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

问题描述

我正在VisualC ++ 10中使用ATL托管浏览器控件. 我的代码类似于以下示例: http://msdn.microsoft.com/zh-CN/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

区别是我有主窗口，然后子窗口托管了浏览器控件. 2分钟后，我必须关闭浏览器，完全杀死浏览器activeX，但是此子窗口应该还活着并执行其他操作.但是以某种方式，该浏览器控件仍然停留在该位置，我可以看到滚动条或其他内容.

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..

我也尝试过通过在现有子窗口中创建子窗口，然后在关闭浏览器时销毁该子窗口的子窗口，但仍然无法正常工作！

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!

这就是我要关闭的方式:

This is how I am closing:

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

关闭webbrowser控件时，访问冲突"有很多问题，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. 不建议任何以前建议的事件(在我的情况下为DWebBrowserEvents2).
2. 如果您已附加了单击事件，请按如下所示取消附加它们:_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，我有未处理的异常，OLECMDID_CLOSE已修复.
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()

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，它仅应用于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).

为什么要这么难?

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