IPerChannelDbLevel

winapi_ui_automation::um::devicetopology

Struct IPerChannelDbLevel 

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#[repr(C)]
pub struct IPerChannelDbLevel {
    pub lpVtbl: *const IPerChannelDbLevelVtbl,
}

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§lpVtbl: *const IPerChannelDbLevelVtbl

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impl IPerChannelDbLevel

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pub unsafe fn GetChannelCount(&self, pcChannels: *mut UINT) -> HRESULT

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pub unsafe fn GetLevelRange( &self, nChannel: UINT, pfMinLevelDB: *mut c_float, pfMaxLevelDB: *mut c_float, pfStepping: *mut c_float, ) -> HRESULT

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pub unsafe fn GetLevel( &self, nChannel: UINT, pfLevelDB: *mut c_float, ) -> HRESULT

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pub unsafe fn SetLevel( &self, nChannel: UINT, fLevelDB: c_float, pguidEventContext: LPCGUID, ) -> HRESULT

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pub unsafe fn SetLevelUniform( &self, fLevelDB: c_float, pguidEventContext: LPCGUID, ) -> HRESULT

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pub unsafe fn SetLevelAllChannels( &self, aLevelsDB: *mut c_float, cChannels: ULONG, pguidEventContext: LPCGUID, ) -> HRESULT

Methods from Deref<Target = IUnknown>§

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pub unsafe fn QueryInterface( &self, riid: REFIID, ppvObject: *mut *mut c_void, ) -> HRESULT

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pub unsafe fn AddRef(&self) -> ULONG

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pub unsafe fn Release(&self) -> ULONG

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impl Deref for IPerChannelDbLevel

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type Target = IUnknown

The resulting type after dereferencing.
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fn deref(&self) -> &IUnknown

Dereferences the value.
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impl Interface for IPerChannelDbLevel

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fn uuidof() -> GUID

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impl<T> Any for T
where T: 'static + ?Sized,

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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

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impl<T> BorrowMut<T> for T
where T: ?Sized,

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fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T, U> Into<U> for T
where U: From<T>,

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fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<P, T> Receiver for P
where P: Deref<Target = T> + ?Sized, T: ?Sized,

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type Target = T

🔬This is a nightly-only experimental API. (arbitrary_self_types)
The target type on which the method may be called.
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impl<T, U> TryFrom<U> for T
where U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.