how can implement the StretchHorizontally function in the ribbons?

Question

Dear All,

I would like to strecth horizontally the image of the ribbon (possibly also veritcally..). I found the virtual function StretchHorizontally() (http://msdn.microsoft.com/en-us/library/cc701788.aspx) but unfortunately I have no idea on what to write in the code. I assume I have to extend the CMFCRibbonButton class and implement the function, but what to do in it?

Many thanks and Best Regards,

pengCC