windows-capture 2.0.1

Fastest Windows Screen Capture Library For Rust 🔥
Documentation 
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use windows::Win32::Foundation::S_FALSE;
use windows::Win32::System::Com::{CO_MTA_USAGE_COOKIE, CoDecrementMTAUsage, CoIncrementMTAUsage};
use windows::Win32::System::WinRT::{RO_INIT_MULTITHREADED, RoInitialize, RoUninitialize};

/// Panic safe wrapper around `CoIncrementMTAUsage`.
struct WinMTACookie {
    cookie: CO_MTA_USAGE_COOKIE,
}

impl WinMTACookie {
    /// Increments the current threads MTA usage.
    pub fn new() -> windows::core::Result<Self> {
        Ok(Self { cookie: unsafe { CoIncrementMTAUsage()? } })
    }
}

impl Drop for WinMTACookie {
    fn drop(&mut self) {
        let _ = unsafe { CoDecrementMTAUsage(self.cookie) };
    }
}

/// Panic safe wrapper for WinRT api initialization.
pub struct WinRT {
    _cookie: WinMTACookie,
}

impl WinRT {
    /// Initializes WinRT apis on the current thread.
    pub fn new() -> windows::core::Result<Self> {
        let cookie = WinMTACookie::new()?;

        if let Err(e) = unsafe { RoInitialize(RO_INIT_MULTITHREADED) }
            && e.code() != S_FALSE
        {
            return Err(e);
        }

        Ok(Self { _cookie: cookie })
    }
}

impl Drop for WinRT {
    fn drop(&mut self) {
        unsafe { RoUninitialize() };
    }
}