public static List <MonitorInfo> GetMonitors()
{
List <MonitorInfo> result = new List <MonitorInfo>();
MonitorEnumDelegate med = (IntPtr hMonitor, IntPtr hdcMonitor, ref RECT lprcMonitor, IntPtr dwData) =>
{
var minfo = GetMonitorInfo(hMonitor);
result.Add(minfo);
return(true);
};
Monitors.EnumDisplayMonitors(IntPtr.Zero, IntPtr.Zero, med, IntPtr.Zero);
return(result);
}
static void Window_LocationChanged(object sender, EventArgs e)
{
Window win = (Window)sender;
var info = Monitors.GetMonitorFromWindow(win, NotFoundOptions.DefaultToNearest);
if (win.MaxWidth != info.WorkingArea.Width || win.MaxHeight != info.WorkingArea.Height)
{
if (win.MaxWidth != double.PositiveInfinity && win.MaxHeight != double.PositiveInfinity)
{
SetJustChangedMonitor(win, DateTime.Now);
}
win.MaxWidth = info.WorkingArea.Width;
win.MaxHeight = info.WorkingArea.Height;
}
}
static MonitorInfo GetMonitorInfo(IntPtr hMonitor)
{
MONITORINFO mi = new MONITORINFO();
mi.size = (uint)Marshal.SizeOf(mi);
if (!Monitors.GetMonitorInfo(hMonitor, ref mi))
{
return(null);
}
return(new MonitorInfo
{
Handler = hMonitor,
IsPrimary = mi.flags != 0,
DisplayArea = mi.monitor.ToRect(),
WorkingArea = mi.work.ToRect(),
});
}
static void Window_SizeChanged(object sender, SizeChangedEventArgs e)
{
Window win = (Window)sender;
if (win.SizeToContent != SizeToContent.WidthAndHeight)
{
return;
}
if (!GetCenterOnSizedToContent(win))
{
return;
}
var dt = GetJustChangedMonitor(win);
if (dt.HasValue)
{
if (dt.Value.Add(TimeSpan.FromSeconds(1)) < DateTime.Now)
{
SetJustChangedMonitor(win, null);
}
else
{
return;
}
}
var info = Monitors.GetMonitorFromWindow(win, NotFoundOptions.DefaultToNearest);
if (info.WorkingArea.Contains(new Rect(win.Left, win.Top, e.NewSize.Width, e.NewSize.Height)))
{
return;
}
win.Left = info.WorkingArea.Left + (info.WorkingArea.Width / 2) - (e.NewSize.Width / 2);
win.Top = info.WorkingArea.Top + (info.WorkingArea.Height / 2) - (e.NewSize.Height / 2);
}