { newFlags |= shiftKey; }
                     ^~~~~~~~~~~~~~
                     NSEventModifierFlagShift
    /Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/System/Library/Frameworks/AppKit.framework/Headers/NSEvent.h:177:35: note: 'NSShiftKeyMask' has been explicitly marked deprecated here
    static const NSEventModifierFlags NSShiftKeyMask              API_DEPRECATED_WITH_REPLACEMENT("NSEventModifierFlagShift", macos(10.0,10.12)) = NSEventModifierFlagShift;
                                      ^
    DDHotKeyUtilities.m:141:18: warning: 'NSAlternateKeyMask' is deprecated: first deprecated in macOS 10.12 [-Wdeprecated-declarations]
        if ((flags & NSAlternateKeyMask) > 0) { newFlags |= optionKey; }
                     ^~~~~~~~~~~~~~~~~~
                     NSEventModifierFlagOption
    /Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/System/Library/Frameworks/AppKit.framework/Headers/NSEvent.h:179:35: note: 'NSAlternateKeyMask' has been explicitly marked deprecated here
    static const NSEventModifierFlags NSAlternateKeyMask          API_DEPRECATED_WITH_REPLACEMENT("NSEventModifierFlagOption", macos(10.0,10.12)) = NSEventModifierFlagOption;
                                      ^
    DDHotKeyUtilities.m:142:18: warning: 'NSAlphaShiftKeyMask' is deprecated: first deprecated in macOS 10.12 [-Wdeprecated-declarations]
        if ((flags & NSAlphaShiftKeyMask) > 0) { newFlags |= alphaLock; }
                     ^~~~~~~~~~~~~~~~~~~
                     NSEventModifierFlagCapsLock
    /Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/System/Library/Frameworks/AppKit.framework/Headers/NSEvent.h:176:35: note: 'NSAlphaShiftKeyMask' has been explicitly marked deprecated here
    static const NSEventModifierFlags NSAlphaShiftKeyMask         API_DEPRECATED_WITH_REPLACEMENT("NSEventModifierFlagCapsLock", macos(10.0,10.12)) = NSEventModifierFlagCapsLock;
                                      ^
    9 warnings generated.

5 files changed, 30 insertions, 0 deletions

diff --git a/Compatibility.h b/Compatibility.h
new file mode 100644
index 0000000..893e65d
--- /dev/null
+++ b/Compatibility.h
@@ -0,0 +1,22 @@
+#import <AppKit/AppKit.h>
+
+#if __MAC_OS_X_VERSION_MIN_REQUIRED >= 101300
+
+#define NSAlphaShiftKeyMask NSEventModifierFlagCapsLock
+#define NSShiftKeyMask NSEventModifierFlagShift
+#define NSControlKeyMask NSEventModifierFlagControl
+#define NSAlternateKeyMask NSEventModifierFlagOption
+#define NSCommandKeyMask NSEventModifierFlagCommand
+#define NSNumericPadKeyMask NSEventModifierFlagNumericPad
+#define NSHelpKeyMask NSEventModifierFlagHelp
+#define NSFunctionKeyMask NSEventModifierFlagFunction
+#define NSDeviceIndependentModifierFlagsMask NSEventModifierFlagDeviceIndependentFlagsMask
+
+#define NSFlagsChanged NSEventTypeFlagsChanged
+#define NSFlagsChangedMask NSEventMaskFlagsChanged
+
+#define NSKeyUp NSEventTypeKeyUp
+#define NSKeyDown NSEventTypeKeyDown
+#define NSKeyDownMask NSEventMaskKeyDown
+
+#endif
diff --git a/DDHotKeyAppDelegate.h b/DDHotKeyAppDelegate.h
index e6959d8..c4a139e 100644
--- a/DDHotKeyAppDelegate.h
+++ b/DDHotKeyAppDelegate.h
@@ -10,6 +10,8 @@
 
 #import <Cocoa/Cocoa.h>
 
+#import "Compatibility.h"
+
 @interface DDHotKeyAppDelegate : NSObject /*<NSApplicationDelegate>*/
 
 @property (assign) IBOutlet NSWindow *window;
diff --git a/DDHotKeyCenter.h b/DDHotKeyCenter.h
index 6f79bbb..7488b4b 100644
--- a/DDHotKeyCenter.h
+++ b/DDHotKeyCenter.h
@@ -10,6 +10,8 @@
 
 #import <Cocoa/Cocoa.h>
 
+#import "Compatibility.h"
+
 //a convenient typedef for the required signature of a hotkey block callback
 typedef void (^DDHotKeyTask)(NSEvent*);
 
diff --git a/DDHotKeyTextField.h b/DDHotKeyTextField.h
index c399d62..4898c08 100644
--- a/DDHotKeyTextField.h
+++ b/DDHotKeyTextField.h
@@ -11,6 +11,8 @@
 #import <Foundation/Foundation.h>
 #import "DDHotKeyCenter.h"
 
+#import "Compatibility.h"
+
 @interface DDHotKeyTextField : NSTextField
 
 @property (nonatomic, strong) DDHotKey *hotKey;
diff --git a/DDHotKeyUtilities.h b/DDHotKeyUtilities.h
index a42e772..a8429c6 100644
--- a/DDHotKeyUtilities.h
+++ b/DDHotKeyUtilities.h
@@ -10,5 +10,7 @@
 
 #import <Cocoa/Cocoa.h>
 
+#import "Compatibility.h"
+
 extern NSString *DDStringFromKeyCode(unsigned short keyCode, NSUInteger modifiers);
 extern UInt32 DDCarbonModifierFlagsFromCocoaModifiers(NSUInteger flags);