private static void SetWindowDpi(IntPtr hwnd, Window window, Int32Rect windowBounds)
{
var structure = RECT.FromInt32Rect(windowBounds);
var monitorDpiScale = GetMonitorDpiScale(windowBounds.X, windowBounds.Y);
var wParam = new IntPtr((int)monitorDpiScale.PixelsPerInchX | (int)monitorDpiScale.PixelsPerInchY << 16);
var num = Marshal.AllocCoTaskMem(Marshal.SizeOf(structure));
try
{
Marshal.StructureToPtr(structure, num, false);
NativeMethods.NativeMethods.SendMessage(hwnd, 736, wParam, num);
VisualTreeHelper.SetRootDpi(window, monitorDpiScale);
}
finally
{
Marshal.FreeCoTaskMem(num);
}
}