IWebBrowser2的问题 [英] Problem with IWebBrowser2

问题描述

嗨代码项目社区，



通常我从来没有打扰过我的问题的互联网论坛，但我现在有点绝望。

所以这就是问题：



我有一个带有web浏览器控件的MFC应用程序。为此，我创建了一个新类，该类从必要的com接口派生，以满足所有需求。到目前为止，它或多或少的工作相当不错，我遇到的唯一问题是我无法缩放或改变html控件内的字体大小。



通常我查找了msdn文档并提出了这段代码片段（根据互联网上的普遍共识，它应该有效）：

Hi codeproject community,

normally I never bother an internet forum with my problems but I am kind of desperated right now.
So here''s the issue:

I have an MFC application with an webbrowser control in the gui contained. For this purpose I created a new class deriving from the necessary com interfaces to cope with all requirements. By now it more or less works pretty good, the only problem I''m still encountering is that I can''t zoom or rather alter the font size inside the html control.

As usually I looked up the msdn documentation and came up with this code snippet (which ought to work according to the general consensus on the internet):

VARIANT vFontSize;
VariantInit (&vFontSize);
V_VT(&vFontSize) = VT_I4;
V_I4(&vFontSize) = 4;   //arbitrary picked zoom value out of a possible range from 0 to 4
//m_pBrowser->ExecWB(OLECMDID_PRINT, OLECMDEXECOPT_DONTPROMPTUSER, &vFontSize, NULL);
//EDIT:
m_pBrowser->ExecWB(OLECMDID_ZOOM, OLECMDEXECOPT_DONTPROMPTUSER, &vFontSize, NULL);

但无论我尝试什么，显示的html内容都没有任何变化。



有人有想法吗？

But no matter what I try, there''s not any change of the displayed html content.

Anyone got an idea?

推荐答案

如果有人有兴趣，这就是我为解决这个问题所采取的措施：



由于通过调用带有相应参数的ExecWB函数来实现它的方法仍然不想工作，我做了一些有点难看的工作。



在OnDocumentComplete事件中，我只是调用Javascript为我做变焦的功能。 这本手册对我来说非常有帮助。再次感谢Khodakovsky先生。

If anybody is interested, here''s what I did to solve this:

Since the method to do it by calling the ExecWB function with the respective arguments still not want to work, I did a somewhat ugly work around.

On the OnDocumentComplete event, I simply call a Javascript function which does the zoom for me. This manual was of very big help for me. Thanks again Mr. Khodakovsky.

这篇关于IWebBrowser2的问题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IT屋！