private static IEnumerable <MonitorDeviceEdidInfoNative> EnumerateMonitorEdidDevicesImpl()
{
var info = new Collection <MonitorDeviceEdidInfoNative>();
var GUID_DEVCLASS_MONITOR = GuidDevClass.GUID_DEVCLASS_MONITOR;
var canContinue = true;
while (canContinue)
{
IntPtr devInfo =
SetupApi.NativeMethods.SetupDiGetClassDevsEx(
ref GUID_DEVCLASS_MONITOR, // class GUID
null, // enumerator
IntPtr.Zero, // HWND
SetupApi.DiGetClassFlags.DIGCF_PRESENT, // Flags
IntPtr.Zero, // device info, create a new one
null, // machine name, local machine
IntPtr.Zero);
if (devInfo == IntPtr.Zero)
{
canContinue = false;
}
if (!canContinue)
{
break;
}
for (uint i = 0; Marshal.GetLastWin32Error() != Win32ErrorCode.ERROR_NO_MORE_ITEMS; i++)
{
SetupApi.SP_DEVINFO_DATA devInfoData = SetupApi.SP_DEVINFO_DATA.Empty;
bool deviceInfoSuccess = SetupApi.NativeMethods.SetupDiEnumDeviceInfo(devInfo, i, ref devInfoData);
if (!deviceInfoSuccess)
{
canContinue = false;
}
if (!canContinue)
{
continue;
}
MonitorDeviceEdidInfoNative candidate = GetMonitorDeviceEdidInfo(devInfo, devInfoData);
var canAdd = candidate.IsValid && candidate != MonitorDeviceEdidInfoNative.NoValid;
if (canAdd)
{
info.Add(candidate);
}
}
}
return(info);
}
/// <summary>
/// Initializes a new instance of the <see cref="MonitorDeviceInfo"/> structure.
/// </summary>
/// <param name="deviceInfo">Monitor information.</param>
/// <param name="edidDeviceInfo">Screen information.</param>
internal MonitorDeviceInfo(MonitorDeviceInfoNative deviceInfo, MonitorDeviceEdidInfoNative edidDeviceInfo)
{
_deviceInfo = deviceInfo;
_edidDeviceInfo = edidDeviceInfo;
}
