{"id":5695,"date":"2012-04-20T09:10:31","date_gmt":"2012-04-20T08:10:31","guid":{"rendered":"http:\/\/www.itwriting.com\/blog\/?p=5695"},"modified":"2012-04-20T09:10:31","modified_gmt":"2012-04-20T08:10:31","slug":"a-bug-in-embedded-internet-explorer-in-windows-8","status":"publish","type":"post","link":"https:\/\/www.itwriting.com\/blog\/5695-a-bug-in-embedded-internet-explorer-in-windows-8.html","title":{"rendered":"A bug in embedded Internet Explorer in Windows 8"},"content":{"rendered":"

Long-time readers of this site may remember that I did some work on embedding Internet Explorer, and its core rendering component MSHTML, in .NET applications. The code is still online<\/a>.<\/p>\n

I noticed that it does not work properly in Windows 8 Consumer Preview. Specifically, plain HTML works but you can no longer apply external CSS stylesheets. I reported the bug here<\/a> (sign-in required).  I did not use my own component, but rather the standard WebBrowser control. I have appended the code to reproduce the bug in case you cannot see the report.<\/p>\n

Microsoft has now responded as follows:<\/p>\n

\n

We were able to validate your feedback. However, based on the limited impact this bug may have, we will not be able to address this bug during this release.<\/p>\n<\/blockquote>\n

This status is also known as \u201cwon\u2019t fix\u201d and gives me pause for thought. How many other little bugs are there which Microsoft is not fixing, but which break a certain number of applications?<\/p>\n

If you are one of those few people using embedded IE in an application, I suggest checking Windows 8 compatibility now to avoid any unpleasant surprises.<\/p>\n

Perhaps it would be preferable to use WebKit or Gecko (Mozilla) rather than IE in any case. There is a thread on stackoverflow that discusses some options<\/a>. OpenWebKitSharp<\/a> looks promising.<\/p>\n

Code to reproduce the bug:<\/h3>\n
\n

Create a Windows Forms application in C# in VS 11. Add a Webbrowser control and two buttons, and an OpenFileDialog control. Also add a reference to the COM library Microsoft HTML Object Library.<\/p>\n

Here is the code for the first button that loads some HTML:<\/p>\n

string sHTML = "<html><head><title>Some title<\/title><\/head><body><p>Some text<\/p><\/body><\/html>";
this.webBrowser1.DocumentText = sHTML;<\/p>\n

Here is the code for the second button that applies a stylesheet:<\/p>\n

openFileDialog1.Filter = "CSS files|*.css";
if (openFileDialog1.ShowDialog() == DialogResult.OK)  {
mshtml.HTMLDocument doc = (mshtml.HTMLDocument)this.webBrowser1.Document.DomDocument;
doc.createStyleSheet(openFileDialog1.FileName);
}<\/p>\n

This is the stylesheet I am applying:<\/p>\n

body
{
    font-family: Arial;
    font-size: 18pt;
}<\/p>\n

To reproduce, run the application. Click the first button to load the HTML. Then click the second button to apply the stylesheet. In Windows 7 and earlier the stylesheet is applied. In Windows 8, the stylesheet is not applied.<\/p>\n<\/blockquote>\n

UPDATE<\/strong>: It seems this bug was fixed in Windows 8 RTM, despite the \u201cwill not fix\u201d designation. Good.<\/p>\n","protected":false},"excerpt":{"rendered":"

Long-time readers of this site may remember that I did some work on embedding Internet Explorer, and its core rendering component MSHTML, in .NET applications. The code is still online. I noticed that it does not work properly in Windows 8 Consumer Preview. Specifically, plain HTML works but you can no longer apply external CSS … Continue reading A bug in embedded Internet Explorer in Windows 8<\/span> →<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[44,55,67,80,97],"tags":[493,615,996],"class_list":["post-5695","post","type-post","status-publish","format-standard","hentry","category-internet","category-microsoft","category-professional","category-software-development","category-windows","tag-internet-explorer","tag-mshtml","tag-windows"],"_links":{"self":[{"href":"https:\/\/www.itwriting.com\/blog\/wp-json\/wp\/v2\/posts\/5695","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.itwriting.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.itwriting.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.itwriting.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.itwriting.com\/blog\/wp-json\/wp\/v2\/comments?post=5695"}],"version-history":[{"count":0,"href":"https:\/\/www.itwriting.com\/blog\/wp-json\/wp\/v2\/posts\/5695\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.itwriting.com\/blog\/wp-json\/wp\/v2\/media?parent=5695"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.itwriting.com\/blog\/wp-json\/wp\/v2\/categories?post=5695"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.itwriting.com\/blog\/wp-json\/wp\/v2\/tags?post=5695"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}