public static IPreviewHandler InitalizePreviewHandler(FileInfoEx file)
{
IPreviewHandler retVal = null;
PreviewerInfo previewer = getPreviewer(file.FullName);
if (previewer != null)
{
bool isInitialized = false;
Type a = Type.GetTypeFromCLSID(previewer.CLSID, true);
object o = Activator.CreateInstance(a);
IInitializeWithFile fileInit = o as IInitializeWithFile;
IInitializeWithStream streamInit = o as IInitializeWithStream;
if (fileInit != null)
{
fileInit.Initialize(file.FullName, 0);
isInitialized = true;
}
else if (streamInit != null)
{
FileStreamEx stream = file.OpenRead();
streamInit.Initialize((IStream)stream, 0);
isInitialized = true;
}
if (isInitialized)
{
retVal = o as IPreviewHandler;
}
}
return(retVal);
}
static void loadPreviewerList()
{
List <PreviewerInfo> previewerList = new List <PreviewerInfo>();
using (RegistryKey rk =
Registry.LocalMachine.OpenSubKey(@"SOFTWARE\Microsoft\Windows\CurrentVersion\PreviewHandlers"))
{
if (rk != null)
{
string[] guids = rk.GetValueNames();
for (int i = 0; i < guids.Length; i++)
{
bool repeated = false;
foreach (PreviewerInfo curPrv in previewerList)
{
if (curPrv.CLSID.ToString() == guids[i])
{
repeated = true;
}
}
if (repeated)
{
break;
}
PreviewerInfo prv = new PreviewerInfo();
prv.CLSID = new Guid(guids[i]);
prv.Title = rk.GetValue(guids[i]).ToString();
previewerList.Add(prv);
}
}
}
CurrentPreviewers = new List <PreviewerInfo>(previewerList);
}
static void loadPreviewerList()
{
List<PreviewerInfo> previewerList = new List<PreviewerInfo>();
using (RegistryKey rk =
Registry.LocalMachine.OpenSubKey(@"SOFTWARE\Microsoft\Windows\CurrentVersion\PreviewHandlers"))
{
if (rk != null)
{
string[] guids = rk.GetValueNames();
for (int i = 0; i < guids.Length; i++)
{
bool repeated = false;
foreach (PreviewerInfo curPrv in previewerList)
if (curPrv.CLSID.ToString() == guids[i])
repeated = true;
if (repeated)
break;
PreviewerInfo prv = new PreviewerInfo();
prv.CLSID = new Guid(guids[i]);
prv.Title = rk.GetValue(guids[i]).ToString();
previewerList.Add(prv);
}
}
}
CurrentPreviewers = new List<PreviewerInfo>(previewerList);
}