Golang 使用lxn/walk 创建固定窗口

MainWindow{
    ...
    AssignTO: main;
    ...
}

flag := win.GetWindowLong(main.Handle(), win.GWL_STYLE)
flag |= win.WS_OVERLAPPED         // always on top
flag &= ^win.WS_THICKFRAME        // fixed size
win.SetWindowLong(main.Handle(), win.GWL_STYLE, flag)
main.Run()