dialog.showMessageBox 没有在 electron 中返回按钮索引 main.js

Question

我有一个消息框，当用户单击 dashboardWindow 上的 close（windows os 右上角的 X 按钮）

dashboardWindow.on("close", (event) => {
    event.preventDefault();
    console.log("before message box");
    dialog.showMessageBox(
      dashboardWindows,
      {
        message: "Test",
        buttons: ["Default Button", "Cancel Button"],
        defaultId: 0, // bound to buttons array
        cancelId: 1 // bound to buttons array
      },
      (response) => {
        if (response === 0) {
          // bound to buttons array
          console.log("Default button clicked.");
        } else if (response === 1) {
          // bound to buttons array
          console.log("Cancel button clicked.");
        }
      }
    );
    console.log("after message box");
  });
}

当我关闭ose dashboardWindow 时消息框打开，但我无法response === 0 工作。同样 console.log("after message box"); 已经运行即使没有点击按钮。我如何才能使响应起作用（return 消息框上的索引按钮）？

log on window close

Answer 1

请参阅关于 dialog.showMessageBox 的最新 API 文档：此方法 returns 一个 Promise 对象并且不再使用回调函数，就像它使用的一样直到 Electron v5.x.x.

Returns Promise<Object> - resolves with a promise containing the following properties:

response Number - The index of the clicked button.

checkboxChecked Boolean - The checked state of the checkbox if checkboxLabel was set. Otherwise false.

这应该可以工作（尽管在您的上下文中未经测试）：

dashboardWindow.on("close", (event) => {
    event.preventDefault();
    console.log("before message box");
    dialog.showMessageBox(
      dashboardWindows,
      {
        message: "Test",
        buttons: ["Default Button", "Cancel Button"],
        defaultId: 0, // bound to buttons array
        cancelId: 1 // bound to buttons array
      })
      .then(result => {
        if (result.response === 0) {
          // bound to buttons array
          console.log("Default button clicked.");
        } else if (result.response === 1) {
          // bound to buttons array
          console.log("Cancel button clicked.");
        }
      }
    );
    console.log("after message box");
  });

Answer 2

//BRFORE QUIT
mainWindow.on('close', (event) => {
    event.preventDefault(); 
    dialog.showMessageBox(mainWindow,{
        message: "Are you sure you want to Close?",
        type: "warning",
        buttons: ["Exit" ,"Cancel"],
        defaultId: 0,
        title: "Confirm Close",
        detail: "This will shutdown the application !!!"
    }
    ).then((res) => {
        console.log(res);
        if(res.response === 0){
            mainWindow.destroy();
        }
    });
});


//AFTER QUIT
mainWindow.on('closed', (event) => {
    app.quit();
    sqlModel.closeDB();
    console.log("done");
});

dialog.showMessageBox 没有在 electron 中返回按钮索引 main.js

dialog.showMessageBox not returning button index in electron main.js

javascript

callback

dialog

electron

messagebox