private static string FileExtentionInfo(AssocStr assocStr, string doctype)
{
IntPtr pcchOut = IntPtr.Zero;
if (SafeNativeMethods.AssocQueryString(AssocF.Verify, assocStr, doctype, null, null, ref pcchOut) != 1)
{
return(null);
}
StringBuilder pszOut = new StringBuilder((int)pcchOut);
if (SafeNativeMethods.AssocQueryString(AssocF.Verify, assocStr, doctype, null, pszOut, ref pcchOut) != 0)
{
return(null);
}
return(pszOut.ToString());
}
private static ImageSource GetIconInternal(string extension)
{
if (string.IsNullOrEmpty(extension))
{
return(FileIcon);
}
string path;
try
{
path = SafeNativeMethods.AssocQueryString(SafeNativeMethods.AssocStr.DefaultIcon, extension);
}
catch (InvalidOperationException)
{
return(FileIcon);
}
return(SafeNativeMethods.ExtractAssociatedIcon(path));
}
