/// <summary>
/// Gets display monitor information.
/// </summary>
/// <returns>Array of display monitor information</returns>
public static async Task <DisplayItem[]> GetDisplayMonitorsAsync()
{
const string deviceInstanceIdKey = "System.Devices.DeviceInstanceId";
try
{
var devices = await DeviceInformation.FindAllAsync(DisplayMonitor.GetDeviceSelector(), new[] { deviceInstanceIdKey });
if (devices?.Any() == true)
{
var items = new List <DisplayItem>(devices.Count);
foreach (var device in devices)
{
if (!device.Properties.TryGetValue(deviceInstanceIdKey, out object value))
{
continue;
}
var deviceInstanceId = value as string;
if (string.IsNullOrWhiteSpace(deviceInstanceId))
{
continue;
}
var displayMonitor = await DisplayMonitor.FromInterfaceIdAsync(device.Id);
//var displayMonitor = await DisplayMonitor.FromIdAsync(deviceInstanceId);
if (displayMonitor is null)
{
continue;
}
//Debug.WriteLine($"DeviceInstanceId: {deviceInstanceId}");
//Debug.WriteLine($"DeviceName: {device.Name}");
//Debug.WriteLine($"DisplayName: {displayMonitor.DisplayName}");
//Debug.WriteLine($"ConnectionKind: {displayMonitor.ConnectionKind}");
//Debug.WriteLine($"PhysicalConnector: {displayMonitor.PhysicalConnector}");
//Debug.WriteLine($"PhysicalSize: {GetDiagonal(displayMonitor.PhysicalSizeInInches):F1}");
items.Add(new DisplayItem(
deviceInstanceId: deviceInstanceId,
displayName: displayMonitor.DisplayName,
isInternal: (displayMonitor.ConnectionKind == DisplayMonitorConnectionKind.Internal),
connectionDescription: GetConnectionDescription(displayMonitor.ConnectionKind, displayMonitor.PhysicalConnector),
physicalSize: GetDiagonal(displayMonitor.PhysicalSizeInInches)));
}
return(items.ToArray());
}
}
catch (ArgumentException ax) when((uint)ax.HResult == ERROR_INVALID_PARAMETER)
{
}
catch (Exception ex) when((uint)ex.HResult == ERROR_GEN_FAILURE)
{
}
return(Array.Empty <DisplayItem>());
}
private static async Task <List <DisplayMonitor> > GetMonitorInfosAsync()
{
var deviceInfos = await DeviceInformation.FindAllAsync(DisplayMonitor.GetDeviceSelector());
List <DisplayMonitor> monitors = new();
foreach (var deviceInfo in deviceInfos)
{
DisplayMonitor monitor = await DisplayMonitor.FromInterfaceIdAsync(deviceInfo.Id);
monitors.Add(monitor);
}
return(monitors);
}
private async Task <DisplayMonitor> GetMonitorInfoAsync()
{
var deviceInfos = await DeviceInformation.FindAllAsync(DisplayMonitor.GetDeviceSelector());
foreach (var deviceInfo in deviceInfos)
{
if (deviceInfo.Id == Id)
{
var monitor = await DisplayMonitor.FromInterfaceIdAsync(deviceInfo.Id);
return(monitor);
}
}
return(null);
}
/// <summary>
/// Gets display monitor information.
/// </summary>
/// <returns>Array of display monitor information</returns>
public static async Task <DisplayItem[]> GetDisplayMonitorsAsync()
{
const string deviceInstanceIdKey = "System.Devices.DeviceInstanceId";
try
{
var devices = await DeviceInformation.FindAllAsync(DisplayMonitor.GetDeviceSelector(), new[] { deviceInstanceIdKey });
if (devices is { Count : > 0 })
{
var items = new List <DisplayItem>(devices.Count);
foreach (var device in devices)
{
if (!device.Properties.TryGetValue(deviceInstanceIdKey, out object value))
{
continue;
}
var deviceInstanceId = value as string;
if (string.IsNullOrWhiteSpace(deviceInstanceId))
{
continue;
}
var displayMonitor = await DisplayMonitor.FromInterfaceIdAsync(device.Id);
//var displayMonitor = await DisplayMonitor.FromIdAsync(deviceInstanceId);
if (displayMonitor is null)
{
continue;
}
//Debug.WriteLine($"DeviceInstanceId: {deviceInstanceId}");
//Debug.WriteLine($"DisplayName: {displayMonitor.DisplayName}");
//Debug.WriteLine($"ConnectionKind: {displayMonitor.ConnectionKind}");
//Debug.WriteLine($"PhysicalConnector: {displayMonitor.PhysicalConnector}");
//Debug.WriteLine($"PhysicalSize: {GetDiagonal(displayMonitor.PhysicalSizeInInches):F1}");
items.Add(new DisplayItem(
deviceInstanceId: deviceInstanceId,
displayName: displayMonitor.DisplayName,
isInternal: (displayMonitor.ConnectionKind == DisplayMonitorConnectionKind.Internal),
connectionDescription: GetConnectionDescription(displayMonitor.ConnectionKind, displayMonitor.PhysicalConnector),
physicalSize: GetDiagonal(displayMonitor.PhysicalSizeInInches)));
}
return(items.ToArray());
}
}
/*
* GET EACH DisplayMonitor OBJECT from the DeviceInformation of the device interface ID,
* then acquire its descriptor (in this case, EDID).
*/
public async void EnumDisplay()
{
for (var index = 0; index < deviceList.Count; index++)
{
if (index != 0)
{
Console.WriteLine();
}
DisplayMonitor display = await DisplayMonitor.FromInterfaceIdAsync(deviceList[index].Id);
byte[] EDID = display.GetDescriptor(DisplayMonitorDescriptorKind.Edid);
string hexBuffer = BitConverter.ToString(EDID).Replace("-", " ").ToLower();
Console.WriteLine(string.Format("{0} : {1}", deviceList[index].Name, deviceList[index].Id));
Console.Write(hexBuffer + "\n");
}
}
private async Task TestAsync()
{
var selector = DisplayMonitor.GetDeviceSelector();
var infos = await DeviceInformation.FindAllAsync(selector);
var monitors = new List <DisplayMonitor>();
foreach (var info in infos)
{
var monitor = await DisplayMonitor.FromInterfaceIdAsync(info.Id);
monitors.Add(monitor);
}
var output = new List <string>();
foreach (var monitor in monitors)
{
output.Add($"RawDpiX: {monitor.RawDpiX} RawDpiY: {monitor.RawDpiY} Width: {monitor.NativeResolutionInRawPixels.Width} Height: {monitor.NativeResolutionInRawPixels.Height}");
}
MainListView.ItemsSource = output;
}
//[SupportedOSPlatform("Windows10.0.17134.0")]
public async void UseDeviceApi()
{
if (OperatingSystem.IsWindowsVersionAtLeast(10, 0, 17134, 0))
{
var deviceInformations = await DeviceInformation.FindAllAsync(DisplayMonitor.GetDeviceSelector());
foreach (DeviceInformation device in deviceInformations)
{
DisplayMonitor displayMonitor = await DisplayMonitor.FromInterfaceIdAsync(device.Id);
// Print some info about the display monitor
var x = "DisplayName: " + displayMonitor.DisplayName;
var y = "ConnectionKind: " + displayMonitor.ConnectionKind;
if (OperatingSystem.IsWindowsVersionAtLeast(10, 0, 19041, 0))
{
var z = "IsDolbyVisionSupported: " + displayMonitor.IsDolbyVisionSupportedInHdrMode;
}
}
}
}
