internal void SetBorder(TBBorder value)
{
int _Pad(TBBorder b) => b >= TBBorder.Width2 && b <= TBBorder.Width4 ? (int)b - 1 : 0;
#if true
int pOld = _Pad(_tb._border), pNew = _Pad(value), pDif = pNew - pOld;
if (pDif != 0)
{
this.Padding = new Padding(pNew);
}
var w = this.Hwnd();
if (!w.Is0)
{
RECT r = w.ClientRectInScreen; r.Inflate(pDif, pDif); r.Normalize(false);
const WS mask = WS.CAPTION | WS.THICKFRAME | WS.SYSMENU;
WS s1 = w.Style, s2 = _BorderStyle(value);
if (s2 != (s1 & mask))
{
w.SetStyle((s1 & ~mask) | s2);
}
//preserve client size and position
Api.AdjustWindowRectEx(ref r, _BorderStyle(value), false, WS2.TOOLWINDOW);
w.MoveLL(r.left, r.top, r.Width, r.Height, Native.SWP.FRAMECHANGED);
}
#else //this simpler code does not preserve client size and position
int pOld = _Pad(_tb._border), pNew = _Pad(value);
if (pNew != pOld)
{
this.Padding = new Padding(pNew);
}
var w = this.Hwnd();
if (!w.Is0)
{
const WS mask = WS.CAPTION | WS.THICKFRAME | WS.SYSMENU;
WS s1 = w.Style, s2 = _BorderStyle(value);
if (s2 != (s1 & mask))
{
w.SetStyle((s1 & ~mask) | s2, updateNC: true, updateClient: true);
}
}
#endif
}
WS _BorderStyle(TBBorder b) => b switch
{
