public HRESULT GetThumbnailByID(WTS_THUMBNAILID thumbnailID, uint cxyRequestedThumbSize, ISharedBitmap **ppvThumb, WTS_CACHEFLAGS *pOutFlags)
{
return(((delegate * unmanaged <IThumbnailCache *, WTS_THUMBNAILID, uint, ISharedBitmap **, WTS_CACHEFLAGS *, int>)(lpVtbl[4]))((IThumbnailCache *)Unsafe.AsPointer(ref this), thumbnailID, cxyRequestedThumbSize, ppvThumb, pOutFlags));
}
private static ImageData LoadThumbnail(string path, DateTime dtLastWriteTime, out Size sizeRaw, out Size sizeActual, out string toolTipText, out bool fCached)
{
sizeRaw = sizeActual = Size.Empty;
toolTipText = null;
fCached = false;
IntPtr zero = IntPtr.Zero;
IShellItem ppsi = null;
ISharedBitmap ppvThumb = null;
LocalThumbnailCache o = null;
try {
zero = PInvoke.ILCreateFromPath(path);
if ((zero != IntPtr.Zero) && (PInvoke.SHCreateShellItem(IntPtr.Zero, null, zero, out ppsi) == 0))
{
o = new LocalThumbnailCache();
IThumbnailCache cache2 = (IThumbnailCache)o;
uint flags = 0;
uint pOutFlags = 0;
WTS_THUMBNAILID pThumbnailID = new WTS_THUMBNAILID();
uint cxyRequestedThumbSize = (uint)Math.Min(0x400, Math.Min(QTUtility.PreviewMaxWidth, QTUtility.PreviewMaxHeight));
if (cache2.GetThumbnail(ppsi, cxyRequestedThumbSize, flags, out ppvThumb, ref pOutFlags, ref pThumbnailID) == 0)
{
IntPtr ptr2;
if ((pOutFlags & 2) == 2)
{
fCached = true;
}
if (ppvThumb.Detach(out ptr2) == 0)
{
Bitmap bmp = Image.FromHbitmap(ptr2);
Size size = bmp.Size;
sizeRaw = sizeActual = size;
ImageData data = new ImageData(bmp, null, path, dtLastWriteTime, size, size);
data.Thumbnail = true;
try {
toolTipText = data.TooltipText = ShellMethods.GetShellInfoTipText(zero, false);
}
catch {
}
return(data);
}
}
}
}
catch (Exception exception) {
QTUtility2.MakeErrorLog(exception, null);
}
finally {
if (zero != IntPtr.Zero)
{
PInvoke.CoTaskMemFree(zero);
}
if (ppsi != null)
{
Marshal.ReleaseComObject(ppsi);
}
if (ppvThumb != null)
{
Marshal.ReleaseComObject(ppvThumb);
}
if (o != null)
{
Marshal.ReleaseComObject(o);
}
}
return(null);
}
