c# - WinAPI 调整大小会破坏 minwidth/minheight ......我该如何解决这个问题？

Question

我有一个无边框的 WPF 窗口。我已经使用 WinAPI 编写了调整大小/拖动功能，但它忽略了窗口的最小宽度和最小高度。如何执行这些值？

我的代码如下：

private void Resize(object sender, MouseButtonEventArgs e)
{
    String resizeHandle = (sender as System.Windows.Shapes.Rectangle).Name;

    ResizeDirection direction = 
            resizeHandle == "PART_RESIZEHANDLE_TOP" ? ResizeDirection.Top
          : resizeHandle == "PART_RESIZEHANDLE_BOTTOM" ? ResizeDirection.Bottom
          : resizeHandle == "PART_RESIZEHANDLE_LEFT" ? ResizeDirection.Left
          : resizeHandle == "PART_RESIZEHANDLE_RIGHT" ? ResizeDirection.Right
          : resizeHandle == "PART_RESIZEHANDLE_TOPLEFT" ? ResizeDirection.TopLeft
          : resizeHandle == "PART_RESIZEHANDLE_TOPRIGHT" ? ResizeDirection.TopRight
          : resizeHandle == "PART_RESIZEHANDLE_BOTTOMLEFT" ? ResizeDirection.BottomLeft
          : resizeHandle == "PART_RESIZEHANDLE_BOTTOMRIGHT" ? ResizeDirection.BottomRight 
          : 0;

    if (direction == ResizeDirection.Unknown)
        throw new ArgumentException();

    SendMessage(hwndSource.Handle, WM_SYSCOMMAND, (IntPtr)(61440 + direction), IntPtr.Zero);

}

[DllImport("user32.dll", CharSet = CharSet.Auto)]
private static extern IntPtr SendMessage(IntPtr hWnd, uint Msg, IntPtr wParam, IntPtr lParam);