GObject
  GAppLaunchContext
    GdkAppLaunchContext
  GdkClipboard
  GdkContentDeserializer
  GdkContentSerializer
  GdkCursor
  GdkDevice
  GdkDeviceTool
  GdkDisplay
  GdkDisplayManager
  GdkDragContext
  GdkEvent
  GdkFrameClock
  GdkDrawContext
    GdkGLContext
    GdkVulkanContext
  GdkTexture
    GdkGLTexture
    GdkMemoryTexture
  GdkKeymap
  GdkMonitor
  GdkSeat
  GdkSnapshot
  GdkSurface
  GdkContentProvider
GInterface
  GTypePlugin
  GAsyncResult
  GdkDevicePad
  GdkPaintable
  GInitable
  GAppInfo
GBoxed
  GValueArray
  GdkContentFormats
  GdkRGBA
  GdkRectangle
  CairoRectangleInt
