4 replies to this topic

[gregwarner]

I was curious to know if anybody has ever found an elegant way to call functions in a Windows COM DLL from Java.

I'm needing my program to acquire images from WIA (Windows Image Acquisition) compatible scanners and cameras. (Our scanners are not TWAIN compatible.) The WIA Automation COM object is located in C:\Windows\System32\wiaaut.dll and provides functions for discovering the connected WIA devices and acquiring images.

I've searched and only managed to come up with some commercial packages that add this functionality to Java, but I can't spend money on this task. :) Anyone have a better way to do it? (If I can avoid having to write a wrapper program in C/C++, I'd like that.)

[wim DC]

com4j maybe?

[gregwarner]

Hmm, when I try to download com4j, I get the following message:
The file /web/projects/com4j/servlets/ProjectDocumentList appears to be missing.

[wim DC]

Good point...

Edit: Subversion for source seems to work tho, maybe you can compile it yourself :p

Edit2: wonder what this is Com4j: Downloads — Java.net

Edit3: the above link works (downloaded the smallest rar, as it's the newest I think) It also contains samples.

[gregwarner]

Excellent. Thank you. I'll give it a try.