internal static bool IsFeatureDisabled(KeyToRead key)
{
string regValue = null;
bool fResult = false;
switch (key)
{
case KeyToRead.WebBrowserDisable:
regValue = RegistryKeys.value_WebBrowserDisallow;
break;
case KeyToRead.MediaAudioDisable:
regValue = RegistryKeys.value_MediaAudioDisallow;
break;
case KeyToRead.MediaVideoDisable:
regValue = RegistryKeys.value_MediaVideoDisallow;
break;
case KeyToRead.MediaImageDisable:
regValue = RegistryKeys.value_MediaImageDisallow;
break;
case KeyToRead.MediaAudioOrVideoDisable:
regValue = RegistryKeys.value_MediaAudioDisallow;
break;
case KeyToRead.ScriptInteropDisable:
regValue = RegistryKeys.value_ScriptInteropDisallow;
break;
default: // throw exception for invalid key
throw(new System.ArgumentException(key.ToString()));
}
RegistryKey featureKey;
//Assert for read access to HKLM\Software\Microsoft\Windows\Avalon
RegistryPermission regPerm = new RegistryPermission(RegistryPermissionAccess.Read, "HKEY_LOCAL_MACHINE\\" + RegistryKeys.WPF_Features); //BlessedAssert
regPerm.Assert(); //BlessedAssert
try
{
object obj = null;
bool keyValue = false;
// open the key and read the value
featureKey = Registry.LocalMachine.OpenSubKey(RegistryKeys.WPF_Features);
if (featureKey != null)
{
// If key exists and value is 1 return true else false
obj = featureKey.GetValue(regValue);
keyValue = obj is int && ((int)obj == 1);
if (keyValue)
{
fResult = true;
}
// special case for audio and video since they can be orred
// this is in the condition that audio is enabled since that is
// the path that MediaAudioVideoDisable defaults to
// This is purely to optimize perf on the number of calls to assert
// in the media or audio scenario.
if ((fResult == false) && (key == KeyToRead.MediaAudioOrVideoDisable))
{
regValue = RegistryKeys.value_MediaVideoDisallow;
// If key exists and value is 1 return true else false
obj = featureKey.GetValue(regValue);
keyValue = obj is int && ((int)obj == 1);
if (keyValue)
{
fResult = true;
}
}
}
}
finally
{
RegistryPermission.RevertAssert();
}
return(fResult);
}
internal static bool IsFeatureDisabled(KeyToRead key)
{
string regValue = null;
bool fResult = false;
switch (key)
{
case KeyToRead.WebBrowserDisable:
regValue = RegistryKeys.value_WebBrowserDisallow;
break;
case KeyToRead.MediaAudioDisable:
regValue = RegistryKeys.value_MediaAudioDisallow;
break;
case KeyToRead.MediaVideoDisable:
regValue = RegistryKeys.value_MediaVideoDisallow;
break;
case KeyToRead.MediaImageDisable:
regValue = RegistryKeys.value_MediaImageDisallow;
break;
case KeyToRead.MediaAudioOrVideoDisable:
regValue = RegistryKeys.value_MediaAudioDisallow;
break;
case KeyToRead.ScriptInteropDisable:
regValue = RegistryKeys.value_ScriptInteropDisallow;
break;
default:// throw exception for invalid key
throw(new System.ArgumentException(key.ToString()));
}
RegistryKey featureKey;
//Assert for read access to HKLM\Software\Microsoft\Windows\Avalon
RegistryPermission regPerm = new RegistryPermission(RegistryPermissionAccess.Read,"HKEY_LOCAL_MACHINE\\"+RegistryKeys.WPF_Features);//BlessedAssert
regPerm.Assert();//BlessedAssert
try
{
object obj = null;
bool keyValue = false;
// open the key and read the value
featureKey = Registry.LocalMachine.OpenSubKey(RegistryKeys.WPF_Features);
if (featureKey != null)
{
// If key exists and value is 1 return true else false
obj = featureKey.GetValue(regValue);
keyValue = obj is int && ((int)obj == 1);
if (keyValue)
{
fResult = true;
}
// special case for audio and video since they can be orred
// this is in the condition that audio is enabled since that is
// the path that MediaAudioVideoDisable defaults to
// This is purely to optimize perf on the number of calls to assert
// in the media or audio scenario.
if ((fResult == false) && (key == KeyToRead.MediaAudioOrVideoDisable))
{
regValue = RegistryKeys.value_MediaVideoDisallow;
// If key exists and value is 1 return true else false
obj = featureKey.GetValue(regValue);
keyValue = obj is int && ((int)obj == 1);
if (keyValue)
{
fResult = true;
}
}
}
}
finally
{
RegistryPermission.RevertAssert();
}
return fResult;
}
