R: Internal Versions of the Foreign Function Interface

Foreign-internal {base} | R Documentation

## Internal Versions of the Foreign Function Interface

### Description

Internal versions of `.Call` and `.External`.

### Usage

        .Call.graphics(.NAME, ..., PACKAGE)
    .External.graphics(.NAME, ..., PACKAGE)
            .External2(.NAME, ..., PACKAGE)

### Arguments

`.NAME` | a character string giving the name of a C function or Fortran subroutine, or an object of class `"NativeSymbolInfo"`, `"RegisteredNativeSymbol"` or `"NativeSymbol"` referring to such a name.
`...` | arguments to be passed to the foreign function.
`PACKAGE` | see the corresponding argument of `.Call`.

### Details

The `.graphics` versions of `.Call` and `.External` are used when calling code which makes low-level graphics calls. They take additional steps to ensure that the device driver display lists are updated correctly.

`.External2` is an enhanced version of `.External` which passes additional information in more arguments.

`.Call.graphics` is used in package grid and `.External.graphics` and `.External2` are used in package `graphics`.

These are primitive functions.

### Value

An R object.

### See Also

`.Call`.

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