dart:ffi library Null safety

Foreign Function Interface for interoperability with the C programming language.

NOTE: Dart:FFI is in beta, and breaking API changes might still happen.

Classes

Dart_CObject: Opaque, not exposing it's members.
DartRepresentationOf
Double: Represents a native 64 bit double in C. [...]
DynamicLibrary: Represents a dynamically loaded C library.
Float: Represents a native 32 bit float in C. [...]
Handle: Represents Dart_Handle in C. [...]
Int8: Represents a native signed 8 bit integer in C. [...]
Int16: Represents a native signed 16 bit integer in C. [...]
Int32: Represents a native signed 32 bit integer in C. [...]
Int64: Represents a native signed 64 bit integer in C. [...]
IntPtr: Represents a native pointer-sized integer in C. [...]
NativeApi: Utilities for accessing the Dart VM API from Dart code or from C code via dart_api_dl.h.
NativeFunction<T extends Function>: Represents a function type in C. [...]
NativeType: NativeType's subtypes represent a native type in C. [...]
Pointer<T extends NativeType>: Represents a pointer into the native C memory. Cannot be extended.
Struct: This class is extended to define structs. [...]
Uint8: Represents a native unsigned 8 bit integer in C. [...]
Uint16: Represents a native unsigned 16 bit integer in C. [...]
Uint32: Represents a native unsigned 32 bit integer in C. [...]
Uint64: Represents a native unsigned 64 bit integer in C. [...]
Unsized
Void: Represents a void type in C. [...]

DoublePointer: Extension on Pointer specialized for the type argument Double.
DynamicLibraryExtension: Methods which cannot be invoked dynamically.
FloatPointer: Extension on Pointer specialized for the type argument Float.
Int8Pointer: Extension on Pointer specialized for the type argument Int8.
Int16Pointer: Extension on Pointer specialized for the type argument Int16.
Int32Pointer: Extension on Pointer specialized for the type argument Int32.
Int64Pointer: Extension on Pointer specialized for the type argument Int64.
IntPtrPointer: Extension on Pointer specialized for the type argument IntPtr.
NativeFunctionPointer: Extension on Pointer specialized for the type argument NativeFunction.
NativePort: Extension to retrieve the native Dart_Port from a SendPort.
PointerPointer: Extension on Pointer specialized for the type argument Pointer.
StructAddressOf: Extension on Struct specialized for it's subtypes.
StructPointer: Extension on Pointer specialized for the type argument Struct.
Uint8Pointer: Extension on Pointer specialized for the type argument Uint8.
Uint16Pointer: Extension on Pointer specialized for the type argument Uint16.
Uint32Pointer: Extension on Pointer specialized for the type argument Uint32.
Uint64Pointer: Extension on Pointer specialized for the type argument Uint64.

unsized → const Unsized: This NativeType does not have predefined size. [...]
const Unsized()

nullptr → Pointer<Never>: Represents a pointer into the native C memory corresponding to "NULL", e.g. a pointer with address 0.
final

sizeOf<T extends NativeType>() → int: Number of bytes used by native type T. [...]