javascript - 检测按键文件

Question

我正在使用 Electron 设备开发自己的计时器，我想知道如果没有第一个计划中的应用程序，是否有可能检测到按键。例如:我启动应用程序，打开另一个程序，例如discord，当我使用discord时，我可以启动计时器。

Answer 1

从此处的Electron文档中提取:
https://www.electronjs.org/docs/api/global-shortcut

Detect keyboard events when the application does not have keyboardfocus.

The globalShortcut module can register/unregister a global keyboardshortcut with the operating system so that you can customize theoperations for various shortcuts.

Note: The shortcut is global; it will work even if the app does nothave the keyboard focus. You should not use this module until theready event of the app module is emitted.

const { app, globalShortcut } = require('electron')

app.whenReady().then(() => {
  // Register a 'CommandOrControl+X' shortcut listener.
  const ret = globalShortcut.register('CommandOrControl+X', () => {
    console.log('CommandOrControl+X is pressed')
  })

  if (!ret) {
    console.log('registration failed')
  }

  // Check whether a shortcut is registered.
  console.log(globalShortcut.isRegistered('CommandOrControl+X'))
})

app.on('will-quit', () => {
  // Unregister a shortcut.
  globalShortcut.unregister('CommandOrControl+X')

  // Unregister all shortcuts.
  globalShortcut.unregisterAll()
})