Struct wayland_client::Proxy [−][src]
pub struct Proxy<I: Interface> { /* fields omitted */ }Expand description
An handle to a wayland proxy
This represents a wayland object instantiated in your client session. Several handles to the same object can exist at a given time, and cloning them won’t create a new protocol object, only clone the handle. The lifetime of the protocol object is not tied to the lifetime of these handles, but rather to sending or receiving destroying messages.
These handles are notably used to send requests to the server. To do this
you need to convert them to the corresponding Rust object (using .into())
and use methods on the Rust object.
This handle is the most conservative one: it can be sent between threads, but you cannot send any message that would create a new object using it. You must attach it to a event queue, that will host the newly created objects.
Implementations
Send a request creating an object through this object
Warning: This method is mostly intended to be used by code generated
by wayland-scanner, and you should probably never need to use it directly,
but rather use the appropriate methods on the Rust object.
This is the generic method to send requests.
Check if the object associated with this proxy is still alive
Will return false if the object has been destroyed.
If the object is not managed by this library (if it was created from a raw
pointer from some other library your program interfaces with), this will always
returns true.
Retrieve the interface version of this wayland object instance
Returns 0 on dead objects
Access the UserData associated to this object
Each wayland object has an associated UserData, that can store a payload of arbitrary type and is shared by all proxies of this object.
See UserData documentation for more details.
Check if the other proxy refers to the same underlying wayland object
You can also use the PartialEq implementation.
Attach this proxy to the event queue represented by this token
Once a proxy is attached, you can use it to send requests that create new objects. These new objects will be handled by the event queue represented by the provided token.
This does not impact the events received by this object, which are still handled by their original event queue.
Erase the actual type of this proxy
Attempt to recover the typed variant of an anonymous proxy
Check whether this proxy is managed by the library or not
See from_c_ptr for details.
NOTE: This method will panic if called while the use_system_lib feature is
not activated.
Get a raw pointer to the underlying wayland object
Retrieve a pointer to the object from the libwayland-client.so library.
You will mostly need it to interface with C libraries needing access
to wayland objects (to initialize an opengl context for example).
NOTE: This method will panic if called while the use_system_lib feature is
not activated.
Create a Proxy instance from a C pointer
Create a Proxy from a raw pointer to a wayland object from the
C library.
If the pointer was previously obtained by the c_ptr() method, this
constructs a new proxy for the same object just like the clone()
method would have.
If the object was created by some other C library you are interfacing
with, it will be created in an “unmanaged” state: wayland-client will
treat it as foreign, and as such most of the safeties will be absent.
Notably the lifetime of the object can’t be tracked, so the alive()
method will always return true and you are responsible of not using
an object past its destruction (as this would cause a protocol error).
You will also be unable to associate any user data value to this object.
In order to handle protocol races, invoking it with a NULL pointer will create an already-dead object.
NOTE: This method will panic if called while the use_system_lib feature is
not activated.
Safety
The provided pointer must point to a valid wayland object from libwayland-client
with the correct interface.
Trait Implementations
Performs the conversion.
Performs the conversion.
Performs the conversion.
Performs the conversion.
Performs the conversion.
Performs the conversion.
Performs the conversion.
Performs the conversion.
Performs the conversion.
Performs the conversion.
Performs the conversion.
Performs the conversion.
Auto Trait Implementations
impl<I> !RefUnwindSafe for Proxy<I>
impl<I> !UnwindSafe for Proxy<I>
Blanket Implementations
Mutably borrows from an owned value. Read more
Convert Box<dyn Trait> (where Trait: Downcast) to Box<dyn Any>. Box<dyn Any> can
then be further downcast into Box<ConcreteType> where ConcreteType implements Trait. Read more
Convert Rc<Trait> (where Trait: Downcast) to Rc<Any>. Rc<Any> can then be
further downcast into Rc<ConcreteType> where ConcreteType implements Trait. Read more
Convert &Trait (where Trait: Downcast) to &Any. This is needed since Rust cannot
generate &Any’s vtable from &Trait’s. Read more
Convert &mut Trait (where Trait: Downcast) to &Any. This is needed since Rust cannot
generate &mut Any’s vtable from &mut Trait’s. Read more