Struct winsafe::guard::ReleaseDCGuard

pub struct ReleaseDCGuard<'a, H>
where
    H: user_Hwnd,
{ /* private fields */ }

Available on crate features kernel and user only.

RAII implementation for HDC which automatically calls ReleaseDC when the object goes out of scope.

Implementations

impl<'a, H> ReleaseDCGuard<'a, H>

where H: user_Hwnd,

pub const unsafe fn new(hwnd: &'a H, hdc: HDC) -> Self

Constructs the guard by taking ownership of the handles.

Safety

Be sure the handle must be freed with ReleaseDC at the end of scope.

pub fn leak(&mut self) -> HDC

Ejects the underlying handle, leaving a Handle::INVALID in its place.

Since the internal handle will be invalidated, the destructor will not run. It’s your responsability to run it, otherwise you’ll cause a resource leak.

Trait Implementations

impl<'a, H> Deref for ReleaseDCGuard<'a, H>

where H: user_Hwnd,

type Target = HDC

The resulting type after dereferencing.

fn deref(&self) -> &Self::Target

Dereferences the value.

impl<'a, H> DerefMut for ReleaseDCGuard<'a, H>

where H: user_Hwnd,

fn deref_mut(&mut self) -> &mut Self::Target

Mutably dereferences the value.

impl<'a, H> Drop for ReleaseDCGuard<'a, H>

where H: user_Hwnd,

fn drop(&mut self)

Executes the destructor for this type.