Hi, I have an application that posts tweets automatically from PowerPoint each time a presenter gets to a particular slide:
It's a relatively simple VBA script that uses basic authentication (until tomorrow, when it gets turned off!) . Because it's a full- client application, I requested, and obtained, the ability to use xAuth. But I've struggled to find an easy way to use xAuth / Oauth from VBA. I'm not even sure it's possible at all using only VBA -- specifically, I haven't found any "native VBA" HMAC-SHA1 code, and lack the skills to write one (I found this post on SHA1 in VBA, but don't know how to include the key / HMAC part -- anybody know?: http://splinter.com.au/blog/?p=86). As a workaround, I tried adding a DLL to do the HMAC-SHA1 part, based on this post: http://blog.gobansaor.com/2008/02/22/xlaws-excel-vba-code-for-accessing-amazons-s3-and-simpledb/, and haven't completely given up, but my attempts so far don't seem to generate the right signature (i.e. when I cut and paste the available xAuth demo code from twitter, I get a different result than they do). I also started checking out the HMAC-SHA1 library from http://www.cryptosys.net/#api, but my application is freeware, so trying to avoid commercial code... And I know there are .Net VB libraries like TwitterVB http://twittervb.codeplex.com/, but I don't know how to access those methods/properties from VBA -- is it possible? Could somebody point me to demo code that shows how to use something like that from VBA? Many, many thanks in advance to anybody who can help my application from dying tomorrow!... -- Twitter developer documentation and resources: http://dev.twitter.com/doc API updates via Twitter: http://twitter.com/twitterapi Issues/Enhancements Tracker: http://code.google.com/p/twitter-api/issues/list Change your membership to this group: http://groups.google.com/group/twitter-development-talk?hl=en
