CenterOnScreen has window visibility change side-effect

[riverar]

Wasn't expecting CenterOnScreen to make my window visible (usage of SWP_SHOWWINDOW parameter). Would recommend removing this and keeping window visibility state changes separate.

WinUIEx/src/WinUIEx/HwndExtensions.cs

Lines 100 to 117 in 24da8fd

	public static void CenterOnScreen(IntPtr hwnd, double? width = null, double? height = null)
	{
	var hwndDesktop = PInvoke.MonitorFromWindow(new(hwnd), MONITOR_FROM_FLAGS.MONITOR_DEFAULTTONEAREST);
	MONITORINFO info = new MONITORINFO();
	info.cbSize = 40;
	PInvoke.GetMonitorInfo(hwndDesktop, ref info);
	var dpi = PInvoke.GetDpiForWindow(new HWND(hwnd));
	PInvoke.GetWindowRect(new HWND(hwnd), out RECT windowRect);
	var scalingFactor = dpi / 96d;
	var w = width.HasValue ? (int)(width * scalingFactor) : windowRect.right - windowRect.left;
	var h = height.HasValue ? (int)(height * scalingFactor) : windowRect.bottom - windowRect.top;
	var cx = (info.rcMonitor.left + info.rcMonitor.right) / 2;
	var cy = (info.rcMonitor.bottom + info.rcMonitor.top) / 2;
	var left = cx - (w / 2);
	var top = cy - (h / 2);
	SetWindowPosOrThrow(new HWND(hwnd), new HWND(), left, top, w, h, SET_WINDOW_POS_FLAGS.SWP_SHOWWINDOW);
	}

[riverar]

Nice like rice, thanks @dotMorten