Gdk

---

Description:

Content:

Namespaces:

• Key

Interfaces:

• DevicePad - `GdkDevicePad` is an interface implemented by devices of type gdk_source_tablet_pad
• DragSurface - A `GdkDragSurface` is an interface for surfaces used during DND.
• Paintable - `GdkPaintable` is a simple interface used by GTK to represent content that can be painted.
• Popup - A `GdkPopup` is a surface that is attached to another surface.
• Toplevel - A `GdkToplevel` is a freestanding toplevel surface.

Classes:

• AppLaunchContext - `GdkAppLaunchContext` handles launching an application in a graphical context.
• ButtonEvent - An event related to a button on a pointer device.
• CairoContext - `GdkCairoContext` is an object representing the platform-specific draw context.
• Clipboard - The `GdkClipboard` object represents data shared between applications or inside an application.
• ContentDeserializer - A `GdkContentDeserializer` is used to deserialize content received via inter-application data transfers.
• ContentFormats - The `GdkContentFormats` structure is used to advertise and negotiate the format of content.
• ContentFormatsBuilder - A `GdkContentFormatsBuilder` is an auxiliary struct used to create new `GdkContentFormats`, and should not be kept around.
• ContentProvider - A `GdkContentProvider` is used to provide content for the clipboard or for drag-and-drop operations in a number of formats.
• ContentSerializer - A `GdkContentSerializer` is used to serialize content for inter-application data transfers.
• CrossingEvent - An event caused by a pointing device moving between surfaces.
• Cursor - `GdkCursor` is used to create and destroy cursors.
• DNDEvent - An event related to drag and drop operations.
• DeleteEvent - An event related to closing a top-level surface.
• Device - The `GdkDevice` object represents an input device, such as a keyboard, a mouse, or a touchpad.
• DeviceTool - A physical tool associated to a `GdkDevice`.
• Display - `GdkDisplay` objects are the GDK representation of a workstation.
• DisplayManager - A singleton object that offers notification when displays appear or disappear.
• Drag - The `GdkDrag` object represents the source of an ongoing DND operation.
• DrawContext - Base class for objects implementing different rendering methods.
• Drop - The `GdkDrop` object represents the target of an ongoing DND operation.
• Event - `GdkEvent`s are immutable data structures, created by GDK to represent windowing system events.
• EventSequence - `GdkEventSequence` is an opaque type representing a sequence of related touch events.
• FileList - An opaque type representing a list of files.
• FocusEvent - An event related to a keyboard focus change.
• FrameClock - A `GdkFrameClock` tells the application when to update and repaint a surface.
• FrameTimings - A `GdkFrameTimings` object holds timing information for a single frame of the application’s displays.
• GLContext - `GdkGLContext` is an object representing a platform-specific OpenGL draw context.
• GLTexture - A GdkTexture representing a GL texture object.
• GrabBrokenEvent - An event related to a broken windowing system grab.
• KeyEvent - An event related to a key-based device.
• MemoryTexture - A `GdkTexture` representing image data in memory.
• Monitor - `GdkMonitor` objects represent the individual outputs that are associated with a `GdkDisplay`.
• MotionEvent - An event related to a pointer or touch device motion.
• PadEvent - An event related to a pad-based device.
• PopupLayout - The `GdkPopupLayout` struct contains information that is necessary position a [iface@Gdk.
• ProximityEvent - An event related to the proximity of a tool to a device.
• ScrollEvent - An event related to a scrolling motion.
• Seat - The `GdkSeat` object represents a collection of input devices that belong to a user.
• Snapshot - Base type for snapshot operations.
• Surface - A `GdkSurface` is a rectangular region on the screen.
• Texture - `GdkTexture` is the basic element used to refer to pixel data.
• TextureDownloader - The `GdkTextureDownloader` is used to download the contents of a [class@Gdk.
• ToplevelLayout - The `GdkToplevelLayout` struct contains information that is necessary to present a sovereign window on screen.
• TouchEvent - An event related to a touch-based device.
• TouchpadEvent - An event related to a gesture on a touchpad device.
• VulkanContext - `GdkVulkanContext` is an object representing the platform-specific Vulkan draw context.

Structs:

• KeymapKey - A `GdkKeymapKey` is a hardware key that can be mapped to a keyval.
• RGBA - A `GdkRGBA` is used to represent a color, in a way that is compatible with cairo’s notion of color.
• Rectangle - A `GdkRectangle` data type for representing rectangles.
• TimeCoord - A `GdkTimeCoord` stores a single event in a motion history.
• ToplevelSize - The `GdkToplevelSize` struct contains information that is useful to compute the size of a toplevel.

Enums:

• AnchorHints - Positioning hints for aligning a surface relative to a rectangle.
• AxisFlags - Flags describing the current capabilities of a device/tool.
• AxisUse - Defines how device axes are interpreted by GTK.
• CrossingMode - Specifies the crossing mode for enter and leave events.
• DevicePadFeature - A pad feature.
• DeviceToolType - Indicates the specific type of tool being used being a tablet.
• DragAction - Used in `GdkDrop` and `GdkDrag` to indicate the actions that the destination can and should do with the dropped data.
• DragCancelReason - Used in `GdkDrag` to the reason of a cancelled DND operation.
• EventType - Specifies the type of the event.
• FrameClockPhase - Used to represent the different paint clock phases that can be requested.
• FullscreenMode - Indicates which monitor a surface should span over when in fullscreen mode.
• GLAPI - The list of the different APIs that GdkGLContext can potentially support.
• Gravity - Defines the reference point of a surface and is used in `GdkPopupLayout`.
• InputSource - An enumeration describing the type of an input device in general terms.
• KeyMatch - Describes how well an event matches a given keyval and modifiers.
• MemoryFormat - `GdkMemoryFormat` describes formats that image data can have in memory.
• ModifierType - Flags to indicate the state of modifier keys and mouse buttons in events.
• NotifyType - Specifies the kind of crossing for enter and leave events.
• PaintableFlags - Flags about a paintable object.
• ScrollDirection - Specifies the direction for scroll events.
• ScrollUnit - Specifies the unit of scroll deltas.
• SeatCapabilities - Flags describing the seat capabilities.
• SubpixelLayout - This enumeration describes how the red, green and blue components of physical pixels on an output device are laid out.
• SurfaceEdge - Determines a surface edge or corner.
• TitlebarGesture
• ToplevelState - Specifies the state of a toplevel surface.
• TouchpadGesturePhase - Specifies the current state of a touchpad gesture.

Error domains:

• GLError - Error enumeration for `GdkGLContext`.
• TextureError - Possible errors that can be returned by `GdkTexture` constructors.
• VulkanError - Error enumeration for `GdkVulkanContext`.

Constants:

• public const int ACTION_ALL
  Defines all possible DND actions.
• public const int BUTTON_MIDDLE
  The middle button.
• public const int BUTTON_PRIMARY
  The primary button.
• public const int BUTTON_SECONDARY
  The secondary button.
• public const int CURRENT_TIME
  Represents the current time, and can be used anywhere a time is expected.
• public const bool EVENT_PROPAGATE
  Use this macro as the return value for continuing the propagation of an event handler.
• public const bool EVENT_STOP
  Use this macro as the return value for stopping the propagation of an event handler.
• public const int MODIFIER_MASK
  A mask covering all entries in `GdkModifierType`.
• public const int PRIORITY_REDRAW
  This is the priority that the idle handler processing surface updates is given in the main loop.

Delegates:

• public delegate void ContentDeserializeFunc (ContentDeserializer deserializer)
  The type of a function that can be registered with content_register_deserializer.
• public delegate void ContentSerializeFunc (ContentSerializer serializer)
  The type of a function that can be registered with content_register_serializer.

Functions:

• public void cairo_draw_from_gl (Context cr, Surface surface, int source, int source_type, int buffer_scale, int x, int y, int width, int height)
  The main way to not draw GL content in GTK.
• public void cairo_rectangle (Context cr, Rectangle rectangle)
  Adds the given rectangle to the current path of cr.
• public void cairo_region (Context cr, Region region)
  Adds the given region to the current path of cr.
• public Region cairo_region_create_from_surface (Surface surface)
  Creates region that covers the area where the given surface is more than 50% opaque.
• public void cairo_set_source_pixbuf (Context cr, Pixbuf pixbuf, double pixbuf_x, double pixbuf_y)
  Sets the given pixbuf as the source pattern for cr.
• public void cairo_set_source_rgba (Context cr, RGBA rgba)
  Sets the specified `GdkRGBA` as the source color of cr.
• public async bool content_deserialize_async (InputStream stream, string mime_type, Type type, int io_priority, Cancellable? cancellable, out Value value) throws Error
  Read content from the given input stream and deserialize it, asynchronously.
• public ContentFormats? content_formats_parse (string string)
  Parses the given string into `GdkContentFormats` and returns the formats.
• public void content_register_deserializer (string mime_type, Type type, ContentDeserializeFunc deserialize, void* data, DestroyNotify notify)
  Registers a function to deserialize object of a given type.
• public void content_register_serializer (Type type, string mime_type, ContentSerializeFunc serialize, void* data, DestroyNotify notify)
  Registers a function to serialize objects of a given type.
• public async bool content_serialize_async (OutputStream stream, string mime_type, Value value, int io_priority, Cancellable? cancellable) throws Error
  Serialize content and write it to the given output stream, asynchronously.
• public bool drag_action_is_unique (DragAction action)
• public Quark gl_error_quark ()
• public unowned string? intern_mime_type (string string)
  Canonicalizes the given mime type and interns the result.
• public void keyval_convert_case (uint symbol, out uint lower, out uint upper)
  Obtains the upper- and lower-case versions of the keyval symbol .
• public uint keyval_from_name (string keyval_name)
  Converts a key name to a key value.
• public bool keyval_is_lower (uint keyval)
  Returns true if the given key value is in lower case.
• public bool keyval_is_upper (uint keyval)
  Returns true if the given key value is in upper case.
• public unowned string? keyval_name (uint keyval)
  Converts a key value into a symbolic name.
• public uint keyval_to_lower (uint keyval)
  Converts a key value to lower case, if applicable.
• public uint32 keyval_to_unicode (uint keyval)
  Convert from a GDK key symbol to the corresponding Unicode character.
• public uint keyval_to_upper (uint keyval)
  Converts a key value to upper case, if applicable.
• public Region pango_layout_get_clip_region (Layout layout, int x_origin, int y_origin, int[] index_ranges)
  Obtains a clip region which contains the areas where the given ranges of text would be drawn.
• public Pixbuf? pixbuf_get_from_surface (Surface surface, int src_x, int src_y, int width, int height)
  Transfers image data from a `cairo_surface_t` and converts it to a `GdkPixbuf`.
• public Pixbuf? pixbuf_get_from_texture (Texture texture)
  Creates a new pixbuf from texture.
• public void set_allowed_backends (string backends)
  Sets a list of backends that GDK should try to use.
• public Quark texture_error_quark ()
• public uint unicode_to_keyval (uint32 wc)
  Convert from a Unicode character to a key symbol.
• public Quark vulkan_error_quark ()