winsafe 0.0.27

Windows API and GUI in safe, idiomatic Rust.
Documentation 
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#![allow(non_camel_case_types, non_snake_case)]

use crate::decl::*;
use crate::guard::*;
use crate::kernel::privs::*;
use crate::mf::vts::*;
use crate::ole::privs::*;
use crate::prelude::*;

impl gdi_mf_IMFVideoDisplayControl for IMFVideoDisplayControl {}

/// This trait is enabled with `gdi` and `mf` features, and provides methods
/// for [`IMFVideoDisplayControl`](crate::IMFVideoDisplayControl).
///
/// Prefer importing this trait through the prelude:
///
/// ```no_run
/// use winsafe::prelude::*;
/// ```
pub trait gdi_mf_IMFVideoDisplayControl: mf_IMFVideoDisplayControl {
	/// [`GetCurrentImage`](https://learn.microsoft.com/en-us/windows/win32/api/evr/nf-evr-imfvideodisplaycontrol-getcurrentimage)
	/// method.
	///
	/// Returns bitmap description, DIB bytes and time stamp.
	#[must_use]
	fn GetCurrentImage(&self) -> HrResult<(BITMAPINFOHEADER, Vec<u8>, i64)> {
		let mut bih = BITMAPINFOHEADER::default();
		let mut dib_ptr = std::ptr::null_mut::<u8>();
		let mut dib_sz = 0u32;
		let mut time_stamp = 0i64;

		HrRet(unsafe {
			(vt::<IMFVideoDisplayControlVT>(self).GetCurrentImage)(
				self.ptr(),
				pvoid(&mut bih),
				&mut dib_ptr,
				&mut dib_sz,
				&mut time_stamp,
			)
		})
		.to_hrresult()
		.map(|_| {
			let dib_vec = unsafe { std::slice::from_raw_parts(dib_ptr, dib_sz as _) }.to_vec();
			let _ = unsafe { CoTaskMemFreeGuard::new(dib_ptr as _, 0) };
			(bih, dib_vec, time_stamp)
		})
	}
}