在MFC对话框中嵌入web网页时事件失效问题

微澜-2024-02-26 16:14

2010-04-20 日志

在MFC对话框中嵌入web网页时，网页初始化中添加事件无效

javascript 复制代码

document.body.onkeydown = function ()
{
  //onkeydown="keydownbody()" 不能激发
  alert(event.keyCode);
  if(event.keyCode == 27)//VK_ESCAPE //String.fromcharcode('A');
  {
	if (external != null && external.map_is_full_screen() == 1)
	  {
		external.map_full_screen();
	  }
  }
}

原来主线程截断了消息

cpp 复制代码

BOOL CXXXXDlg::PreTranslateMessage(MSG* pMsg)
{
    // TODO: Add your specialized code here and/or call the base class
    if ((pMsg->message == WM_KEYDOWN)&&(pMsg->wParam == VK_ESCAPE))
    {
        m_pXXXManagerDlg->AreaMessage(pMsg);
        //if(m_hMapGWnd)::SendMessage(m_hMapGWnd,pMsg->message,pMsg->wParam,pMsg->lParam);
        //使用上面的语句又会被CXXXXDlg::PreTranslateMessage(MSG* pMsg)拦截，必须使用接口方法或者自定义消息。
        return TRUE;
    }
//...
    return CDialog::PreTranslateMessage(pMsg);
}