DrawingContextRef

public struct DrawingContextRef : DrawingContextProtocol, GWeakCapturing

The DrawingContextRef type acts as a lightweight Swift reference to an underlying GdkDrawingContext instance. It exposes methods that can operate on this data type through DrawingContextProtocol conformance. Use DrawingContextRef only as an unowned reference to an existing GdkDrawingContext instance.

GdkDrawingContext is an object that represents the current drawing state of a GdkWindow.

It’s possible to use a GdkDrawingContext to draw on a GdkWindow via rendering API like Cairo or OpenGL.

A GdkDrawingContext can only be created by calling gdk_window_begin_draw_frame() and will be valid until a call to gdk_window_end_draw_frame().

GdkDrawingContext is available since GDK 3.22

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  • ptr 
    Untyped pointer to the underlying `GdkDrawingContext` instance.

    For type-safe access, use the generated, typed pointer drawing_context_ptr property instead.

    Declaration

    Swift

    public let ptr: UnsafeMutableRawPointer!
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DrawingContext Class

  • Designated initialiser from the underlying C data type

    Declaration

    Swift

    @inlinable
init(_ p: UnsafeMutablePointer<GdkDrawingContext>)
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  • Designated initialiser from a constant pointer to the underlying C data type

    Declaration

    Swift

    @inlinable
init(_ p: UnsafePointer<GdkDrawingContext>)
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  • Conditional initialiser from an optional pointer to the underlying C data type

    Declaration

    Swift

    @inlinable
init!(_ maybePointer: UnsafeMutablePointer<GdkDrawingContext>?)
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  • Conditional initialiser from an optional, non-mutable pointer to the underlying C data type

    Declaration

    Swift

    @inlinable
init!(_ maybePointer: UnsafePointer<GdkDrawingContext>?)
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  • Conditional initialiser from an optional gpointer

    Declaration

    Swift

    @inlinable
init!(gpointer g: gpointer?)
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  • Conditional initialiser from an optional, non-mutable gconstpointer

    Declaration

    Swift

    @inlinable
init!(gconstpointer g: gconstpointer?)
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  • Reference intialiser for a related type that implements DrawingContextProtocol

    Declaration

    Swift

    @inlinable
init<T>(_ other: T) where T : DrawingContextProtocol
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  • This factory is syntactic sugar for setting weak pointers wrapped in GWeak<T>

    Declaration

    Swift

    @inlinable
static func unowned<T>(_ other: T) -> DrawingContextRef where T : DrawingContextProtocol
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  • Unsafe typed initialiser. Do not use unless you know the underlying data type the pointer points to conforms to DrawingContextProtocol.

    Declaration

    Swift

    @inlinable
init<T>(cPointer: UnsafeMutablePointer<T>)
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  • Unsafe typed initialiser. Do not use unless you know the underlying data type the pointer points to conforms to DrawingContextProtocol.

    Declaration

    Swift

    @inlinable
init<T>(constPointer: UnsafePointer<T>)
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  • Unsafe untyped initialiser. Do not use unless you know the underlying data type the pointer points to conforms to DrawingContextProtocol.

    Declaration

    Swift

    @inlinable
init(mutating raw: UnsafeRawPointer)
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  • Unsafe untyped initialiser. Do not use unless you know the underlying data type the pointer points to conforms to DrawingContextProtocol.

    Declaration

    Swift

    @inlinable
init(raw: UnsafeMutableRawPointer)
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  • Unsafe untyped initialiser. Do not use unless you know the underlying data type the pointer points to conforms to DrawingContextProtocol.

    Declaration

    Swift

    @inlinable
init(opaquePointer: OpaquePointer)
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