electron-vue 打开文件目录，打开文件夹，

1.打开父子模态创建，

<button @click="showModalHandler">父子模态窗口</button>

//renderer渲染器中主注册事件
showModalHandler() {
      ipcRenderer.send("child-down-modal");
    }

//主进程中触发事件
  /**
   * 父子模态窗口
   */
  let childDownModal;
  ipcMain.on('child-down-modal', () => {
    childDownModal = new BrowserWindow({
      parent: mainWindow,
      modal: true,
      show: false,
      width: 300,
      height: 300,
      resizable: false,
      backgroundColor: "#fff",
      frame: false,
      hasShadow: true,
      closable: true,
      webPreferences: {
        devTools: false
      }
    })
    childDownModal.once('ready-to-show', () => {
      childDownModal.show();
    })
    childDownModal.loadURL(winURL + '#/downloadModal')
  })
  //关闭模态窗口
  ipcMain.on('close-down-modal', () => {
    childDownModal.hide();
  })

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