如何彻底销毁 WebBrowser 控件 [英] How to Cleanly Destroy WebBrowser Control

问题描述

我在 VisualC++10 中使用 ATL 来托管浏览器控件.我的代码类似于这个例子:http://msdn.microsoft.com/en-us/library/9d0714y1(v=vs.80).aspx

I am using ATL in VisualC++10 to host browser control. My code is similar to this example: http://msdn.microsoft.com/en-us/library/9d0714y1(v=vs.80).aspx

不同之处在于我有主窗口，然后子窗口托管浏览器控件.2 分钟后，我必须关闭浏览器完全杀死浏览器 activeX 但这个子窗口应该是活的并做其他事情.但是不知何故这个浏览器控件仍然保留在那里，我可以看到滚动条或其他东西..

Difference is I have main window and then child window hosts the browser control. After 2 minutes i have to close the browser completely kill the browser activeX but this child window should be alive and do something else. But somehow this browser control still stays there, i can either see scrollbars or something..

我也尝试通过为现有子窗口创建子窗口，然后在关闭浏览器时销毁子窗口 - 但仍然不起作用！

I have also tried by creating child window to an existing child window, and at the time of closing browser I then destroy this child of a child - but still it does not work!

这就是我关闭的方式:

CLOSE()
{
    m_spIWebBrowser2->Navigate(bstrURL, &vEmpty, &vEmpty, &vEmpty, &vEmpty);
    m_spIWebBrowser2->Stop();
    m_spIWebBrowser2->put_Visible(VARIANT_FALSE);
    m_spIWebBrowser2->Quit();
    DestroyWindow(m_wndChild.m_hWnd);
}

谢谢！

推荐答案

我在关闭浏览器控件时遇到了很多访问冲突"问题，这些是对我有用的步骤:

I had many problems with "access violation" when closing webbrowser control, these are the steps that worked for me:

1. 不建议任何先前建议的事件(在我的情况下为 DWebBrowserEvents2).
2. 如果您附加了点击事件，请像这样取消附加它们:_variant_t v;v.vt = VT_DISPATCH;v.pdispVal = 0;IHTMLDocument2->put_onclick(v);
3. IWebBrowser2->Stop()
4. IWebBrowser2->ExecWB(OLECMDID_CLOSE, OLECMDEXECOPT_DONTPROMPTUSER, 0, 0) - 通过 window.external.CloseWindow() 关闭浏览器窗口时，我遇到了未处理的异常，OLECMDID_CLOSE 修复了它.
5. IWebBrowser2->put_Visible(VARIANT_FALSE)
6. IWebBrowser2->Release()
7. IOleInPlaceObject->InPlaceDeactivate()
8. IOleInPlaceObject->Release()
9. IOleObject->DoVerb(OLEIVERB_HIDE, NULL, IOleClientSite, 0, windowHandle_, NULL)
10. IOleObject->关闭(OLECLOSE_NOSAVE)
11. OleSetContainedObject(IOleObject, FALSE)
12. IOleObject->SetClientSite(NULL)
13. CoDisconnectObject(IOleObject, 0)
14. IOleObject->Release()

1. Unadvise any previously advised events (DWebBrowserEvents2 in my case).
2. If you've attached click events unattach them like this: _variant_t v; v.vt = VT_DISPATCH; v.pdispVal = 0; IHTMLDocument2->put_onclick(v);
3. IWebBrowser2->Stop()
4. IWebBrowser2->ExecWB(OLECMDID_CLOSE, OLECMDEXECOPT_DONTPROMPTUSER, 0, 0) - when closing browser window through window.external.CloseWindow() I had unhandled exceptions and OLECMDID_CLOSE fixed it.
5. IWebBrowser2->put_Visible(VARIANT_FALSE)
6. IWebBrowser2->Release()
7. IOleInPlaceObject->InPlaceDeactivate()
8. IOleInPlaceObject->Release()
9. IOleObject->DoVerb(OLEIVERB_HIDE, NULL, IOleClientSite, 0, windowHandle_, NULL)
10. IOleObject->Close(OLECLOSE_NOSAVE)
11. OleSetContainedObject(IOleObject, FALSE)
12. IOleObject->SetClientSite(NULL)
13. CoDisconnectObject(IOleObject, 0)
14. IOleObject->Release()

IWebBrowser2->Quit() 不应为 WebBrowser 控件 (CLSID_WebBrowser) 调用，它仅适用于 Internet Explorer 对象 (CLSID_InternetExplorer).

IWebBrowser2->Quit() should not be called for WebBrowser control (CLSID_WebBrowser), it is intended only for Internet Explorer object (CLSID_InternetExplorer).

为什么一定要这么难?

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