From 7eca0e9bf13657379e0affcda1f63bfdd1beeb47 Mon Sep 17 00:00:00 2001
From: xianyi <thefangyi@gmail.com>
Date: Thu, 11 Dec 2025 15:16:38 +0800
Subject: [PATCH] =?UTF-8?q?=E4=BF=AE=E5=A4=8D=E5=8F=8C=E9=9D=A2=E6=89=93?=
 =?UTF-8?q?=E5=8D=B0?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 electron/main.js | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/electron/main.js b/electron/main.js
index 7bcde9f..3a64fe1 100644
--- a/electron/main.js
+++ b/electron/main.js
@@ -301,9 +301,11 @@ ipcMain.handle("print-pdf", async (event, pdfDataOrUrl, printOptions = {}) => {
     }
 
     const duplexMode = printOptions?.duplex;
+    // pdf-to-printer 使用 side 选项，而不是 duplex
+    // side 可选值: "simplex" | "duplex" | "duplexshort" | "duplexlong"
+    const sideOption = duplexMode ? "duplex" : "simplex";
     log.info(
-      `准备打印PDF: ${pdfFilePath}, 打印机: ${
-        targetPrinterName || "默认打印机"
+      `准备打印PDF: ${pdfFilePath}, 打印机: ${targetPrinterName || "默认打印机"
       }, 双面打印: ${duplexMode ? "是" : "否"}`
     );
 
@@ -311,7 +313,7 @@ ipcMain.handle("print-pdf", async (event, pdfDataOrUrl, printOptions = {}) => {
     const printOptions_ptp = {
       printer: targetPrinterName || undefined,
       silent: true, // 静默打印
-      duplex: duplexMode || false, // 双面打印选项
+      side: sideOption, // 双面打印选项
     };
 
     await ptp.print(pdfFilePath, printOptions_ptp);