// 复制图片

ipcMain.on("copy",(event, arg) =>{

    const imagePath = path.join(appPath, `page/images/copyImg${arg.name}`)

    this.download(arg.url, imagePath, () => {

        const image = nativeImage.createFromPath(imagePath)

        const { width, height } = image.getSize()

        clipboard.writeImage(image, 'image')

    })

})

参考：https://github.com/electron/electron/issues/9351