Titlebar customize

[soldiereleven]

I want to delete the system title bar and rewrite a new one. So I set "ExtendsContentIntoTitleBar“ to true. However, it seems to be different from WinUI3. In WinUI3, a transparent drag band will be left and the system interact button will be left with the transparent background. In Uno platform, I only see a window without a title bar, and I can not move it or maximize it. I am looking for a way to add the button and the drag band, and it is better if I can use my own title bar instead of a system's like WinUI3. In a word, just how can I add the interact buttons and drag band, or if it is not supported, a transparent system title bar like WinUI3 is acceptable.

[soldiereleven]

Any help or suggestions will be appreciated. And forgive my poor English for it is not my native language.