RGtkObject: The base object of RGtk2
In RGtk2: R Bindings for Gtk 2.8.0 and Above

Description Usage Arguments Details Value Author(s)

RGtkObject identifies an external object as being owned by RGtk. Practically, it allows convenience operators to be specified for any external object.

## S3 method for class 'RGtkObject'
x[[field, where = parent.frame()]]
## S3 method for class 'RGtkObject'
x$member
## S3 method for class 'RGtkObject'
x == y

`x`	The `RGtkObject` to which the method or field belongs or the left hand of a comparison
`field`	The name of the field whose value will be retrieved
`member`	The name of the member (eg method) that will be retrieved
`y`	The right hand operand of a comparison
`where`	The environment in which to look for the field accessor function

The functions [[.RGtkObject and $.RGtkObject both expand to an RGtk function that accesses external objects. The [[ operator looks for a field from an external C structure by expanding objectOfClassName[[fieldName]] to classNameGetFieldName(). External "methods" are expanded by the $ operator to form classNameMethodName(objectOfClassName, ...) from the Java-like objectOfClassName$methodName(...). The long and short mechanisms give the same result, but the shortcut is obviously more convenient. If the method does not exist, $ will fall back to other types of members, like properties (for GObjects) and fields.

The == operator compares two RGtkObjects on the basis of their internal pointer value. This should rarely be useful for users.

A context-dependent value resulting from the specified API call.

Michael Lawrence

RGtk2 documentation built on Oct. 14, 2021, 5:08 p.m.