https://msdn.microsoft.com/en-us/library/windows/desktop/dn469266(v=vs.85).aspx https://msdn.microsoft.com/en-us/library/windows/desktop/mt744321(v=vs.85).aspx !!!! http://stackoverflow.com/questions/41917279/do-child-windows-have-the-same-dpi-as-their-parents-in-a-per-monitor-aware-appli