SharePoint 2010 html rich text editor styles menu in ribbon not showing up - sharepoint

Question

Guys i have a serious problem, like in the image below , the styles menu is not showing for html rich editor in sharepoint 2010, i included the *.css file and the PrefixStyleSheet
any help ? :(

Answer 1

Did yor read http://msdn.microsoft.com/en-us/library/ms551040.aspx and especially the first section which specifies how to set the PrefixStyleSheet-property of the RTE-control? If you then add css-classes with the specified stylesheet-prefix in your css, they should show up in the Styles or Markup Styles section depending on the context of the editing.
Have you done the above steps?
If you set PrefixStyleSheet to, for example "Test", your css should look like this to have a H1 show up in the Markup Styles section:
H1.TestElement-H1
{
-ms-name: "Heading 1";
}
and markup:
<PublishingWebControls:RichHtmlField id="Content" PrefixStyleSheet="Test" FieldName="PublishingPageContent" runat="server" />

Answer 2

Get a copy of corev4.css and do a search for ms-rte. Keep searching untill you get to a bit that looks like this:
H1.ms-rteElement-H1 {
-ms-name: "Heading 1"
}
.ms-rteElement-H1 {
FONT-SIZE: 2em; FONT-WEIGHT: normal
}
Use the supplied values to build your own styles and Markups.
Assuming your prefix is PrefixStyleSheet="myPrefex"
Markup Styles seem to require 2 css entries each. So if you wanted a markup style called "HEADING ONE!!!FTW" that was 2em bold you would have:
H1.myPrefexElement-H1 {
-ms-name: "HEADING ONE!!!FTW";
}
.myPrefexElement-H1 {
FONT-SIZE: 2em; FONT-WEIGHT: bold;
}
Markup styles are applied to existing HTML tags, so it appears the logic behind rolling your own is to overload the HTML tag with your own class name and give it a label, then flesh out your class with the actual css goodness.
Items in the STYLES drop down seem to only require a single line:
.myPrefexStyle-Bold {
-ms-name: "Bold Bits";
font-weight:bold;
}
But besure to include the -ms-name attribute as this determines the text that appears in the drop down (If you dont have this attribute you end up with blanks)
PS: Dont forget to include your own css stylesheet in the master or layout or page. I ended up putting in my master page with: <SharePoint:CssRegistration ID="CssRegistration2" Name="<% $SPUrl:~SiteCollection/Style Library/MyCustomMarkup.css %>" After="corev4.css" runat="server"/>
[offtopic]Ive only just started with sharepoint, but boy is it a dogs breakfast behind the scenes! The horror, the horror![/offtopic]

Answer 3

To use a custom style prefix you must set both PrefixStyleSheet and Stylesheet property:
<PublishingWebControls:RichHtmlField AllowFontsMenu="True" FieldName="Page Content" runat="server" PrefixStyleSheet="custom-rte" Stylesheet="<% $SPUrl:~sitecollection/Style Library/custom_rte.css %>"/>
Remember that doing this you will overwrite all dropdowns, colors and other options in RTE, so if you want to only change the Styles dropdown you still must to copy all the default rules.