https://forum.qt.io/topic/129927/how-to-customize-the-window-borders-when-using-qt-customizewindowhint
How to customize the Window borders when using Qt::CustomizeWindowHint | Qt Forum
Aug 31, 2021 - Hello, I'm trying to remove the default Windows titlebar from my window while still keeping the window borders. I've more or less achieved this using the fla...
how to customizethe window