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CellAreaContextRef Structure Reference
CellAreaContextRef
public struct CellAreaContextRef : CellAreaContextProtocol, GWeakCapturingStores geometrical information for a series of rows in a GtkCellArea
The GtkCellAreaContext object is created by a given GtkCellArea
implementation via its GtkCellAreaClass.create_context() virtual
method and is used to store cell sizes and alignments for a series of
GtkTreeModel rows that are requested and rendered in the same context.
GtkCellLayout widgets can create any number of contexts in which to
request and render groups of data rows. However, it’s important that the
same context which was used to request sizes for a given GtkTreeModel
row also be used for the same row when calling other GtkCellArea APIs
such as gtk_cell_area_render() and gtk_cell_area_event().
The CellAreaContextRef type acts as a lightweight Swift reference to an underlying GtkCellAreaContext instance.
It exposes methods that can operate on this data type through CellAreaContextProtocol conformance.
Use CellAreaContextRef only as an unowned reference to an existing GtkCellAreaContext instance.
-
Untyped pointer to the underlying `GtkCellAreaContext` instance.For type-safe access, use the generated, typed pointer
cell_area_context_ptrproperty instead.Declaration
Swift
public let ptr: UnsafeMutableRawPointer!
-
Designated initialiser from the underlying
Cdata typeDeclaration
Swift
@inlinable init(_ p: UnsafeMutablePointer<GtkCellAreaContext>) -
Designated initialiser from a constant pointer to the underlying
Cdata typeDeclaration
Swift
@inlinable init(_ p: UnsafePointer<GtkCellAreaContext>) -
Conditional initialiser from an optional pointer to the underlying
Cdata typeDeclaration
Swift
@inlinable init!(_ maybePointer: UnsafeMutablePointer<GtkCellAreaContext>?) -
Conditional initialiser from an optional, non-mutable pointer to the underlying
Cdata typeDeclaration
Swift
@inlinable init!(_ maybePointer: UnsafePointer<GtkCellAreaContext>?) -
Conditional initialiser from an optional
gpointerDeclaration
Swift
@inlinable init!(gpointer g: gpointer?) -
Conditional initialiser from an optional, non-mutable
gconstpointerDeclaration
Swift
@inlinable init!(gconstpointer g: gconstpointer?) -
Reference intialiser for a related type that implements
CellAreaContextProtocolDeclaration
Swift
@inlinable init<T>(_ other: T) where T : CellAreaContextProtocol -
This factory is syntactic sugar for setting weak pointers wrapped in
GWeak<T>Declaration
Swift
@inlinable static func unowned<T>(_ other: T) -> CellAreaContextRef where T : CellAreaContextProtocol -
Unsafe typed initialiser. Do not use unless you know the underlying data type the pointer points to conforms to
CellAreaContextProtocol.Declaration
Swift
@inlinable init<T>(cPointer: UnsafeMutablePointer<T>) -
Unsafe typed initialiser. Do not use unless you know the underlying data type the pointer points to conforms to
CellAreaContextProtocol.Declaration
Swift
@inlinable init<T>(constPointer: UnsafePointer<T>) -
Unsafe untyped initialiser. Do not use unless you know the underlying data type the pointer points to conforms to
CellAreaContextProtocol.Declaration
Swift
@inlinable init(mutating raw: UnsafeRawPointer) -
Unsafe untyped initialiser. Do not use unless you know the underlying data type the pointer points to conforms to
CellAreaContextProtocol.Declaration
Swift
@inlinable init(raw: UnsafeMutableRawPointer) -
Unsafe untyped initialiser. Do not use unless you know the underlying data type the pointer points to conforms to
CellAreaContextProtocol.Declaration
Swift
@inlinable init(opaquePointer: OpaquePointer)