如何避免嵌入式iframe元素的OnDocumentComplete事件？

问题描述

我想防止 iframe 元素每次触发 OnDocumentComplete 事件。例如，页面有4个iframe，当我加载此页面时，我的 OnDocumentComplete 事件运行4次。我想为每个页面运行一次 OnDocumentComplete 。我可以这样做吗？

I want to prevent iframe elements from triggering the OnDocumentComplete event every time. For example, a page has 4 iframes, and when I load this page, my OnDocumentComplete event runs 4 times. I want to run OnDocumentComplete just once for every page. How can I do that?

也许我可以删除或阻止 iframe 在 TWebBrowser control。

Maybe I could remove or block iframes in TWebBrowser control.

推荐答案

事件被触发每个 FRAME / IFRAME 在主文档中。

如果您想忽略它们，请尝试以下操作：

The event OnDocumentComplete is fired for each FRAME/IFRAME in the main document.
If you want to ignore them try this:

procedure TForm1.WebBrowser1DocumentComplete(Sender: TObject;
  const pDisp: IDispatch; var URL: OleVariant);
begin
  // check that the event is raised for the top-level browser (not frames or iframes)
  if pDisp = TWebBrowser(Sender).ControlInterface then
  begin
    // do something nice...
  end;
end;

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来自Delphi文档：

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From Delphi Docs:

发件人是加载文档的Web浏览器。

Sender is the Web browser that is loading the document.

pDisp是顶级框架或浏览器的自动化界面。
加载没有框架的文档时，pDisp是
Web浏览器的界面。当加载具有多个帧的文档时，这是包含框架的
接口，除了最后一次
事件发生时，它是Web浏览器的接口。

pDisp is the Automation interface of the top-level frame or browser. When loading a document without frames, pDisp is the interface of the Web browser. When loading a document with multiple frames, this is the interface of the containing frame, except for the very last time the event occurs, when it is the interface of the Web browser.

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