使用CEFbrowser&编译错误（C2440） VS2015

问题描述

有。我是CEFbrowser的新手。
我正在开发My CefBrowser的下载模型。
我写了一些代码，但是编译时出错。

there. I'm new to CEFbrowser.I'm developing the download model of My CefBrowser.I've written some code but error while compiling.

 class CefClient : public virtual CefBase {
 public:
  ///
  // Return the handler for download events. If no handler is returned downloads
  // will not be allowed.
  ///
  /*--cef()--*/
  virtual CefRefPtr<CefDownloadHandler> GetDownloadHandler(){
     return this;
  }

但是VS2015表示C2440：

But VS2015 says C2440:

"return":cannot convert from 'CefClient *const' to 'CefRefPtr<CefDownloadHandler>'

我是新来的。当我将退回此到返回空时，它会运行，但无法下载 。
我该怎么做才能解决这个问题？
谢谢！

I'm new. and when i change return this to return null it runs, but can't download.What can i do to solve this problem?Thank you!

推荐答案

您的 CefClient 必须从 CefDownloadHandler 继承，即类CefClient：公共虚拟CefBase，公共CefDownloadHandler ：

It looks like your CefClient has to inherit from CefDownloadHandler, i.e. class CefClient: public virtual CefBase, public CefDownloadHandler: CEF C++ Implementing download handler

一旦您从 CefDownloadHandler ，从 CefClient 的实例返回 this 将正确地作为 CefRefPtr< CefDownloadHandler> 。

Once you inherit from CefDownloadHandler, returning this from an instance of CefClient will fit correctly as a CefRefPtr<CefDownloadHandler>.

这篇关于使用CEFbrowser&amp;编译错误（C2440） VS2015的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！