ffi-napi调用dll

最新推荐文章于 2025-11-24 23:11:43 发布

原创最新推荐文章于 2025-11-24 23:11:43 发布 · 111 阅读

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#electron

const ffi = require("ffi-napi")
const path = require("path")

// 定义接口常量（来自文档）
const TX_TYPE_USB = 1
const TX_ALIGN_CENTER = 1
const TX_CUT = 12
const TX_CUT_FULL = 0
const TX_FEED = 10

const isDev = process.env.NODE_ENV === 'development';
const dllPath = isDev
    ? path.join(__dirname, '../../../resources')
    : path.join(process.resourcesPath);

const kernel32 = ffi.Library("kernel32", {
    'SetDllDirectoryA': ["bool", ["string"]]
})

kernel32.SetDllDirectoryA(dllPath);

const printer = ffi.Library("TxPrnMod.dll", {
    'TxOpenPrinter': ['bool', ['uint32', 'ulonglong']],
    'TxGetStatus': ['uint32', []],
    'TxGetStatus2': ['uint32', []],
    'TxClosePrinter': ['void', []],
    'TxInit': ['void', []],
    'TxOutputString': ['void', ['string']],
    'TxOutputStringLn': ['void', ['string']],
    'TxNewline': ['void', []],
    'TxPrintImage': ['bool', ['string']],
    'TxDoFunction': ['void', ['uint32', 'int', 'int']],
    'TxPrintBarcode': ['bool', ['uint32', 'string']],
    'TxSetupSerial': ['void', ['uint32']]
})

export const printTest = () => {
    if (!printer.TxOpenPrinter(TX_TYPE_USB, 0)) {
        console.error('打印机打开失败')
        return
    }
}