Trait IAllocator 

pub trait IAllocator: IUnknown {
    // Required methods
    unsafe fn alloc_bstr(&self, text: *const u16, len: u32) -> BSTR;
    unsafe fn free_bstr(&self, bstr: BSTR);
    unsafe fn alloc(&self, len: usize) -> *mut c_void;
    unsafe fn free(&self, ptr: *mut c_void);
}

Required Methods

unsafe fn alloc_bstr(&self, text: *const u16, len: u32) -> BSTR

Allocates a new BSTR based on an existing string value.

Arguments

• psz - A pointer to an existing wide character (16-bit) string.
• len - String length.

Safety

The function is safe to call as long as the psz is valid in relation to the given len. The returned value must be freed using BSTR aware free function, such as the free_bstr in this interface or the SysFreeString function on Windows.

unsafe fn free_bstr(&self, bstr: BSTR)

Frees a BSTR value.

Arguments

• bstr - Previously allocated BSTR value.

Safety

The function is safe as long as the bstr is a valid BSTR value.

unsafe fn alloc(&self, len: usize) -> *mut c_void

Allocates a segment of memory that is safe to pass through intercom interfaces.

Arguments

• len - Size of data to allocate.

Safety

The returned value must be freed using the free method in this interface or the intercom alloc::free function.

unsafe fn free(&self, ptr: *mut c_void)

Frees a segment of memory received through intercom interfaces.

Arguments

• ptr - Memory to free.

Safety

The memory must have been allocated using the alloc method in this interface or the intercom alloc::allocate function.

Trait Implementations

impl ComClassInterface<dyn IAllocator, AutomationTypeSystem> for Allocator

fn offset() -> usize

unsafe fn get_box<'a>(vtable: RawComPtr) -> &'a mut ComBoxData<Self>

Safety

impl ComClassInterface<dyn IAllocator, RawTypeSystem> for Allocator

fn offset() -> usize

unsafe fn get_box<'a>(vtable: RawComPtr) -> &'a mut ComBoxData<Self>

Safety

impl ComInterface for dyn IAllocator

fn iid_ts<TS: TypeSystem>() -> &'static IID

where Self: ComInterfaceVariant<TS>,

Returns the IID of the requested interface.

type TSelf = dyn IAllocator

The current interface.

fn iid(ts: TypeSystemName) -> Option<&'static IID>

IID of the COM interface.

fn deref(com_itf: &ComItf<dyn IAllocator>) -> &(dyn IAllocator + 'static)

Dereferences a ComItf<T> into a &T.

impl ComInterfaceTypeInfo for dyn IAllocator

fn gather_type_info() -> Vec<TypeInfo>

impl<I, S> ComInterfaceVTableFor<I, S, AutomationTypeSystem> for dyn IAllocator

where I: ?Sized, S: ComClassInterface<I, AutomationTypeSystem> + ComClass + IAllocator,

const VTABLE: __IAllocatorAutomationVTable

impl<I, S> ComInterfaceVTableFor<I, S, RawTypeSystem> for dyn IAllocator

where I: ?Sized, S: ComClassInterface<I, RawTypeSystem> + ComClass + IAllocator,

const VTABLE: __IAllocatorRawVTable

impl ForeignType for dyn IAllocator

fn type_name() -> &'static str

The name of the type.

fn indirection_level() -> u32

impl HasInterface<dyn IAllocator> for Allocator

Implementors

impl IAllocator for Allocator

impl<I: ComInterface + IAllocator + ?Sized> IAllocator for ComItf<I>