Hi Revathi,
Thank you for contacting Syncfusion Support.
At present there is no direct support for your requirement. So we have prepared work around to help you on this. By loading, RibbonControlAdv in Standard form. Please find the screenshot for the same from below:
Screenshot:
We have also attached the sample for your reference. Please find it from following location:
Note: This requirement achieved by setting the FormBorderStyle as None, so ControlBox button will be removed and TitleBar behavior does not respond user actions be performed. So we have to handle this manually. You can modify these window options in your application level.
Please try this solution and let us know if it is helpful.
Regards
Senthil