FunctionType 编辑

FunctionType represents C function.

Syntax

Returns a new CType object describing a C function.

CType FunctionType(
  abi,
  returnType[,
  argType1, ...]
);

Parameters

abi

The ABI type for the function; this is one of the ABI constants.

returnType

A CType indicating the type of the value returned by the function.

argType1... argTypeN

Zero or more CType objects indicating the types of each of the parameters passed into the C function.

Return value

A CType describing the function type. The equivalent C function type declaration would be:

returnType (*) ([argType1, ..., argTypeN]);

Exceptions thrown

TypeError

ABI is not a valid ABI constants, or returnType or any of the argument types are not valid CType objects.

Properties

Properties inherited from CType

These properties are available on all CType objects.

Method overview

Methods inherited from CType

FunctionType CData

FunctionType CData cannot be constructed. Function pointer is created with FunctionType.ptr.

CData functiontype.ptr([func]);

Parameters

func

A pointer value or JavaScript Function.

Return value

A CData representing the newly allocated function pointer.

Exceptions thrown

TypeError

func is not either pointer value or JavaScript Function.

See Also

• CType
• CData
• ABI
• Library
• Type conversion