private static List <QueryMonitorInfo> GetQueryDisplayMonitorInfo()
{
List <QueryMonitorInfo> monitors = new List <QueryMonitorInfo>();
int error = GetDisplayConfigBufferSizes(QUERY_DEVICE_CONFIG_FLAGS.QDC_ONLY_ACTIVE_PATHS,
out uint pathCount, out uint modeCount);
if (error != ERROR_SUCCESS)
{
throw new Win32Exception(error);
}
DISPLAYCONFIG_PATH_INFO[] displayPaths = new DISPLAYCONFIG_PATH_INFO[pathCount];
DISPLAYCONFIG_MODE_INFO[] displayModes = new DISPLAYCONFIG_MODE_INFO[modeCount];
error = QueryDisplayConfig(QUERY_DEVICE_CONFIG_FLAGS.QDC_ONLY_ACTIVE_PATHS,
ref pathCount, displayPaths, ref modeCount, displayModes, IntPtr.Zero);
if (error != ERROR_SUCCESS)
{
throw new Win32Exception(error);
}
Logger.Instance.LogMessage(TracingLevel.INFO, $"QueryDisplay returned {pathCount} paths and {modeCount} modes");
QueryMonitorInfo currMonitor = new QueryMonitorInfo();
for (int idx = 0; idx < modeCount; idx++)
{
if (idx % 2 == 0)
{
currMonitor = new QueryMonitorInfo
{
AdapterId = displayModes[idx].adapterId,
Id = displayModes[idx].id
};
}
else
{
if (currMonitor.AdapterId.HighPart != displayModes[idx].adapterId.HighPart || currMonitor.AdapterId.LowPart != displayModes[idx].adapterId.LowPart)
{
throw new Exception("Inconsistent Adapter Id");
}
}
if (displayModes[idx].infoType == DISPLAYCONFIG_MODE_INFO_TYPE.DISPLAYCONFIG_MODE_INFO_TYPE_TARGET)
{
currMonitor.UserFriendlyName = MonitorFriendlyName(displayModes[idx].adapterId, displayModes[idx].id);
currMonitor.DevicePath = MonitorDevicePath(displayModes[idx].adapterId, displayModes[idx].id);
}
else if (displayModes[idx].infoType == DISPLAYCONFIG_MODE_INFO_TYPE.DISPLAYCONFIG_MODE_INFO_TYPE_SOURCE)
{
currMonitor.DisplayName = GDI(displayModes[idx].adapterId, displayModes[idx].id);
}
if (idx % 2 != 0)
{
monitors.Add(currMonitor);
}
}
Logger.Instance.LogMessage(TracingLevel.INFO, $"QueryDisplay returned {monitors.Count} monitors");
return(monitors);
}
public MonitorInfo(WMIMonitorInfo wmiInfo, QueryMonitorInfo queryInfo)
{
WMIInfo = wmiInfo;
QueryInfo = queryInfo;
if (WMIInfo != null && QueryInfo != null)
{
UniqueValue = $"{WMIInfo?.UserFriendlyName}{Constants.UNIQUE_VALUE_DELIMITER}{WMIInfo?.SerialNumber}{Constants.UNIQUE_VALUE_DELIMITER}{WMIInfo.InstanceName}";
DeviceName = QueryInfo?.DisplayName;
FriendlyName = WMIInfo?.UserFriendlyName;
DisplayName = FriendlyName;
}
}
