d3d11 0.3.0

Safe(r) bindings to the D3D11 API
Documentation 
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use d3d11_ffi::{core_supplemental::PWSTR, Direct3D11::ID3DUserDefinedAnnotation};

#[derive(Clone)]
pub struct UserDefinedAnnotation(pub(crate) ID3DUserDefinedAnnotation);
// impl_device_child!(UserDefinedAnnotation);

impl UserDefinedAnnotation {
    /// Returns the number of previous calls to BeginEvent that have not yet been finalized by calls to the UserDefinedAnnotation::end_event method.
    ///
    /// The return value is –1 if the calling application is not running under a Direct3D profiling tool.
    pub fn begin_event(&self, name: &str) -> i32 {
        let name_wide = name.encode_utf16().chain(Some(0)).collect::<Vec<_>>();
        let name_ptr = PWSTR::from_raw(name_wide.as_ptr() as _);
        unsafe { self.0.BeginEvent(name_ptr) }
    }

    /// Returns the number of previous calls to BeginEvent that have not yet been finalized by calls to the UserDefinedAnnotation::begin_event method.
    ///
    /// The return value is –1 if the calling application is not running under a Direct3D profiling tool.
    pub fn end_event(&self) -> i32 {
        unsafe { self.0.EndEvent() }
    }

    pub fn set_marker(&self, name: &str) {
        let name_wide = name.encode_utf16().chain(Some(0)).collect::<Vec<_>>();
        let name_ptr = PWSTR::from_raw(name_wide.as_ptr() as _);
        unsafe {
            self.0.SetMarker(name_ptr);
        }
    }
}