Easier to pay for it than to go to all this damn trouble.. hell I could dig a ditch and make enough money to buy it in the time it takes to get this free version .

How can I add support for 7z archives to my application?

One way is to use the 7za.dll (available from sf.net for download). The 7za.dll works via COM interfaces. It, however, doesn't use standard COM interfaces for creating objects. You can find a small example in the source code. A full example is 7-Zip itself, since 7-Zip works via this dll also. There are other applications that use 7za.dll such as WinRAR, PowerArchiver and others.

The other way is to call the command line version: 7za.exe.

Also, according to this page you can use 7zip without royalty, however, if you modify the 7zip dll source, you have to make the source available to the public. Many applications are using 7za.dll (provided freely by 7zip) and arent paying a royalty. Winrar can add 7zip creation if they wanted without royalty.

I got the reg page & got a mail with as app says confusing directions\lack of same
and a link for the download which doesnt work today sofar,
AND it doesnt say if the download-link is good after today...

(says i get two attempts at downloading, be lucky if i get any at this rate )

The same happened to me so I did a search on Winrar 3.51...Downloaded the apps and put the reg in and it registered without any problems

Good to hear it...

I have to agree with db90h on the state of the LZMA source - it's frigging ugly, some of the worst I've seen in a long time. I took a five-minute look at it and decided that I had better things to do than utilizing LZMA compression. The GPL license sucks, and so does the majority of code released under it.

I also agree WinRAR is king - it's got a nice, clean interface, doesn't try to do a lot of weird things, etc. It has UnRar for a lot of platforms, supports all important things on NT (security info, alternate data streams), has extremely good command-line support etc.

Quote

One way is to use the 7za.dll (available from sf.net for download). The 7za.dll works via COM interfaces. It, however, doesn't use standard COM interfaces for creating objects.

Now how bloody stupid is THAT?

For those of you that have taken advantage of this offer, you can't use the instructions in the email they sent you, once you have that key.

It says to double click the key file but that will result in this error:

There's many apps (all protected by asprotect, iirc?) that decide to associate themselves with the *.key file extension - pretty lame.

I have to agree with db90h on the state of the LZMA source - it's frigging ugly, some of the worst I've seen in a long time. I took a five-minute look at it and decided that I had better things to do than utilizing LZMA compression. The GPL license sucks, and so does the majority of code released under it.

And if you think the LZMA code is messy, take a look at 7-zip ;p. And, yep, he uses COM style interfaces (pure virtual base classes), but not the COM standard itself. It would be trivial to expose it as a proper COM object, why he doesn't who knows.

If you're on Usenet daily, then WinRAR is the only choice. Squeez also creates RAR files, but the RAR format remains proprietary. And by the way, not only is Squeez slick, it can do just about everything you'll ever want from an archiver... for a price. I also like the 7z format, but the 7-Zip archiver app has not improved its usability for several years, and that's aggravating.

There's another link to get a free WinRAR 3.51 license (non-upgradeable).  This site does not seem to be as bogged down as Sunday's:

http://nct.digitalriver.com/fulfill/0233.001

I have no idea how long it will stay valid.

Thanks for this, got my free license     

I thought the key would be the same for every one... I never bothered to check tho.
As for posting this here.. I don't think it's a good idea. They specifically set a time zone for license
downloads.. and now it's over. I think you should respect the authors way of business if you know
what I mean. Any way, that's what I think - you should atleast complete the sign up info for the free
key, that's the msg I was tryna deliver.. you can unsub any time from your sign up.