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3.3 GType Constants and Operations

The (gi types) module provides these variables and procedures.

Variable: G_TYPE_NONE ¶

Variable: G_TYPE_CHAR ¶

Variable: G_TYPE_UCHAR ¶

Variable: G_TYPE_BOOLEAN ¶

Variable: G_TYPE_INT ¶

Variable: G_TYPE_UINT ¶

Variable: G_TYPE_INT64 ¶

Variable: G_TYPE_UINT64 ¶

Variable: G_TYPE_FLOAT ¶

Variable: G_TYPE_DOUBLE ¶

These variables hold the GType integer values for the fundamental types.

Variable: G_TYPE_ENUM ¶

Variable: G_TYPE_FLAGS ¶

Variable: G_TYPE_STRUCT ¶

Variable: G_TYPE_OBJECT ¶

These variables hold the GType integer values of the enum, flags, struct, and object base classes respectively.

Procedure: get-gtype object ¶

Given object, this procedure returns its GType as an integer. It returns #f if the object does not have a type registered in The GLib Dynamic Type System.

Procedure: gtype-get-scheme-type gtype ¶

Given gtype, a GType integer ID, this procedure will return the associated GOOPS class that holds instances of that type, of #f if there is no GOOPS class for that gtype.

Procedure: gtype-get-name gtype ¶

Given gtype of type <integer>, this procedure returns a string with GObject’s internal name for this type. This may differ slightly from the name that Guile-GI gives to the type.

Procedure: gtype-get-parent gtype ¶

Procedure: gtype-get-children gtype ¶

These procedures return the parent type and the child types of a specified gtype as GType integers.

Procedure: gtype-is-a? object type ¶

Returns #t of object is an instance of a type.