win32-def

win32-def

Definitions of Windows Date Types for node-ffi, node-ffi-napi

What can I do with this?

Write node-ffi or node-ffi-napi calling win32 native functions code by Typescript with Types support.

Installing

npm install win32-def

Usage

// struct usage by ref-struct
import * as Struct from 'ref-struct'
import { DStruct as DS } from 'win32-def'


// https://msdn.microsoft.com/en-us/library/windows/desktop/dd162805(v=vs.85).aspx
const point = new Struct(DS.POINT)()
point.x = 100
point.y = 200
console.log(point)

// OR with N-API
import * as ref from 'ref-napi'
import * as Struct from 'ref-struct-di'

const myStruct = Struct(ref)
const point = new myStruct(DS.POINT)()
point.x = 100
point.y = 200
console.log(point)

// Should output like below:
// { x: 100,
//   y: 200,
//   'ref.buffer': <Buffer@0x048BB9F8 64 00 00 00 c8 00 00 00>
// }

import * as ref from 'ref'
import { K } from 'win32-api'
import { FModel as FM, DTypes as W } from 'win32-def'


const knl32 = K.load()
const buf  = <FM.Buffer> Buffer.alloc(4)   // ← here the types

buf.writeInt32LE(12345, 0)

// const hInstance =<FM.Buffer> Buffer.alloc(process.arch === 'x64' ? 8 : 4);
const hInstance = <FM.Buffer> ref.alloc(W.HINSTANCE)    // W.HINSTANCE is 'int64*' under x64, 'int32*' under ia32
knl32.GetModuleHandleExW(0, null, hInstance)

Relevant

• Windows Api documentation
• Windows Data Types
• System Error Codes
• FFI doc

License

MIT

Languages

• English
• 中文

Changelog

22.5.1 (2024-06-28)

Note: Version bump only for package win32-api