Safe Haskell	None
Language	Haskell98

Data.GI.Base.GType

Description

Basic GTypes.

Synopsis

newtype GType = GType {
- gtypeToCGType :: CGType
}
type CGType = Word64
gtypeName :: GType -> IO String
gtypeString :: GType
gtypePointer :: GType
gtypeInt :: GType
gtypeUInt :: GType
gtypeLong :: GType
gtypeULong :: GType
gtypeInt64 :: GType
gtypeUInt64 :: GType
gtypeFloat :: GType
gtypeDouble :: GType
gtypeBoolean :: GType
gtypeGType :: GType
gtypeStrv :: GType
gtypeBoxed :: GType
gtypeObject :: GType
gtypeVariant :: GType
gtypeByteArray :: GType
gtypeInvalid :: GType

Documentation

newtype GType Source #

A newtype for use on the haskell side.

Constructors

GType
Fields gtypeToCGType :: CGType

Instances

IsGValue GType Source #
Instance details Methods toGValue :: GType -> IO GValue Source # fromGValue :: GValue -> IO GType Source #

type CGType = Word64 Source #

A type identifier in the GLib type system. This is the low-level type associated with the representation in memory, when using this on the Haskell side use GType below.

gtypeName :: GType -> IO String Source #

Get the name assigned to the given GType.

gtypeString :: GType Source #

Note: compile-time vs run-time GTypes

Notice that there are two types of GType's: the fundamental ones, which are created with G_TYPE_MAKE_FUNDAMENTAL(n) and always have the same runtime representation, and the ones that are registered in the GObject type system at runtime, and whose CGType may change for each program run (and generally does).

For the first type it is safe to use hsc to read the numerical values of the CGType at compile type, but for the second type it is essential to call the corresponding _get_type() function at runtime, and not use the value of the corresponding "constant" at compile time via hsc.

GType of strings.

gtypePointer :: GType Source #

GType of pointers.

gtypeInt :: GType Source #

GType for signed integers (gint or gint32).

gtypeUInt :: GType Source #

GType for unsigned integers (guint or guint32).

gtypeLong :: GType Source #

GType for glong.

gtypeULong :: GType Source #

GType for gulong.

gtypeInt64 :: GType Source #