I just tested in a fully patched digital download version of DKS, from Amazon, for the PC in the USA and these three methods take all loot from a container:

1. Right-click or press the use key (E by default on PC) and click the Take All button.
2. Press the use key twice; once to open the container and once again to take all loot.
3. Right-click twice; once to open the container and once again to take all loot.

I would like to thank Aleroth's recently deceased for allowing me to test this.

Last edited by Endurium; 04/12/10 07:14 PM. Reason: added where I obtained DKS