Question about how to list all running window app names [Code Review/Question]

[wsantos]

I'm working with Rust and Core Foundations and I'd like to know if the code looks right or if it has some flaws or if I can make it simpler

use core_foundation::base::{FromVoid, TCFType, TCFTypeRef, ToVoid};
use core_foundation::dictionary::{CFDictionary, CFDictionaryRef};
use core_foundation::string::CFString;
use core_graphics::window::{copy_window_info, kCGNullWindowID, kCGWindowListOptionAll};
fn main() {
    let windows_info = copy_window_info(kCGWindowListOptionAll, kCGNullWindowID).unwrap();
    for window_info in windows_info.get_all_values() {
        let key = CFString::from_static_string("kCGWindowName");

        let winfo_hash: CFDictionary =
            unsafe { TCFType::wrap_under_get_rule(window_info as CFDictionaryRef) };

        let window_name = winfo_hash.get(ToVoid::to_void(&key));

        let window_name: String =
            unsafe { CFString::from_void(window_name.as_void_ptr()).to_string() };

        println!("{:?}", window_name);
    }
}

Is that right? or do we have a "simpler" way of doing that? My goal is to take a screenshot of the window app if t matches some criteria

Thanks in advance.

[wsantos]

It's simpler if I declare the Dict Key and Value so I don't need to mess with pointers, I am still not sure about the usage of get_all_values and TCFType::wrap_under_get_rule

#[warn(unused_imports)]
use core_foundation::base::{CFType, TCFType};
use core_foundation::dictionary::{CFDictionary, CFDictionaryRef};
use core_foundation::string::CFString;
use core_graphics::window::{copy_window_info, kCGNullWindowID, kCGWindowListOptionAll};
fn main() {
    let windows_info = copy_window_info(kCGWindowListOptionAll, kCGNullWindowID).unwrap();
    for window_info in windows_info.get_all_values() {
        let key = CFString::from_static_string("kCGWindowName");

        let winfo_hash: CFDictionary<CFString, CFType> =
            unsafe { TCFType::wrap_under_get_rule(window_info as CFDictionaryRef) };

        let window_name = winfo_hash
            .get(key)
            .downcast::<CFString>()
            .unwrap()
            .to_string();

        println!("{:?}", window_name)
    }
}