Hi Ebsan,
Thank you for contacting Syncfusion support.
We can enable the docking behavior by setting the "UseNativeChrome" property as True. The UseNativeChrome property allows the ChromelessWindow to behave like the MS Window. We have prepared a sample to demonstrate the same. Please find the sample in the following link.
Sample:
ChromelessWindow_118877.zipPlease let us know if you require further assistance on this.
Regards,
Bharadhi K