Add support for the RadRibbonBars to have their items merged while in MDI mode.

IMPROVE. RadRibbonBar - add ability to theme the split button for this control (i.e. SplitButtonInRibbon)

FIX. RadRibbonForm prevents the Windows taskbar to show when taskbar AutoHide is on

According to the design guidelines, the width of a ContextualTab is determined by the sum of the widths of the RibbonTabs. However, there are cases where the width of the containing tabs is less than the width needed by the ContextualTab to display its text. To handle this case, we should allow the users to set the width of the ContextualTabs.

WORKAROUND: increase the size of the inner tabs:
 private void radButton1_Click(object sender, EventArgs e)
        {
            ribbonTab1.MinSize = new Size(ribbonTab1.Size.Width+60, 0);
            radRibbonBar1.RibbonBarElement.InvalidateMeasure(true);
            radRibbonBar1.RibbonBarElement.UpdateLayout();
            radRibbonBar1.RibbonBarElement.RibbonCaption.CaptionLayout.InvalidateMeasure(true);
            radRibbonBar1.RibbonBarElement.RibbonCaption.CaptionLayout.UpdateLayout();
        }

To reproroduce:
- open the smart tag and uncheck the ShowBorder check box.
- save, close and reopen the form

WORKAROUND: set the property in code
radRibbonBarButtonGroup1.ShowBorder = false;

Removing the minimize and maximize buttons when Windows aero effects are enabled is not possible neither through the form properties neither through the ribbon bar element.

To reproduce:

Add a RadRibbonBar to a Form. Add a RadTextBox to the bottom of the Form. Start the application, click the textbox and press the alt key. You will see that the focus will be taken away. This does not allow you to input key combinations into RadTextBox, such as Alt + 457.


Workaround:

Use the following custom RadRibbonBar:

public class MyRadRibbonBar : RadRibbonBar
{
    protected override ComponentInputBehavior CreateBehavior()
    {
        return new MyRibbonBarInputBehavior(this);
    }


    public override string ThemeClassName
    {
        get
        {
            return typeof(RadRibbonBar).FullName;
        }
        set
        {
        }
    }
}


class MyRibbonBarInputBehavior : RadRibbonBar.RibbonBarInputBehavior
{
    public MyRibbonBarInputBehavior(RadRibbonBar owner)
        : base(owner)
    {
    }


    protected override bool SetInternalKeyMapFocus()
    {
        if ((this.Owner as RadRibbonBar).ContainsFocus)
        {
            return base.SetInternalKeyMapFocus();
        }


        return false;
    }
}

Using VS2012 RadRibbonForm's caption element is misplaced. As a result a horizontal black line appears below the title. Additionally, the system borders of the form are thinner that they are supposed to be.

1. You need to have the Controls Suite installed
2. Add a new RadRibbonBarForm to the project using the add new item dialog
3. You will see that the RadRibbonBar that is within the RadRibbonBarForm has some glitches

The Click event is fired for another element instead for the element where the MouseDown event is fired in RadRibbonBar.

When Windows aero effects are enabled and the form width is being decreased, the title bar text appears over the title bar buttons and further more when continuing reducing the width of the form the buttons disappear and a small black rectangle is shown instead.

You have a scenario where there is a maximized MDI child form in a RadRibbonForm. You try to close the maximized child form from the MDI box of RadRibbonBar, but instead of getting the form closed, you programmatically hide it, so that you can reuse it further. The moment you try to show that form again, it appears non-maximized which is not a correct behavior.

Add support for MDI list menu item.  

The button that opens the BackstageView is not correctly placed when the ribbon is placed on a RadRibbonForm with aero turned on.

1. Change the theme to FluentDark using the dropdown located at the very top left of the app form (it should say Fluent as default). 
2. Select the Administration View ribbon group, located at the very left of the form ribbon
3. Select any option from the dropdown menu that appears 
You should see that the borders around the ribbon groups appear, and  once the mouse hovers over a collection is 'refreshes' them and the issue is then not repeatable for that group of buttons (even after another theme change). As mentioned in the previous ticket, this issue is only repeatable once per application launch

Steps to reproduce:

1. Add a RadRibbonBar to a form
2. Set it to be in Backstage mode
3. Add several items in the Backstage menu
4. Set their text to contain the & sign and set UseMnemonics to true on each menu item

Run the project and press Alt you will see that the letters preceded by an & are not underscored.

1. Create a new project with RadRibbonForm.
2. Set the ApplicationMenuStyle to BackstageView.
3. Add two buttons inside the backstage view. The first one should change the theme to Windows 7 and the second one to TelerikMetro.
4. Run the project and observe how application button position changes when changing the theme.

If the ribbon is collapsed and the user clicks a command tab to show the ribbon, and then uses Alt-Tab or another non-mouse method to switch to another application, the ribbon menu is 'stuck' and shows above all other windows. 
Switching back to the ribbon application and clicking will hide the ribbon. Using the mouse to click to another application does not have the same issue.

The new functionality should provide a way to apply an offset to the position of the key tip as well as customize their back and fore colors as well as the font