public static IList <MonitorInfo> GetMonitorList()
{
List <MonitorInfo> col = new List <MonitorInfo>();
NativeMethods.MonitorEnumProc testDelegate = new NativeMethods.MonitorEnumProc(
delegate(IntPtr hMonitor, IntPtr hdcMonitor, ref NativeMethods.Rect lprcMonitor, IntPtr dwData)
{
NativeMethods.MonitorInfo mi = new NativeMethods.MonitorInfo();
mi.size = (uint)Marshal.SizeOf(mi);
bool success = NativeMethods.GetMonitorInfo(hMonitor, ref mi);
if (success)
{
MonitorInfo di = new MonitorInfo();
di.ScreenWidth = (mi.monitor.Right - mi.monitor.Left);
di.ScreenHeight = (mi.monitor.Bottom - mi.monitor.Top);
di.MonitorArea = mi.monitor;
di.WorkArea = mi.work;
di.Availability = mi.flags.ToString();
col.Add(di);
}
return(true);
});
NativeMethods.EnumDisplayMonitors(IntPtr.Zero, IntPtr.Zero, testDelegate, IntPtr.Zero);
return(col.AsReadOnly());
}
// ***** Static methods *****
/// <summary>
/// Returns a list of connected monitors
/// </summary>
/// <returns></returns>
public static IEnumerable <Monitor> GetAllMonitors()
{
var monitors = new List <Monitor>();
var proc = new NativeMethods.MonitorEnumProc((monPtr, hdc, lprc, lparam) => {
monitors.Add(new Monitor(monPtr));
return(true);
});
_ = NativeMethods.EnumDisplayMonitors(IntPtr.Zero, IntPtr.Zero, proc, IntPtr.Zero);
return(monitors);
}
/// <summary>Returns a read-only collection containing the handle (HMONITOR) of all connected monitors.</summary>
/// <returns>Returns a read-only collection containing the handle (HMONITOR) of all connected monitors.</returns>
unsafe private static ReadOnlyCollection <IntPtr> GetMonitorHandles()
{
var handles = new List <IntPtr>(1);
var callback = new NativeMethods.MonitorEnumProc(
(IntPtr monitorHandle, IntPtr deviceContextHandle, Rect * monitor, IntPtr param) =>
{
handles.Add(monitorHandle);
return(true);
}
);
if (!NativeMethods.EnumDisplayMonitors(IntPtr.Zero, null, callback, IntPtr.Zero))
{
handles.Clear();
}
return(new ReadOnlyCollection <IntPtr>(handles));
}
public static extern bool EnumDisplayMonitors(HandleRef hdc, NativeMethods.COMRECT rcClip, NativeMethods.MonitorEnumProc lpfnEnum, IntPtr dwData);
public static extern bool EnumDisplayMonitors(IntPtr hdc, IntPtr rcClip, NativeMethods.MonitorEnumProc lpfnEnum, IntPtr dwData);
/// <summary>Returns a read-only collection containing the handle (HMONITOR) of all connected monitors.</summary>
/// <returns>Returns a read-only collection containing the handle (HMONITOR) of all connected monitors.</returns>
unsafe private static ReadOnlyCollection<IntPtr> GetMonitorHandles()
{
var handles = new List<IntPtr>( 1 );
var callback = new NativeMethods.MonitorEnumProc(
( IntPtr hMonitor, IntPtr hDeviceContext, Rect* monitor, IntPtr param ) =>
{
handles.Add( hMonitor );
return true;
}
);
if( !NativeMethods.EnumDisplayMonitors( IntPtr.Zero, null, callback, IntPtr.Zero ) )
handles.Clear();
return new ReadOnlyCollection<IntPtr>( handles );
}