Question

I have created a custom web browser to integrate in to our software and loaded gmail. I am getting this message at the top of gmail:

It looks like you have enabled
Internet Explorer Compatibility View.

Gmail works best if you turn this off.
Learn how to do this.

1.Open the Tools menu and select Compatibility View Settings.

2.Select ‘google.com’ under ‘Websites you’ve added to Compatibility View’.

3.Click Remove.

Is there a way to prevent this message from coming up or to turn that option off? I don’t see that in the browser control as an option.

Thanks!

Answer 1

This can be changed by adding registry keys.

See the relevant post from IE blog:

http://blogs.msdn.com/b/ie/archive/2009/03/10/more-ie8-extensibility-improvements.aspx

Quoting parts of it:

We’ve made a few improvements to our
extensibility model in IE8 RC1 based
on feedback we’ve received both
internally and externally.

WebBrowser (WebOC) Rendering Mode
Changes

About a year ago, I posted an entry
talking about WebBrowser Control
Rendering Modes in IE8. You may recall
that applications using the WebBrowser
Control (also known as the WebOC, or
Trident hosts) can use a Feature
Control Key to select the default
rendering mode of webpages they load.

Since our release of IE8 Beta 1, we’ve
changed the name of the Feature
Control Key that is used to toggle
that behavior. The key was previously
called FEATURE_NATIVE_DOCUMENT_MODE.
IE8 now refers to it by the key
FEATURE_BROWSER_EMULATION, and the
values for both IE7 Standards Mode and
IE8 Standards Mode have changed.

For compatibility purposes, the
WebBrowser control will run in IE7
Standards Mode by default if no
Feature Control Key value is defined
for an application. To run a
WebBrowser control in IE8 Standards
Mode, use the following new value into
the registry:

[(HKEY_CURRENT_USER or
HKEY_LOCAL_MACHINE)\Software\Microsoft\Internet
Explorer\Main\FeatureControl\FEATURE_BROWSER_EMULATION]
“MyApplication.exe” = dword 8000 (Hex:
0x1F40)

To run in IE7 Standards Mode, use the
following registry value:

[(HKEY_CURRENT_USER or
HKEY_LOCAL_MACHINE)\Software\Microsoft\Internet
Explorer\Main\FeatureControl\FEATURE_BROWSER_EMULATION]
“MyApplication.exe” = dword 7000 (Hex:
0x1B58)

For IE8 RTM, we’ve added a new
“forced” IE8 Standards Mode value.
When an application opts into this
mode, the Web Browser control will use
the IE8 User-Agent string and Browser
Emulation mode strictly. It will also
ignore fallback features such as the
built-in Compatibility View list and
the user-generated Compatibility View
list when loading pages. To run in
“forced” IE8 Standards Mode, use the
following registry value:

[(HKEY_CURRENT_USER or
HKEY_LOCAL_MACHINE)\Software\Microsoft\Internet
Explorer\Main\FeatureControl\FEATURE_BROWSER_EMULATION]
“MyApplication.exe” = dword 8888 (Hex:
0x22B8)

In all of these examples,
“MyApplication.exe” refers to the name
of your application.