How to change font size for all controls in an application including a NavBar, Ribbon, Layout and XtraEdit Controls?

I'm trying to introduce a button on my ribbon bar of my main form in a WinForms application that changes the font size globally (increase font / decrease font). In my application I have a RibbonControl, a NavBarControl, a LayoutControl, and a bunch of XtraEdit controls.
These lines of code seem to do the trick for the RibbonControl and the NavBarControl:

C#
var f = DevExpress.Utils.AppearanceObject.DefaultFont;  
DevExpress.Utils.AppearanceObject.DefaultFont = new Font(f.FontFamily, f.Size + 1);  
LookAndFeelHelper.ForceDefaultLookAndFeelChanged();  

The XtraEdit Controls do not change in their font size.

And if I change the font size individually for each control using the following code:

C#
public void IncreaseFont()  
{  
     foreach (Control cntrl in lcLayout.Controls)  
     ChangeFontSize(cntrl, 1);  
}  

private void ChangeFontSize(Control cntrl, float value)  
{  
    if (cntrl.HasChildren)  
    {  
        foreach (Control child in cntrl.Controls)  
            ChangeFontSize(child, value);  
     }  
     else  
     {  
         var f = cntrl.Font;  
         cntrl.Font = new Font(f.FontFamily, f.Size + value);  
     }  
}  

Then they change back to the original font size when this line is called:

C#
LookAndFeelHelper.ForceDefaultLookAndFeelChanged();  

What is the best way to globally change font size for all controls? Thanks,
Dave