[MacOS] How to retrieve the window list and print all dict values

get-win.c

#include <Carbon/Carbon.h>

// compile with:
//  clang -framework carbon get-win.c -o get-win

int main(int argc, const char *argv[]) {
    CGWindowListOption options = kCGWindowListOptionOnScreenOnly | kCGWindowListExcludeDesktopElements;
    CFArrayRef windows = CGWindowListCopyWindowInfo(options, kCGNullWindowID);
    CFIndex count = CFArrayGetCount(windows);

    for (int i = 0; i < count; i++) {
        CFDictionaryRef windowDict = CFArrayGetValueAtIndex(windows, i);
        CFStringRef key = CFStringCreateWithCString(NULL, "kCGWindowOwnerName", kCFStringEncodingUTF8);
        const void *value = nil;

        if (CFDictionaryGetValueIfPresent(windowDict, key, &value) == 1) {
            const char *c_value = CFStringGetCStringPtr(value, kCFStringEncodingUTF8);
            if( c_value == NULL ) {
                // this is the very strange case, where a window owner name c_value is null, but `CFShow(value)`
                // yields a string, just without the regular quotation marks
                // like Finder vs "Finder"
                CFShow(value);
                CFShowStr(value);   // tells: This is an NSString, not CFString
            } else {
                printf("kCGWindowOwnerName = %s\n", c_value);
                printf("-- Details about the string:");
                CFShowStr(value);
                printf("-- End of Details\n\n");
            }
        }

        CFRelease(key);
        CFShow(windowDict);
    }
    CFRelease(windows);

    return 0;
}