macos – I want to realize what I could do with CGPostKeyboardEvent by combining CGEventCreateKeyboardEvent and CGEventPost.

Question: Question:

I'm doing OSX programming and want to generate a key sequence for a keyboard shortcut like Control-F4 in my app, but using CGEventCreateKeyboardEvent and CGEventPost doesn't work either. It worked fine when I used CGPostKeyboardEvent to generate similar keystrokes. However, the CGPostKeyboardEvent has become deprecated, so I'm looking for another way.

CGPostKeyboardEvent((CGCharCode)0, (CGKeyCode)118/*F4*/, true); // worked

CGEventPost(kCGHIDEventTap, CGEventCreateKeyboardEvent(NULL, (CGKeyCode)118/*F4*/, true)); // doesn't work

I would appreciate it if you could tell me how to make it possible to execute keyboard shortcuts in an app like CGPostKeyboardEvent . It's not surprising that the ability to issue system-related keyboard shortcuts like this is the reason why CGPostKeyboardEvent has become deprecated …

Answer: Answer:

For example, I think you should do the following.

#import <Foundation/Foundation.h>
#import <Carbon/Carbon.h>

int main(int argc, const char * argv[]) {
    @autoreleasepool {
        CGEventSourceRef source = CGEventSourceCreate(kCGEventSourceStateHIDSystemState);

        CGEventRef f4 = CGEventCreateKeyboardEvent(source, kVK_F4, true);
        CGEventSetFlags(f4, kCGEventFlagMaskControl);
        CGEventTapLocation location = kCGHIDEventTap;

        CGEventPost(location, f4);

    return 0;
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