win32-api/dist/util/winspool/GetPrinter.js

FFI definitions of windows win32 api for node-ffi

import { load } from '../../lib/winspool/index.js';
const funcName = 'GetPrinterW';
// type RetType = ReturnType<FnType>
// type ParamType = Parameters<FnType>
/**
 * @link https://learn.microsoft.com/zh-cn/windows/win32/printdocs/getprinter
 */
export async function GetPrinter(options) {
    const { hPrinter, Level, maxLength = 1024 } = options;
    const lib = load([funcName]);
    const pPrinter = {};
    const cbBuf = (maxLength + 1) * 2;
    const pcbNeeded = Buffer.alloc(8);
    const ret = await lib.GetPrinterW_Async(hPrinter, Level, pPrinter, cbBuf, pcbNeeded);
    const pcb = pcbNeeded.readUInt32LE();
    if (!ret) {
        if (pcb > maxLength) {
            throw new Error(`maxLength is too small, increase to value grater than ${pcb}`);
        }
        return null;
    }
    return pPrinter;
}
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