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Handler for a proxy with version >= 1.
constraint'a = [< `V1 ]
methodprivatevirtual on_destroy : [> `V1 ]t-> unit
Unbind from the subcompositor interface.
Informs the server that the client will not be using this protocol object anymore. This does not affect any other objects, wl_subsurface objects included.
Create a sub-surface interface for the given surface, and associate it with the given parent surface. This turns a plain wl_surface into a sub-surface.
The to-be sub-surface must not already have another role, and it must not have an existing wl_subsurface object. Otherwise a protocol error is raised.
Adding sub-surfaces to a parent is a double-buffered operation on the parent (see wl_surface.commit). The effect of adding a sub-surface becomes visible on the next time the state of the parent surface is applied.
This request modifies the behaviour of wl_surface.commit request on the sub-surface, see the documentation on wl_subsurface interface.