///// <summary></summary>
///// <param name="identifier"></param>
///// <returns></returns>
//public static DisplayAdapter GetAdapter( DisplayDeviceId identifier )
//{
// foreach( var adapter in adaptersByDeviceName.Values )
// {
// if( adapter.Identifier.Equals( identifier ) )
// return adapter;
// }
// return null;
//}
#endregion Display adapters
#region Display monitors
///// <summary></summary>
///// <param name="identifier"></param>
///// <returns></returns>
//public static DisplayMonitor GetMonitor( DisplayDeviceId identifier )
//{
// foreach( var adapter in adaptersByDeviceName.Values )
// {
// foreach( var monitor in adapter.Monitors )
// {
// if( monitor.identifier.Equals( identifier ) )
// return monitor;
// }
// }
// return null;
//}
/// <summary>Returns a monitor given its handle (HMONITOR).</summary>
/// <param name="monitorHandle">The monitor handle.</param>
/// <returns>Returns the monitor associated with the specified handle, or null.</returns>
public static DisplayMonitor GetMonitorByHandle(IntPtr monitorHandle)
{
if (!isInitialized)
{
Update();
}
var monitorInfo = DisplayMonitor.GetInfo(monitorHandle);
if (adaptersByDeviceName.TryGetValue(monitorInfo.AdapterDeviceName, out DisplayAdapter adapter))
{
return(adapter.GetMonitorByHandle(monitorHandle));
}
return(null);
}
/// <summary>Raises the <see cref="MonitorConnected"/> or <see cref="MonitorDisconnected"/> event.</summary>
/// <param name="monitor">The device name of the display monitor of interest.</param>
/// <param name="connected">True to raise the <see cref="MonitorConnected"/> event, false to raise the <see cref="MonitorDisconnected"/> event.</param>
private void OnMonitorConnectedOrDisconnected(DisplayMonitor monitor, bool connected)
{
(connected ? this.MonitorConnected : this.MonitorDisconnected)?.Invoke(this, new DisplayAdapterEventArgs(monitor));
}
private void RefreshMonitorList()
{
var deviceName = base.DeviceName;
var allHandles = GetMonitorHandles();
var handles = new List <IntPtr>();
var hMax = allHandles.Count;
int h;
for (h = 0; h < hMax; ++h)
{
var info = DisplayMonitor.GetInfo(allHandles[h]);
if (deviceName.Equals(info.AdapterDeviceName, StringComparison.Ordinal))
{
handles.Add(allHandles[h]);
}
}
var removedMonitors = new List <string>(monitorsByDeviceName.Keys);
var addedMonitors = new List <DisplayMonitor>();
var primaryMonitorChanged = false;
var monitors = EnumDisplayDevices(deviceName, true);
DisplayMonitor displayMonitor;
h = 0;
for (var m = 0; m < monitors.Count; ++m)
{
var monitor = monitors[m];
var handle = IntPtr.Zero;
if ((monitor.State & (int)DisplayMonitorStateIndicators.Active) != 0 && (h < handles.Count))
{
handle = handles[h]; // FIXME - this is not the right handle when topology is Clone !
++h;
}
if (monitorsByDeviceName.TryGetValue(monitor.DeviceName, out displayMonitor))
{
displayMonitor.Refresh(ref monitor);
displayMonitor.Handle = handle;
removedMonitors.Remove(monitor.DeviceName);
}
else
{
displayMonitor = new DisplayMonitor(this, monitor, handle);
monitorsByDeviceName.Add(monitor.DeviceName, displayMonitor);
addedMonitors.Add(displayMonitor);
}
if (displayMonitor.IsPrimary && (primaryDisplayMonitor != displayMonitor))
{
primaryMonitorChanged = (primaryDisplayMonitor != null);
primaryDisplayMonitor = displayMonitor;
}
}
while (addedMonitors.Count > 0)
{
this.OnMonitorConnectedOrDisconnected(addedMonitors[0], true);
addedMonitors.RemoveAt(0);
}
while (removedMonitors.Count > 0)
{
deviceName = removedMonitors[0];
removedMonitors.RemoveAt(0);
displayMonitor = monitorsByDeviceName[deviceName];
monitorsByDeviceName.Remove(deviceName);
displayMonitor.OnDisconnected();
this.OnMonitorConnectedOrDisconnected(displayMonitor, false);
}
if (primaryMonitorChanged)
{
PrimaryMonitorChanged?.Invoke(this, EventArgs.Empty);
}
}
/// <summary>Returns the <see cref="DisplayMonitor"/> which has the largest area of intersection with the bounding rectangle of a window.</summary>
/// <param name="windowHandle">A window handle.</param>
/// <returns>Returns the <see cref="DisplayMonitor"/> which has the largest area of intersection with the bounding rectangle of a window.</returns>
public static DisplayMonitor GetMonitorFromWindowHandle(IntPtr windowHandle)
{
return(GetMonitorByHandle(DisplayMonitor.GetMonitorHandleFromWindow(windowHandle)));
}
private void RefreshMonitors()
{
var deviceName = base.DeviceIdentifier;
var allHandles = GetMonitorHandles();
var handles = new List<IntPtr>();
int h;
for( h = 0; h < allHandles.Count; ++h )
{
var info = DisplayMonitor.GetMonitorInfo( allHandles[ h ] );
if( deviceName.Equals( info.AdapterDeviceName, StringComparison.Ordinal ) )
handles.Add( allHandles[ h ] );
}
var removedMonitors = new List<string>( monitorsByDeviceName.Keys );
var addedMonitors = new List<string>();
var primaryMonitorChanged = false;
DisplayMonitor displayMonitor;
var monitors = EnumDisplayDevices( deviceName, true );
h = 0;
for( var m = 0; m < monitors.Count; ++m )
{
var monitor = monitors[ m ];
IntPtr handle;
if( ( monitor.State & (int)MonitorStateIndicators.Active ) == (int)MonitorStateIndicators.Active && ( h < handles.Count ) )
{
handle = handles[ h ]; // FIXME - this is not the right handle when topology is Clone !
++h;
}
else
handle = IntPtr.Zero;
if( monitorsByDeviceName.TryGetValue( monitor.DeviceName, out displayMonitor ) )
{
displayMonitor.Refresh( monitor );
displayMonitor.Handle = handle;
removedMonitors.Remove( monitor.DeviceName );
}
else
{
displayMonitor = new DisplayMonitor( monitor, handle );
monitorsByDeviceName.Add( monitor.DeviceName, displayMonitor );
addedMonitors.Add( monitor.DeviceName );
}
if( displayMonitor.IsPrimary && ( primaryDisplayMonitor != displayMonitor ) )
{
primaryMonitorChanged = ( primaryDisplayMonitor != null );
primaryDisplayMonitor = displayMonitor;
}
}
while( addedMonitors.Count > 0 )
{
this.OnMonitorConnectedOrDisconnected( addedMonitors[ 0 ], true );
addedMonitors.RemoveAt( 0 );
}
while( removedMonitors.Count > 0 )
{
deviceName = removedMonitors[ 0 ];
removedMonitors.RemoveAt( 0 );
displayMonitor = monitorsByDeviceName[ deviceName ];
monitorsByDeviceName.Remove( deviceName );
displayMonitor.OnDisconnected();
this.OnMonitorConnectedOrDisconnected( deviceName, false );
}
if( primaryMonitorChanged )
{
var primaryMonitorChangedEvent = PrimaryMonitorChanged;
if( primaryMonitorChangedEvent != null )
primaryMonitorChangedEvent.Invoke( this, EventArgs.Empty );
}
}
internal DisplayAdapterEventArgs(DisplayMonitor monitor)
{
this.monitor = monitor;
}
